Electronic Product Selection Guide

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FORM NO. EC102-A © 2002, Littelfuse Inc. Printed in U.S.A. Electronic Product Specifications, descriptions and illustrative material in this literature are as accurate as known at the time of publication, but are subject to change without notice. Selection Guide TABLE OF CONTENTS

Description Page Number Introduction ...... 1 Table of Contents ...... 2 Overcurrent Facts Fuse Facts ...... 3-6 PTC Facts ...... 6-7 Overcurrent Selection Guide ...... 8 Resettable PTCs Surface Mount: 1206L Series, 1812L Series and 3425L Series ...... 9 Radial Leaded: 30R Series ...... 9 60R Series ...... 9 Surface Mount Fuses SlimLineª 435, 433 and 434 Series Very Fast-Acting Fuses ...... 9-10 NEW SlimLineª 466 and 467 Series Lead-Free Fuses ...... 9 429 and 431 Series Very Fast-Acting Fuses ...... 9-10 430 Series Slo-Blo¨ Fuses ...... 9 461 Series Telecom Nano2¨ Fuses ...... 10 Nano2¨ (Very Fast-Acting, UMF and Slo-Blo¨ Fuses) ...... 10 446/447 Series, 350V EBF Fuse ...... 10 PICO¨ SMF (Very Fast-Acting and Slo-Blo¨ Fuses) ...... 11 FLAT-PAK¨ (Very Fast-Acting and Slo-Blo¨ Fuses) ...... 11 Axial Lead and PICO¨ II (250V Very Fast-Acting, Very Fast-Acting, Time Lag and Slo-Blo¨ Fuses) ...... 11 Cartridge Fuses MICRO Very Fast-Acting Fuse ...... 12 2AG (Fast-Acting, 350V and Surge Withstand Slo-Blo¨ Fuses) ...... 11 3AG (Fast-Acting and Slo-Blo¨ Fuse) ...... 12 3AB (Fast-Acting, Slo-Blo¨ and Special Very-Fast Acting Type Fuses) ...... 12 High Reliability (PICO¨ Very Fast-Acting and MICRO Very Fast-Acting Fuses) ...... 12 5x20mm (Fast-Acting, Medium-Acting and Slo-Blo¨ Fuses) ...... 12-13 SFE (Fast-Acting Fuse) ...... 13 At Littelfuse, we focus on what we do Protecting Circuits from • Littelfuse circuit protection products meet LT-5 ª (Fast-Acting, Time Lag and Time Lag Extended Breaking Capacity) Fuses ...... 13 best — developing and manufacturing or exceed all applicable industry and Midget (Fast-Acting, Slo-Blo¨ and Indicating Fuses) ...... 14 devices that protect electronic circuits and Excessive Current and Voltage government standards, so you benefit Midget (Increased Time-Delay and Multimeter Protection) ...... 14 ª applications from harm caused by overcurrent Littelfuse provides both overcurrent and from our uncompromising approach to Hazardous Area Fuses (Barrier Network and SAFE-T-Plus Fuse) ...... 15 Blade Terminal Fuses (ATO¨, MINI¨, MAXI, MEGA¨, MIDI¨ and Alarm Indicating Fuses) . . .15-16 and overvoltage events. It's this focus that overvoltage circuit protection products: quality and reliability. has enabled us to consistently lead the • Industry leading, application-specific Fuseholders Fuseholders (For Alarm Indicating Fuse) ...... 16 industry in innovative, high-quality circuit • Our overcurrent line of products includes solutions provide you with assurance that Fuseholders (For 3AG, 5x20mm, Midget, Micro, PICO¨ II and SFE Fuses) ...... 16-17 protection technologies. Something we've fuses and resettable PTCs which protect your most demanding requirements will Fuseholders (For LT-5, ATO¨ and MINI¨ Fuses) ...... 17-18 been doing for over 75 years. electrical circuits and devices when be met. Fuse Blocks and Clips Fuse Blocks and Clips (NANO2, 2AG, 5x20, 3AG and Midget Fuses) ...... 18 current exceeds a predetermined value. • Our Technical Solutions Group (TSG) is Overvoltage Suppression Facts Overview ...... 19-23 Open the cover on nearly any electronic • Our overvoltage line of products includes dedicated to providing customer-focused, Overvoltage Application Guide ...... 24 device you can think of and inside you'll find electrostatic discharge (ESD) suppressors, application-specific technical support Overvoltage Suppression Selection Guides (5) ...... 25-26 a Littelfuse product. Computers, cell phones, SiBOD™ thyristors, gas plasma services for Littelfuse customers around Polymeric ESD Suppressors Surface Mount PulseGuard¨ ESD Suppressors ...... 27 telecommunications equipment, televisions, protectors/GDTs, silicon avalanche diodes the world. appliances, automotive components — all (SADs) and metal oxide varistors Surface Mount Varistors Multilayer Varistors (ML, MLE, MHS, AUML and MLN Series) ...... 27 these and many more are safeguarded by (MOVs) which provide a resistive shield Littelfuse offers innovative solutions, based CH Series Metal Oxide Varistor ...... 29 Littelfuse technology. against transient voltage surges. on extensive research and development, Silicon Protection TVS/Diode Arrays (SP05x, SP72x Series) ...... 27 and an uncompromising approach to NEW SiBODª Thyristors ...... 27-28 Today, we offer the broadest line of circuit quality. We continue to enhance our NEW TVS Diodes/Silicon Avalanche Diodes (SADs) ...... 28 protection products in the world for both Why Littelfuse? products and manufacturing processes to Gas Plasma OVP/GDTs NEW Gas Plasma OVP ...... 28 overcurrent and overvoltage applications. When you choose Littelfuse as your stay on the leading edge of technology and ª ª As the leading global provider of circuit Industrial and Axial MOVs Radial Leaded MOVs (UltraMOV , C-III, LA, ZA, RA and TMOV Varistors) ...... 29 supplier of circuit protection solutions, you meet today's ever-increasing compliance Axial MOVs (MA Series MOVs) ...... 29 protection devices for the automotive gain from a full range of important benefits: and reliability standards. Industrial MOVs (CA, NA, PA, HA, HB34, DA and DB Series varistors) ...... 29 industry and the third largest producer of Index ...... 30 power fuses in North America, we deliver • A broad selection of products and We hope this publication will provide the the innovation, expertise, quality, capacity technologies from a single source means information you need to make the right and service you would expect from an optimal solutions and fewer compromises. choices in circuit protection products. If you industry leader. Our wide range of choices minimizes the have any questions about our products, feel need to approximate or trade off. free to call us at: 847.824.1188.

1 2 TABLE OF CONTENTS

1 2 FUSE FACTS The following Fuse Facts section will In the absence of special requirements, expressed as 100% of rating.The circuit The fuse sizes in the chart below began acting, or Slo-Blo® fuses.The distinguishing cannot be selected solely on the basis of provide a better understanding of both Littelfuse reserves the right to make design engineer should clearly understand with the early "Automobile Glass" fuses, feature of Slo-Blo® fuses is their additional normal operating current and ambient fuses and common applications.The fuses appropriate changes in design, process, that the purpose of these controlled test hence the term "AG".The numbers thermal inertia and their ability to tolerate temperature. described are current-sensitive devices and manufacturing location without notice. conditions is to enable fuse manufacturers were applied chronologically as different normal initial or start-up overload pulses. that serve as an intentional weak link in to maintain unified performance standards manufacturers started making a new size. For example, one prevalent cause of an electrical circuit and provide protection Ambient Temperature for their products, and must account for the For example, "3AG" was the third size Fuse Construction nuisance opening in conventional power against overheating by reliably melting variable conditions of the specific application. placed on the market. The temperature of the air immediately Internal fuse construction may vary depending supplies is the failure to adequately under current-overload conditions. 2 surrounding the fuse. Not to be confused on ampere rating. Fuse photos in this catalog consider the fuse's nominal melting I t They can be used to protect discrete 2 with "room temperature." The fuse To compensate for these variables, the Other non-glass fuse sizes and show typical construction of a particular rating. In such an application, the fuse's I t components or complete circuits. ambient temperature is appreciably higher circuit design engineer who is designing constructions were determined by ampere rating within the fuse series. rating must also meet the inrush current in many cases, because it is enclosed (as for trouble-free, long-life fuse protection, functional requirements, but they still requirements created by the input capacitor Although this guide provides technical generally loads the fuse no more than retained the length or diameter dimensions of the power supply's smoothing filter. information that will help you design in a panel mount fuseholder) or mounted Fuseholders near other heat producing components, 75% of the nominal rating listed by the of the glass fuses.Their designation was The procedure for converting various your circuit protection application, such In many applications, fuses are installed 2 such as resistors, transformers, etc. manufacturer, keeping in mind that modified to AB in place of AG, indicating waveforms into I t circuit demand is as product data and design guidelines, it is overload and short circuit protection that the outer tube was constructed from in fuseholders.These fuses and their given in the FUSE SELECTION GUIDE. not intended to be comprehensive.Testing associated fuseholders are not intended Breaking Capacity must be adequately provided for. Bakelite, fibre, ceramic, or a similar material is strongly recommended and should be other than glass.The largest size fuse for operation as a "switch" for turning For trouble-free, long-life fuse protection, conducted to verify application performance. See Interrupting Rating. The fuses under discussion are shown in the chart is the 5AG, or power "on" and "off". it is good design practice to select a fuse temperature-sensitive devices whose "MIDGET", a name adopted from its use for which the I2t of the waveform is no The following fuse parameters and Current Rating ratings have been established in a 25°C by the electrical industry and the National Interrupting Rating more than 20% of the nominal melting I2t application concepts should be well The nominal amperage value of the fuse. ambient.The fuse temperature generated Electrical Code range which normally Also known as breaking capacity or rating of the fuse. Refer to the section on understood in order to properly select It is established by the manufacturer as by current passing through the fuse, recognizes fuses of 9/16" x 2" as the short circuit rating, the interrupting rating PULSES in the FUSE SELECTION GUIDE. a fuse for a given application. a value of the current the fuse can carry, increases or decreases with ambient smallest standard fuse in use. is the maximum approved current which based on a controlled set of test conditions. temperature change.The ambient the fuse can safely interrupt at its rated Resistance temperature chart on page 7 illustrates FUSE SIZES (See RERATING). voltage. During a fault or short circuit The resistance of a fuse is usually an the effect that ambient temperature has Length Diameter/Width condition, a fuse may receive an insignificant part of the total circuit on the nominal current rating of a fuse. Size mm in mm in Most catalog fuse part numbers include instantaneous overload current many resistance. Since the resistance of fractional series identification and amperage ratings. 0402 1.04 .041 .51 .020 times greater than its normal operating amperage fuses can be several ohms, this ® 0603 1.60 .063 .813 .032 Refer to the OVERCURRENT SELECTION Slo-Blo Thin-Film fuse designs, which current. Safe operation requires that the fact should be considered when using use lower melting temperature 1206 3.18 .125 1.52 .060 GUIDE section for guidance on making 1AG 15.875 .625 6.35 .250 fuse remain intact (no explosion or them in low-voltage circuits. Actual values the proper choice. materials, are more sensitive to ambient 2AG 14.48 .57 4.5 .177 body rupture) and clear the circuit. can be obtained from the factory. Most temperature changes. 3AG 32.385 1.28 6.985 .275 fuses are manufactured from materials which Rerating 4AG 31.75 1.25 7.14 .281 Interrupting ratings may vary with fuse have positive temperature coefficients and, Dimensions 5AG 38.1 1.50 10.31 .406 design and range from 35 amperes AC for For 25°C ambient temperatures, it is 7AG 22.22 .875 6.35 .250 therefore, it is common to refer to cold some 250V metric size (5 x 20mm) fuses recommended that fuses be operated at All dimensions are given in inches unless 8AG 25.4 1 6.35 .250 resistance and hot resistance (voltage drop up to 200,000 amperes AC for the 600V no more than 75% of the nominal current otherwise specified.The fuses in this at rated current), with actual operation KLK series. Information on other fuse rating established using controlled test catalog range in size from the approx. Tolerances being somewhere in between. series can be obtained from the factory. conditions.These test conditions are part 0402 chip size (.041"L x .020"W x .012"H) The dimensions shown in this catalog of UL/CSA/ANCE (Mexico) 248-14 up to the 5 AG, also commonly known as Cold resistance is the resistance obtained are nominal. Unless otherwise specified, Fuses listed in accordance with "Fuses for Supplementary Overcurrent a "MIDGET" fuse (13/32" dia. x 11/2" length). tolerances are applied as follows: using a measuring current of Protection", the primary objective of which UL/CSA/ANCE 248 are required to have no more than 10% of the an interrupting rating of 10,000 amperes fuse's nominal rated current. is to specify common test standards for As new products have been developed ± .010" for dimensions to 2 decimal places. at 125 VAC, with some exceptions (See Values shown in this publication for cold the continued control of manufactured over the years, fuse sizes evolved to fill ± .005" for dimensions to 3 decimal places. items intended for protection against fire, various electrical circuit protection needs. STANDARDS section) which, in many resistance are nominal and representative. etc. Some common variations of these The first fuses were simple, open-wire applications, provides a safety factor far in The factory should be The factory should be contacted concerning standards include: fully enclosed fuseholders, devices, followed in the 1890's by Edison's excess of the short circuit currents available. consulted if this parameter is critical to metric system and fractional tolerances. high contact resistances, air movement, enclosure of thin wire in a lamp base to the design analysis. Hot resistance is the Tolerances do not apply to lead lengths. transient spikes, and changes in connecting make the first plug fuse. By 1904, Nuisance Opening resistance calculated from the stabilized Underwriters Laboratories had established voltage drop across the fuse, with current cable size (diameter and length). Fuse Characteristics Nuisance opening is most often caused by size and rating specifications to meet an incomplete analysis of the circuit under equal to the nominal rated current flowing Fuses are essentially temperature-sensitive safety standards.The renewable type fuses The characteristic of a fuse design consideration. Of all the "Selection Factors" through it. Resistance data on all Littelfuse devices. Even small variations from the and automotive fuses appeared in 1914, refers to how rapidly the fuse responds listed in the FUSE SELECTION GUIDE, products is available upon request. Fuses controlled test conditions can greatly and in 1927 Littelfuse started making very to various current overloads. Fuse special attention must be given to items 1, can be supplied to specified controlled affect the predicted life of a fuse when low amperage fuses for the budding characteristics can be classified into 3, and 6, namely, normal operating current, resistance tolerances at additional cost. it is loaded to its nominal value, usually electronics industry. three general categories: very fast-acting, fast- ambient temperature, and pulses. A fuse

3 4 FUSE FACTS The following Fuse Facts section will In the absence of special requirements, expressed as 100% of rating.The circuit The fuse sizes in the chart below began acting, or Slo-Blo® fuses.The distinguishing cannot be selected solely on the basis of provide a better understanding of both Littelfuse reserves the right to make design engineer should clearly understand with the early "Automobile Glass" fuses, feature of Slo-Blo® fuses is their additional normal operating current and ambient fuses and common applications.The fuses appropriate changes in design, process, that the purpose of these controlled test hence the term "AG".The numbers thermal inertia and their ability to tolerate temperature. described are current-sensitive devices and manufacturing location without notice. conditions is to enable fuse manufacturers were applied chronologically as different normal initial or start-up overload pulses. that serve as an intentional weak link in to maintain unified performance standards manufacturers started making a new size. For example, one prevalent cause of an electrical circuit and provide protection Ambient Temperature for their products, and must account for the For example, "3AG" was the third size Fuse Construction nuisance opening in conventional power against overheating by reliably melting variable conditions of the specific application. placed on the market. The temperature of the air immediately Internal fuse construction may vary depending supplies is the failure to adequately under current-overload conditions. 2 surrounding the fuse. Not to be confused on ampere rating. Fuse photos in this catalog consider the fuse's nominal melting I t They can be used to protect discrete 2 with "room temperature." The fuse To compensate for these variables, the Other non-glass fuse sizes and show typical construction of a particular rating. In such an application, the fuse's I t components or complete circuits. ambient temperature is appreciably higher circuit design engineer who is designing constructions were determined by ampere rating within the fuse series. rating must also meet the inrush current in many cases, because it is enclosed (as for trouble-free, long-life fuse protection, functional requirements, but they still requirements created by the input capacitor Although this guide provides technical generally loads the fuse no more than retained the length or diameter dimensions of the power supply's smoothing filter. information that will help you design in a panel mount fuseholder) or mounted Fuseholders near other heat producing components, 75% of the nominal rating listed by the of the glass fuses.Their designation was The procedure for converting various your circuit protection application, such In many applications, fuses are installed 2 such as resistors, transformers, etc. manufacturer, keeping in mind that modified to AB in place of AG, indicating waveforms into I t circuit demand is as product data and design guidelines, it is overload and short circuit protection that the outer tube was constructed from in fuseholders.These fuses and their given in the FUSE SELECTION GUIDE. not intended to be comprehensive.Testing associated fuseholders are not intended Breaking Capacity must be adequately provided for. Bakelite, fibre, ceramic, or a similar material is strongly recommended and should be other than glass.The largest size fuse for operation as a "switch" for turning For trouble-free, long-life fuse protection, conducted to verify application performance. See Interrupting Rating. The fuses under discussion are shown in the chart is the 5AG, or power "on" and "off". it is good design practice to select a fuse temperature-sensitive devices whose "MIDGET", a name adopted from its use for which the I2t of the waveform is no The following fuse parameters and Current Rating ratings have been established in a 25°C by the electrical industry and the National Interrupting Rating more than 20% of the nominal melting I2t application concepts should be well The nominal amperage value of the fuse. ambient.The fuse temperature generated Electrical Code range which normally Also known as breaking capacity or rating of the fuse. Refer to the section on understood in order to properly select It is established by the manufacturer as by current passing through the fuse, recognizes fuses of 9/16" x 2" as the short circuit rating, the interrupting rating PULSES in the FUSE SELECTION GUIDE. a fuse for a given application. a value of the current the fuse can carry, increases or decreases with ambient smallest standard fuse in use. is the maximum approved current which based on a controlled set of test conditions. temperature change.The ambient the fuse can safely interrupt at its rated Resistance temperature chart on page 7 illustrates FUSE SIZES (See RERATING). voltage. During a fault or short circuit The resistance of a fuse is usually an the effect that ambient temperature has Length Diameter/Width condition, a fuse may receive an insignificant part of the total circuit on the nominal current rating of a fuse. Size mm in mm in Most catalog fuse part numbers include instantaneous overload current many resistance. Since the resistance of fractional series identification and amperage ratings. 0402 1.04 .041 .51 .020 times greater than its normal operating amperage fuses can be several ohms, this ® 0603 1.60 .063 .813 .032 Refer to the OVERCURRENT SELECTION Slo-Blo Thin-Film fuse designs, which current. Safe operation requires that the fact should be considered when using use lower melting temperature 1206 3.18 .125 1.52 .060 GUIDE section for guidance on making 1AG 15.875 .625 6.35 .250 fuse remain intact (no explosion or them in low-voltage circuits. Actual values the proper choice. materials, are more sensitive to ambient 2AG 14.48 .57 4.5 .177 body rupture) and clear the circuit. can be obtained from the factory. Most temperature changes. 3AG 32.385 1.28 6.985 .275 fuses are manufactured from materials which Rerating 4AG 31.75 1.25 7.14 .281 Interrupting ratings may vary with fuse have positive temperature coefficients and, Dimensions 5AG 38.1 1.50 10.31 .406 design and range from 35 amperes AC for For 25°C ambient temperatures, it is 7AG 22.22 .875 6.35 .250 therefore, it is common to refer to cold some 250V metric size (5 x 20mm) fuses recommended that fuses be operated at All dimensions are given in inches unless 8AG 25.4 1 6.35 .250 resistance and hot resistance (voltage drop up to 200,000 amperes AC for the 600V no more than 75% of the nominal current otherwise specified.The fuses in this at rated current), with actual operation KLK series. Information on other fuse rating established using controlled test catalog range in size from the approx. Tolerances being somewhere in between. series can be obtained from the factory. conditions.These test conditions are part 0402 chip size (.041"L x .020"W x .012"H) The dimensions shown in this catalog of UL/CSA/ANCE (Mexico) 248-14 up to the 5 AG, also commonly known as Cold resistance is the resistance obtained are nominal. Unless otherwise specified, Fuses listed in accordance with "Fuses for Supplementary Overcurrent a "MIDGET" fuse (13/32" dia. x 11/2" length). tolerances are applied as follows: using a measuring current of Protection", the primary objective of which UL/CSA/ANCE 248 are required to have no more than 10% of the an interrupting rating of 10,000 amperes fuse's nominal rated current. is to specify common test standards for As new products have been developed ± .010" for dimensions to 2 decimal places. at 125 VAC, with some exceptions (See Values shown in this publication for cold the continued control of manufactured over the years, fuse sizes evolved to fill ± .005" for dimensions to 3 decimal places. items intended for protection against fire, various electrical circuit protection needs. STANDARDS section) which, in many resistance are nominal and representative. etc. Some common variations of these The first fuses were simple, open-wire applications, provides a safety factor far in The factory should be The factory should be contacted concerning standards include: fully enclosed fuseholders, devices, followed in the 1890's by Edison's excess of the short circuit currents available. consulted if this parameter is critical to metric system and fractional tolerances. high contact resistances, air movement, enclosure of thin wire in a lamp base to the design analysis. Hot resistance is the Tolerances do not apply to lead lengths. transient spikes, and changes in connecting make the first plug fuse. By 1904, Nuisance Opening resistance calculated from the stabilized Underwriters Laboratories had established voltage drop across the fuse, with current cable size (diameter and length). Fuse Characteristics Nuisance opening is most often caused by size and rating specifications to meet an incomplete analysis of the circuit under equal to the nominal rated current flowing Fuses are essentially temperature-sensitive safety standards.The renewable type fuses The characteristic of a fuse design consideration. Of all the "Selection Factors" through it. Resistance data on all Littelfuse devices. Even small variations from the and automotive fuses appeared in 1914, refers to how rapidly the fuse responds listed in the FUSE SELECTION GUIDE, products is available upon request. Fuses controlled test conditions can greatly and in 1927 Littelfuse started making very to various current overloads. Fuse special attention must be given to items 1, can be supplied to specified controlled affect the predicted life of a fuse when low amperage fuses for the budding characteristics can be classified into 3, and 6, namely, normal operating current, resistance tolerances at additional cost. it is loaded to its nominal value, usually electronics industry. three general categories: very fast-acting, fast- ambient temperature, and pulses. A fuse

3 4 FUSE FACTS (cont.) Soldering Underwriters Derivation of Nominal The interrupting rating of a UL Listed International Electrotechnical breaking capacity (500A), and high breaking Recommendations Laboratories Melting I2t fuse is 10,000 amperes at 125 volts AC Commission (IEC) capacity (1500A). minimum. Fuses rated at 250 volts may Since most fuse constructions incorporate Reference to "Listed by Underwriters Laboratory tests are conducted on each IEC 60127-2, Sheet 1, 2, 3, 5, 6 be listed as interrupting 10,000 amperes soldered connections, caution should be Laboratories" signifies that the fuses meet fuse design to determine the amount (250 Volts) at 125 volts and, at least, the minimum PTC FACTS used when installing fuses intended to the requirements of UL/CSA/ANCE of energy required to melt the fusing The IEC is different from UL and CSA, since values shown below at 250 volts. IEC is an international organization that Overcurrent circuit protection can be be soldered in place.The application of 248-14 "Fuses for Supplementary element.This energy is described as accomplished with the use of either a 2 writes specifications and does not certify. UL excessive heat can reflow the solder Overcurrent Protection". Some 32 volt nominal melting I t and is expressed as Ampere Interrupting Voltage traditional one time fuse or the more within the fuse and change its rating. Fuses fuses (automotive) in this catalog are listed "Ampere Squared Seconds" (A2 Sec). A Rating Rating In Rating and CSA write the specifications, are of Fuse Amperes responsible for testing and give certification recently developed resettable PTC. Both are heat-sensitive components similar to under UL Standard 275. Reference pulse of current is applied to the fuse, and devices function by reacting to the heat semi-conductors, and the use of heat sinks to "Recognized Under the Component a time measurement is taken for melting 0 to 1 35 250 VAC in the US and Canada, respectively. 1.1 to 3.5 100 250 VAC generated by the excessive current flow during soldering is often recommended. Program of Underwriters Laboratories" to occur. If melting does not occur within 3.6 to 10 200 250 VAC in the circuit.The fuse element melts open, Certification to IEC specifications are given signifies that the item is recognized under a short duration of about 1 millisecond 10.1 to 15 750 250 VAC interrupting the current flow, while the PTC 15.1 to 30 1500 250 VAC by such national organizations as SEMKO Test Sampling Plan the component program of Underwriters (0.001 seconds) or less for thin-film fuses; changes from low resistance to high Laboratories and application approval 8 milliseconds (0.008 seconds) or less for (Swedish Institute of Testing and Approvals Because compliance with certain resistance to limit current flow. Understanding is required. axial and cartridge fuses; the level of pulse UL 275 Automotive Glass Tube of Electrical Equipment) and BSI (British specifications requires destructive testing, the differences in performance between the current is increased.This test procedure is Fuses (32 Volts) Standards Institute) , as well as UL and CSA. overload tests are selected on a statistical two types of devices will make the best repeated until melting of the fuse element basis for each lot manufactured. Voltage Rating UL Listed circuit protection choice easier. is confined to within about 8 milliseconds. IEC 60127-2 defines three breaking capacity The voltage rating, as marked on a fuse, UL ampere ratings tests are conducted at levels (interrupting rating). Low breaking indicates that the fuse can be relied upon 110%, 135%, and 200%. Interrupting rating The most obvious difference is that the Time-Current Curve capacity fuses must pass a test of 35 to safely interrupt its rated short circuit The purpose of this procedure is to assure tests are not required. PTC is resettable.The general procedure The graphical presentation of the fusing amperes or ten times rated current, current in a circuit where the voltage is that the heat created has insufficient time for resetting after an overload has characteristic, time-current curves are whichever is greater, while enhanced breaking equal to, or less than, its rated voltage. to thermally conduct away from the fuse ¨ Recognized Under the occurred is to remove power and allow generally average curves which are capacity fuses must pass a test of 150 Most common voltage ratings used by fuse element.That is, all of the heat energy Component Program of the device to cool down.There are several presented as a design aid but are not 2 amperes and finally high breaking capacity manufacturers for most small-dimension (I t) is used to cause melting. Once the Underwriters Laboratories other operating characteristics that generally considered part of the fuse measurements of current (I) and time (t) fuses must pass a test of 1500 amperes. and midget fuses are 24, 32, 63, 125, 250, ¨ Canadian Recognized differentiate the two types of products. specification.Time-current curves are are determined, it is a simple matter to 300, 350 and 600. In electronic equipment Component Mark The terminology used for PTCs is often extremely useful in defining a fuse, since calculate melting I2t.When the melting Sheet 1 — Type F Quick Acting, with relatively low output power supplies, The Recognized Components Program similar but not the same as for fuses.Two fuses with the same current rating can phase reaches completion, an electrical arc High Breaking Capacity with circuit impedance limiting short of UL is different from UL Listing. For parameters that fall into this category are be represented by considerably different occurs immediately prior to the "opening" Sheet 2 — Type F Quick Acting, circuit currents to values of less than ten recognition, UL will test a fuse to a leakage current and interrupting rating. time-current curves.The fuse specification of the fuse element. Clearing I2t = Melting Low Breaking Capacity times the current rating of the fuse, it is specification requested by the manufacturer. typically will include a life requirement I2t + arcing I2t.The nominal I2t values given Sheet 3 — Type T Time Lag, common practice to specify fuses with The test points can be different from the Leakage Current at 100% of rating and maximum opening in this publication pertain to the melting Low Breaking Capacity 125 or 250 volt ratings for secondary UL Listing requirements for fuses that have times at overload points (usually 135% phase portion of the "clearing" or "opening". Sheet 5 — Type T Time Lag, A PTC is said to have "tripped" when it circuit protection of 500 volts or higher. been designed for a specific application. and 200% of rating). High Breaking Capacity has transitioned from the low resistance Application approval is required by UL Sheet 6 — Type T Time Lag, state to the high resistance state due to As mentioned previously (See RERATING), Standards A time-current curve represents average for the use of fuses recognized under an overload (see figure #1 below). UL Enhanced Breaking Capacity fuses are sensitive to changes in current, ¨ UL LISTED data for the design; however, there may be the Component Program. Protection is accomplished by limiting the not voltage, maintaining their "status quo" A UL Listed fuse meets some differences in the values for any one The letters 'F' and 'T' represent the time- current flow to some low leakage level. at any voltage from zero to the maximum all the requirements of ¨ given production lot. Samples should be CSA Leakage current can range from less than a rating of the fuse. It is not until the fuse the UL/CSA 248-14 Standard. current characteristic of the fast-acting and tested to verify performance, once the CSA Certification in Canada is equivalent hundred milliamps at rated voltage up to a element melts and arcing occurs that Following are some of to UL Listing in the United States. time delay fuses. One of these letters will fuse has been selected. be marked on the end cap of the fuse. few hundred milliamps at lower voltages. the circuit voltage and available power the requirements. The fuse, on the other hand, completely become an issue.The safe interruption The Component Acceptance Program The newest addition to IEC 60127 is part interrupts the current flow and this open of the circuit, as it relates to circuit voltage UL ampere rating tests are conducted at of CSA is equivalent to the Recognition circuit results in "0" leakage current after and available power, is discussed in the 100%, 135%, and 200% of rated current. Program at UL.This CSA Program allows 4 which covers UMF (Universal Modular Fuse) products for both through-hole and being subjected to an overload. section on INTERRUPTING RATING. The fuse must carry 100% of its ampere the manufacturer to declare a specification. surface mount fuse types.The standard rating and must stabilize at a temperature CSA then tests to this specification. To summarize, under an overload condition, that does not exceed a 75°C rise at 100%. allows for both through-hole and surface mount fuses with voltage ratings of 32, 63, a fuse may be used at any voltage that METI/ MITI Approval 125 and 250 volts. is less than its voltage rating without The fuse must open at 135% of rated METI/MITI approval in Japan uses similar detriment to its fusing characteristics. current within one hour. It also must open requirements as those covered in the Breaking capacities for the 32, 63, and 125 Please contact the factory for applications at 200% of rated current within 2 minutes UL/CSA/ANCE 248-14. METI/MITI also volt fuses are the same as low breaking at voltages greater than the voltage rating. for 0-30 ampere ratings and 4 minutes uses special testing similar to that covered capacity fuses covered by IEC 60127 Part Log resistance (ohms) for 35-60 ampere ratings. in the IEC standards. Trip Point 2.The 250 volt UMF fuse is available in a low breaking capacity (100A), intermediate Temperature (°C) Figure 1 5 6 FUSE FACTS (cont.) Soldering Underwriters Derivation of Nominal The interrupting rating of a UL Listed International Electrotechnical breaking capacity (500A), and high breaking Recommendations Laboratories Melting I2t fuse is 10,000 amperes at 125 volts AC Commission (IEC) capacity (1500A). minimum. Fuses rated at 250 volts may Since most fuse constructions incorporate Reference to "Listed by Underwriters Laboratory tests are conducted on each IEC 60127-2, Sheet 1, 2, 3, 5, 6 be listed as interrupting 10,000 amperes soldered connections, caution should be Laboratories" signifies that the fuses meet fuse design to determine the amount (250 Volts) at 125 volts and, at least, the minimum PTC FACTS used when installing fuses intended to the requirements of UL/CSA/ANCE of energy required to melt the fusing The IEC is different from UL and CSA, since values shown below at 250 volts. IEC is an international organization that Overcurrent circuit protection can be be soldered in place.The application of 248-14 "Fuses for Supplementary element.This energy is described as accomplished with the use of either a 2 writes specifications and does not certify. UL excessive heat can reflow the solder Overcurrent Protection". Some 32 volt nominal melting I t and is expressed as Ampere Interrupting Voltage traditional one time fuse or the more within the fuse and change its rating. Fuses fuses (automotive) in this catalog are listed "Ampere Squared Seconds" (A2 Sec). A Rating Rating In Rating and CSA write the specifications, are of Fuse Amperes responsible for testing and give certification recently developed resettable PTC. Both are heat-sensitive components similar to under UL Standard 275. Reference pulse of current is applied to the fuse, and devices function by reacting to the heat semi-conductors, and the use of heat sinks to "Recognized Under the Component a time measurement is taken for melting 0 to 1 35 250 VAC in the US and Canada, respectively. 1.1 to 3.5 100 250 VAC generated by the excessive current flow during soldering is often recommended. Program of Underwriters Laboratories" to occur. If melting does not occur within 3.6 to 10 200 250 VAC in the circuit.The fuse element melts open, Certification to IEC specifications are given signifies that the item is recognized under a short duration of about 1 millisecond 10.1 to 15 750 250 VAC interrupting the current flow, while the PTC 15.1 to 30 1500 250 VAC by such national organizations as SEMKO Test Sampling Plan the component program of Underwriters (0.001 seconds) or less for thin-film fuses; changes from low resistance to high Laboratories and application approval 8 milliseconds (0.008 seconds) or less for (Swedish Institute of Testing and Approvals Because compliance with certain resistance to limit current flow. Understanding is required. axial and cartridge fuses; the level of pulse UL 275 Automotive Glass Tube of Electrical Equipment) and BSI (British specifications requires destructive testing, the differences in performance between the current is increased.This test procedure is Fuses (32 Volts) Standards Institute) , as well as UL and CSA. overload tests are selected on a statistical two types of devices will make the best repeated until melting of the fuse element basis for each lot manufactured. Voltage Rating UL Listed circuit protection choice easier. is confined to within about 8 milliseconds. IEC 60127-2 defines three breaking capacity The voltage rating, as marked on a fuse, UL ampere ratings tests are conducted at levels (interrupting rating). Low breaking indicates that the fuse can be relied upon 110%, 135%, and 200%. Interrupting rating The most obvious difference is that the Time-Current Curve capacity fuses must pass a test of 35 to safely interrupt its rated short circuit The purpose of this procedure is to assure tests are not required. PTC is resettable.The general procedure The graphical presentation of the fusing amperes or ten times rated current, current in a circuit where the voltage is that the heat created has insufficient time for resetting after an overload has characteristic, time-current curves are whichever is greater, while enhanced breaking equal to, or less than, its rated voltage. to thermally conduct away from the fuse ¨ Recognized Under the occurred is to remove power and allow generally average curves which are capacity fuses must pass a test of 150 Most common voltage ratings used by fuse element.That is, all of the heat energy Component Program of the device to cool down.There are several presented as a design aid but are not 2 amperes and finally high breaking capacity manufacturers for most small-dimension (I t) is used to cause melting. Once the Underwriters Laboratories other operating characteristics that generally considered part of the fuse measurements of current (I) and time (t) fuses must pass a test of 1500 amperes. and midget fuses are 24, 32, 63, 125, 250, ¨ Canadian Recognized differentiate the two types of products. specification.Time-current curves are are determined, it is a simple matter to 300, 350 and 600. In electronic equipment Component Mark The terminology used for PTCs is often extremely useful in defining a fuse, since calculate melting I2t.When the melting Sheet 1 — Type F Quick Acting, with relatively low output power supplies, The Recognized Components Program similar but not the same as for fuses.Two fuses with the same current rating can phase reaches completion, an electrical arc High Breaking Capacity with circuit impedance limiting short of UL is different from UL Listing. For parameters that fall into this category are be represented by considerably different occurs immediately prior to the "opening" Sheet 2 — Type F Quick Acting, circuit currents to values of less than ten recognition, UL will test a fuse to a leakage current and interrupting rating. time-current curves.The fuse specification of the fuse element. Clearing I2t = Melting Low Breaking Capacity times the current rating of the fuse, it is specification requested by the manufacturer. typically will include a life requirement I2t + arcing I2t.The nominal I2t values given Sheet 3 — Type T Time Lag, common practice to specify fuses with The test points can be different from the Leakage Current at 100% of rating and maximum opening in this publication pertain to the melting Low Breaking Capacity 125 or 250 volt ratings for secondary UL Listing requirements for fuses that have times at overload points (usually 135% phase portion of the "clearing" or "opening". Sheet 5 — Type T Time Lag, A PTC is said to have "tripped" when it circuit protection of 500 volts or higher. been designed for a specific application. and 200% of rating). High Breaking Capacity has transitioned from the low resistance Application approval is required by UL Sheet 6 — Type T Time Lag, state to the high resistance state due to As mentioned previously (See RERATING), Standards A time-current curve represents average for the use of fuses recognized under an overload (see figure #1 below). UL Enhanced Breaking Capacity fuses are sensitive to changes in current, ¨ UL LISTED data for the design; however, there may be the Component Program. Protection is accomplished by limiting the not voltage, maintaining their "status quo" A UL Listed fuse meets some differences in the values for any one The letters 'F' and 'T' represent the time- current flow to some low leakage level. at any voltage from zero to the maximum all the requirements of ¨ given production lot. Samples should be CSA Leakage current can range from less than a rating of the fuse. It is not until the fuse the UL/CSA 248-14 Standard. current characteristic of the fast-acting and tested to verify performance, once the CSA Certification in Canada is equivalent hundred milliamps at rated voltage up to a element melts and arcing occurs that Following are some of to UL Listing in the United States. time delay fuses. One of these letters will fuse has been selected. be marked on the end cap of the fuse. few hundred milliamps at lower voltages. the circuit voltage and available power the requirements. The fuse, on the other hand, completely become an issue.The safe interruption The Component Acceptance Program The newest addition to IEC 60127 is part interrupts the current flow and this open of the circuit, as it relates to circuit voltage UL ampere rating tests are conducted at of CSA is equivalent to the Recognition circuit results in "0" leakage current after and available power, is discussed in the 100%, 135%, and 200% of rated current. Program at UL.This CSA Program allows 4 which covers UMF (Universal Modular Fuse) products for both through-hole and being subjected to an overload. section on INTERRUPTING RATING. The fuse must carry 100% of its ampere the manufacturer to declare a specification. surface mount fuse types.The standard rating and must stabilize at a temperature CSA then tests to this specification. To summarize, under an overload condition, that does not exceed a 75°C rise at 100%. allows for both through-hole and surface mount fuses with voltage ratings of 32, 63, a fuse may be used at any voltage that METI/ MITI Approval 125 and 250 volts. is less than its voltage rating without The fuse must open at 135% of rated METI/MITI approval in Japan uses similar detriment to its fusing characteristics. current within one hour. It also must open requirements as those covered in the Breaking capacities for the 32, 63, and 125 Please contact the factory for applications at 200% of rated current within 2 minutes UL/CSA/ANCE 248-14. METI/MITI also volt fuses are the same as low breaking at voltages greater than the voltage rating. for 0-30 ampere ratings and 4 minutes uses special testing similar to that covered capacity fuses covered by IEC 60127 Part Log resistance (ohms) for 35-60 ampere ratings. in the IEC standards. Trip Point 2.The 250 volt UMF fuse is available in a low breaking capacity (100A), intermediate Temperature (°C) Figure 1 5 6 PTC Facts (cont.) Overcurrent Selection Guide Worksheet

Interrupting Rating that compare PTCs to fuses illustrate that Summary 1. Define the circuit operating parameters (complete the following form). more rerating is required for a PTC at PTCs are rated for a maximum short Many circuit protection issues are a matter Normal operating current in amperes:______a given temperature. circuit current at rated voltage.This fault of preference, but there is an important Normal operating voltage in volts:______current level is the maximum current that area of application where the use of Maximum interrupt current:______Additional operating characteristics can be the device can withstand. A typical PTC resettable PTCs is becoming a requirement. Ambient Temperature/Rerating:______short circuit rating is 40A. PTCs will not reviewed by the circuit designer in making Much of the design work for personal actually interrupt the current flow (see the decision to choose a PTC or a fuse computers and peripheral devices is Typical overload current:______LEAKAGE CURRENT above), whereas for overcurrent protection. strongly influenced by the Microsoft and Required opening time at specific overload:______fuses do interrupt the current flow in Intel System Design Guide which states that Transient pulses expected:______Agency Approvals response to the overload.The range of "Using a fuse that must be replaced each Resettable or one-time:______interrupting ratings for fuses goes from time an overcurrent condition occurs is PTCs are Recognized under the Agency Approvals:______hundreds of amperes up to 10,000 amperes Component Program of Underwriters unacceptable." In addition, the Plug and at rated voltage. Laboratories to UL Thermistor Standard Play SCSI (Small Computer Systems Mounting type/form factor:______1434.These devices have also been Interface) Specification for this large market Typical resistance (in circuit):______The circuit parameters may dictate the certified under the CSA Component includes the statement, "...must provide a 2. Select the proper circuit protection component (see chart.) component choice based on typical device Acceptance Program. self-resetting device to limit the maximum rating differences. amount of current sourced." 3. Determine the opening time at fault. Resistance Consult the Time-Current (T-C)Curve to determine if the selected part will operate within the constraints of your application. If the device Operating Voltage Rating Reviewing product specifications indicates A selection guide work-sheet appears on opens too soon, the application may experience nuisance operation. If the device does not open soon enough, the overcurrent may damage the following page as an aid in choosing General use PTCs are not rated above that similarly rated PTCs have about twice downstream components.To determine the opening time for the chosen device, locate the overload current on the X-axis of the appropriate the best circuit protection component 60V while fuses are rated up to 600V. (sometimes more) the resistance of fuses. T-C Curve and follow its line up to its intersection with the curve. At this point read the time tested on the Y-axis.This is the average opening and determining when PTCs may be time for that device. If your overload current falls to the right of the curve the device will open. If the overload current is to the left of the Time-Current the appropriate choice for providing curve, the device will not operate. Current Rating overcurrent circuit protection. The operating current rating for PTCs can Characteristic 4. Verify ambient operating parameters. be up to 11A while the maximum level Comparing the time-current curves of Ensure that the application voltage is less than or equal to the device’s rated voltage and that the operating temperature limits are within those for fuses is 60A, in accordance with PTCs to time-current curves of fuses show specified by the device. UL/CSA/ANCE 248-14. that the speed of response for a PTC 5. Verify the device’s dimensions. is similar to the time delay of a Slo-Blo® Using the information from the Designer’s Guide page, compare the maximum dimensions of the device to the space available in the application. Temperature Rating fuse. (see figure #2) The useful upper limit for a PTC is 6. Test the selected product in an actual application. generally 85°C while the maximum operating temperature for fuses is 125°C. The temperature rerating curves (see fig. 3) Overcurrent Selection Guide Surface Mount 30V PTC 60V PTC Nano2® PICO® Key to chart: Curve A: Thin-Film Fuses and 313 Series (.010 to .150A) PTC Leaded Leaded 0402 SMF 0603 SMF 1206 SMF SMF Fuse II Fuse 2AGs 5x20mm 3AGs/3ABs Midgets Curve B: Very Fast-Acting, Fast Acting and Spiral Wound Slo Blo¨ Fuses Operating 0.200 - 0.900 - 0.100 - 0.250 - 0.250 - 0.125 - 1.5A Fuse 1.5A PTC Curve C: Resettable PTCs 0.062 - 0.062 - 0.100 - 0.032 - 0.010 - 0.100 - 100 Current Range 3.0A 9A 3.75A 2A 5A 7A 15A 15A 10A 15A 35A 30A C 140 Maximum Voltage (*) 15V 30V 60V 24V 32V 125V 250V 250V 250V 250V 250V 600V Maximum 40A 40A 40A 35A 50A 50A 50A 50A 10,000A 10,000A 10,000A 200,000A 120 Interrupting Rating (**) 10 1206L Series PTC A Temperature Range –40°C to –40°C to –40°C to –55°C to –55°C to –55°C to –55°C to –55°C to –55°C to –55°C to –55°C to –55°C to 430 Series Slo-Blo® B 85°C 85°C 85°C 90°C 90°C 90°C 125°C 125°C 125°C 125°C 125°C 125°C Thin-Film fuse 100 B Thermal Rerating High High High Medium Medium Medium Low Low Low Low Low Low 1 Opening time at Fast to 80 Slow Slow Slow Fast Fast Fast to Fast to Fast to Fast to Fast to Fast to 200% IN (***) Medium Medium Medium Medium Slow Slow Slow

A Transient Withstand Low Low Low Low Low Low to Low to Low to Low to Low to Low to Low to 60 TIME IN SECONDS Medium Medium Medium High High High High PERCENT OF RATING* 0.1 25°C Resistance Medium Medium Medium Low Low Low Low Low Low Low Low Low 40 C CSA, BSI, Agency Approvals UL, CSA, UL, CSA, UL CSA, UL, CSA UL, CSA UL, CSA UMF, UL, UL, CSA, UL, CSA, UL, CSA TUV TUV TUV VDE, MITI, UL, CSA 20 CSA, MITI MITI MITI SEMKO, UL MITI 0.01 -60°C -40°C -20°C 0°C 20°C 40°C 60°C 80°C 100°C 120°C Operational Uses Multiple Multiple Multiple One Time One Time One Time One Time One Time One Time One Time One Time One Time ° ° ° ° ° ° ° ° ° ° -76 F -40 F -4 F 32 F 68 F 104 F 140 F 176 F 212 F 248 F Mounting/Form Surface Surface Surface Surface Leaded Leaded Surface Leaded Leaded or Leaded or Leaded or Cartridge AMBIENT TEMPERATURE Factor Mount Mount Mount Mount Mount Cartridge Cartridge Cartridge ¥ Ambient temperature effects are in addition to the normal derating. 0.001 Figure 2 Figure 3 *Maximum operating voltage in the series, parts may be used at voltages equal to or less than this value. 0.1 1 10 100 CURRENT IN AMPERES **Maximum interrupting rating at specified voltage which may be less than maximum operating voltage. *** Opening time is in relation to other forms of protection. A fast device will typically operate within three seconds at 200% of rated current.

7 8 PTC Facts (cont.) Overcurrent Selection Guide Worksheet

7 8 RESETTABLE PTCs SURFACE MOUNT FUSES 1206L Series 1812L Series 3425L Series 30R Series 60R Series 0603 SlimLineª Lead-Free 0402 Telecom NANO2¨ Surface Mount Surface Mount Surface Mount Radial Lead Radial Lead Very Fast-Acting Thin-Film Fuse Very Fast-Acting Thin-Film Fuse Minature Fuse 431 Series 435 Series 461 Series

¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨ Ihold Vmax Ihold Vmax Ihold Vmax Vmax Vmax (A) (VDC) (A) (VDC) (A) (VDC) 30VDC 60VDC VOLTAGE RANGE: For new designs 24V 250V 0.20 15.0 0.50 15.0 1.50 15 AMPERE RANGE: 0.25 Ð 2.0A 0.5 Ð 2.0A 0.25 15.0 0.75 13.2 2.00 15 Ampere Range Ampere Range use 434 or 0.35 6.0 1.10 6.0 2.50 15 0.90 Ð 9.0A 0.10 Ð 3.75A 0.50 6.0 1.25 6.0 3.00 6 INTERRUPTING 467 Series 35A @ 24 VDC 50A @ 250VAC 0.75 6.0 1.50 6.0 RATINGS: 60A @ 600 VAC* 1.10 6.0 1.60 6.0 *See data sheet for test conditions. 1.50 6.0 2.00 6.0 2.60 6.0

1.04 10.10 1.60 (.063") (.041") (.397")

3.15 mm (.124) 3.12 4.47 mm (.176) .79 LF1.25AT (.031") .51 (.123") 0.635 0.635 (.020") 1.65 mm (.025) (.025) 3.12 3.15 mm R .20 (.008") (.123") (.064) 260 (.124) H 3.05 .30 (.120) 0.51-0.89 .46 (.020-.035) (.012") 0.58 mm (.018") (.023) C 0.66 mm (.026)

SURFACE MOUNT FUSES

ª ª 2 ¨ 2 ¨ 2 ¨ NEW SlimLine Lead-Free 1206 SlimLine 1206 1206 NEW NANO 250V UMF NEW NANO 250V UMF NANO Very Fast-Acting Thin-Film Fuse Very Fast-Acting Thin-Film Fuse Very Fast-Acting Thin-Film Fuse Fast-Acting Fuse Time Lag Fuse Very Fast-Acting Type Fuse 466 Series 433 Series 429 Series 464 Series 465 Series 451/453 Series

¨ ¨ ¨ ¨ ¨ ¨

¨ ¨ VOLTAGE RANGE: 24-125V 32 Ð 125V For new designs AMPERE RANGE: 0.125 Ð 7.0A 0.125 Ð 3.0A use 433 or VOLTAGE RANGE: 250V 250V 65 Ð 125V AMPERE RANGE: 1 Ð 6.3A 1 Ð 6.3A 0.062 Ð 15.0A INTERRUPTING 0.125 Ð .375A 50A @ 125VAC/VDC 0.125 Ð .375A 50A @ 125VAC/VDC 466 Series RATINGS: 0.5 Ð 2A 50A @ 63VAC/VDC 0.5 Ð 2A 50A @ 63VAC/VDC INTERRUPTING 100A @ 250VAC 100A @ 250VAC 0.062 Ð 8A 50A @ 125VAC/VDC 2.5 Ð 3A 50A @ 32VAC/VDC 2.5 Ð 3A 50A @ 32VAC/VDC RATINGS: 300A @ 32VDC 4 Ð 7A 35A @ 24VAC/VDC 4 Ð 7A 35A @ 24VAC/VDC *Available in 2003 *Available in 2003 10A 35A @ 125VAC 3.18 50A@125VDC 1.52 1.52 (.125") (.060") (.060") 300A @ 32VDC 1.52 3.18 3.18 (.060") 12 Ð 15A 50A @ 65VAC/VDC (.125") (.125") .66 .66 300A @ 24VDC (.026") (.026") 12.1 12.1 (.475") (.475") 6.10 .58 .58 (.240") (.023") (.023") 1.14 4.5 FF500mAL 4.5 FT500mAL (.045") (.177") AC250V (.177") AC250V F .56 .56 (.022") (.022") 7 A 4.5 4.5 2.69 (.177") (.177") (.106")

2.69 ª ª (.106") 1206 NEW SlimLine Lead-Free 0603 SlimLine 0603 Slo-Blo¨ Thin-Film Fuse Very Fast-Acting Thin-Film Fuse Very Fast-Acting Thin-Film Fuse 430 Series 467 Series 434 Series NANO2 ¨ UMF NANO2 ¨ EBF Ð 350V ¨ ¨ ¨ ¨ ¨ ¨ Fast-Acting Type Fuse Slo-Blo¨ Type Fuse Fast Acting Type Fuse VOLTAGE RANGE: 32 Ð 63V 32V 32V 455 Series 452/454 Series 446/447 Series AMPERE RANGE: 0.5 Ð 3.0A 0.25 Ð 5.0A 0.25 Ð 5.0A

¨ ¨ ¨ ¨ INTERRUPTING 0.5 Ð 1.5A 50A @ 63VAC/VDC 0.25 Ð 1A 50A @ 32VAC/VDC 0.25 Ð 1A 50A @ 32VAC/VDC RATINGS: 2A 35A @ 63VAC/VDC 1.25 Ð 5A 35A @ 32VAC/VDC 1.25 Ð 5A 35A @ 32VAC/VDC 3A 50A @ 32VAC/VDC VOLTAGE RANGE: 125V 125V 350V AMPERE RANGE: 0.40 Ð 1.6A 0.375 Ð 5A 2 Ð 10A

.787 .787 INTERRUPTING (.031") (.031") 50A @ 125VAC/VDC 50A @ 125VAC/VDC 100A @ 350VAC 1.52 RATINGS: 300A @ 32VDC 50A @ 125VDC (.060") 1.60 1.60 (.063") (.063") 450A @ 60VDC 3.18 (.125") .305 .305 6.10 6.10 (.012") (.012") (.240") (.240") LF PATA

0 3.81

6 0 2 (.150") 1.14 F F T 350V (.045") 1 A 1 A 10.92 .279 .279 (.430") (.011") (.011") 2.69 2.69 (.106") (.106")

2.69 2.69 8.76 (.106") (.106") (.345")

5.59 (.220")

9 10 SURFACE MOUNT FUSES 0603 SlimLine™ Lead-Free 0402 Telecom NANO2® Very Fast-Acting Thin-Film Fuse Very Fast-Acting Thin-Film Fuse Minature Fuse 431 Series 435 Series 461 Series

® ® ® ® ® ® VOLTAGE RANGE: For new designs 24V 250V AMPERE RANGE: use 434 or 0.25 – 2.0A 0.5 – 2.0A INTERRUPTING 467 Series 35A @ 24 VDC 50A @ 250VAC RATINGS: 60A @ 600 VAC* *See data sheet for test conditions.

1.04 10.10 1.60 (.063") (.041") (.397") 3.12 .79 LF1.25AT (.031") .51 (.123") (.020") 3.12 R .20 (.008") (.123") .46 .30 (.018") (.012")

2® 2® 2® NEW NANO 250V UMF NEW NANO 250V UMF NANO Fast-Acting Fuse Time Lag Fuse Very Fast-Acting Type Fuse 464 Series 465 Series 451/453 Series

® ®

VOLTAGE RANGE: 250V 250V 65 – 125V AMPERE RANGE: 1 – 6.3A 1 – 6.3A 0.062 – 15.0A

INTERRUPTING 100A @ 250VAC 100A @ 250VAC 0.062 – 8A 50A @ 125VAC/VDC RATINGS: 300A @ 32VDC *Available in 2003 *Available in 2003 10A 35A @ 125VAC 50A@125VDC 300A @ 32VDC 12 – 15A 50A @ 65VAC/VDC 300A @ 24VDC

12.1 12.1 (.475") (.475") 6.10 (.240")

4.5 FF500mAL 4.5 FT500mAL (.177") AC250V (.177") AC250V F 7 A 4.5 4.5 2.69 (.177") (.177") (.106")

2.69 (.106")

NANO2®UMF NANO2® EBF – 350V Fast-Acting Type Fuse Slo-Blo® Type Fuse Fast Acting Type Fuse 455 Series 452/454 Series 446/447 Series

® ® ® ®

VOLTAGE RANGE: 125V 125V 350V AMPERE RANGE: 0.40 – 1.6A 0.375 – 5A 2 – 10A

INTERRUPTING 50A @ 125VAC/VDC 50A @ 125VAC/VDC 100A @ 350VAC RATINGS: 300A @ 32VDC 50A @ 125VDC 450A @ 60VDC 6.10 6.10 (.240") (.240") LF PATA

0 3.81

6 0 2 (.150") F F T 350V 1 A 1 A 10.92 (.430") 2.69 2.69 (.106") (.106")

2.69 2.69 8.76 (.106") (.106") (.345")

5.59 (.220")

10 SURFACE MOUNT FUSES AXIAL LEADED AND CARTRIDGE FUSES PICO¨ SMF PICO¨ SMF FLAT-PAK¨ FLAT-PAK¨ MICRO 3AG 3AG Very Fast-Acting Type Fuse Slo-Blo¨ Type Fuse Fast Acting Type Fuse Slo-Blo¨ Type Fuse Very Fast-Acting Type Fuse Fast-Acting Type Fuse Slo-Blo¨ Type Fuse 459 Series 460 Series 202 Series 203 Series 272/273/274/278/279 Series 312/318/392 Series 313/315/393 Series

¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨ U U ¨ ¨ L ¨ QPL L ¨ ¨ QPL ¨ ¨ QPL VOLTAGE RANGE: 125V 125V 250V 250V VOLTAGE RANGE: 125V 32 Ð 250V 32 Ð 250V AMPERE RANGE: 0.062 Ð 5.0A 0.5 Ð 5.0A 0.062 Ð 5.0A 0.25 Ð 5.0A AMPERE RANGE: 0.002 Ð 5.0A 0.031 Ð 35.0A 0.01 Ð 30.0A INTERRUPTING 50A @ 125VAC 50A @ 125VAC/VDC 50A @ 250VAC 50A @ 250VAC INTERRUPTING 10,000A @ 125VAC/VDC 10,000A @ 125VAC 0.01 Ð 8A 10,000A @ 125VAC 4 Ð 8A 200A @ 250VAC RATINGS: 300A @ 125VDC RATINGS: 35A @ 250VAC .01 Ð 1A 35A @ 250VAC 10 Ð 30A 300A @ 32VAC 203 FLAT- PAK 1.25 Ð 3.2A 100A @ 250VAC 202G FLAT-PAK 5 A 1 2 5 V T 2A .170" F 2A LF 250 V LF 4 5 9 LF 250 V PAT 4563666 ¤ ¤ B 3 PAT 4563666 .372" .285" .372" REF. .250" .250" .120" .165" .165"

5.969 7.30 4.32 (.235") (.29") (.17") AXIAL LEADED FUSES 6.35 8.89 6.985 6.985 PICO¨ II PICO¨ II 250V PICO¨ II PICO¨ II (.25") (.35") 25.4 (1.0") (.275") (.275") 32.385 ¨ 32.385 Very Fast-Acting Type Fuse Very Fast-Acting Type Fuse Time Lag Type Fuse Slo-Blo Type Fuse (1.28") (1.28") 251/253 Series 263 Series 471 Series 473 Series 3AB 3AB 3AB ¨ ¨ QPL ¨ ¨ ¨ ¨ ¨ ¨ Fast-Acting Type Fuse Slo-Blo¨ Type Fuse Special Very Fast-Acting Type Fuse VOLTAGE RANGE: 32 Ð 125V 250V 125V 125V 314/324/394 Series 326/325/390 Series 322 Series AMPERE RANGE: 0.062 Ð 15A 0.062 Ð 5.0A 0.5 Ð 5.0A 0.375 Ð 7.0A U U L ¨ ¨ L ¨ ¨ ¨ QPL ¨ QPL ¨ INTERRUPTING 300A @ Rated VDC 50A @ 250VAC 50A @ 125VAC/VDC 50A @ 125VAC/VDC RATINGS: 50A @ Rated VAC VOLTAGE RANGE: 125 Ð 250V 125 Ð 250V 65 Ð 250V AMPERE RANGE: 0.125 Ð 30.0A 0.010 Ð 30A 1 Ð 30A INTERRUPTING 0.125 Ð 20A 10,000A @ 125VAC/DC 0.010 Ð 3.24A 10,000A @ 125VAC 1 Ð 10A 10,000A @ 125VAC RATINGS: 25 Ð 30A 400A @ 125VAC/DC 100A @ 250VAC 100A @ 250VAC 0.125 Ð .75A 35A @ 250VAC 4 Ð 20A 10,000A @ 125VAC 12 Ð 30A 200A @ 65VAC 1 Ð 3A 100A @ 250VAC 400A @ 250VAC 4 Ð 15A 750A @ 250VAC 20A 1,000A @ 250VAC 25 Ð 30A 400A @ 125VAC 7.11 (.280") 7.62 (.300") 7.11 (.280") 7.11 (.280") 25 Ð 30A 100A @ 250VAC REF. REF. REF. REF. F 3 1/2 A LF 1 A L F 1 A LF 1 A 250 V L 0.64 (.025") DIA. 0.64 (.025") DIA. 0.64 (.025") DIA. 0.64 (.025") DIA. (1/16 – 10A) 3.683 (.145") 3.175 (.125") 2.413 (.095") DIA. REF. 2.413 (.095") DIA. REF. 0.81 (.032") DIA. DIA. REF. DIA. REF. (12 – 15A)

AXIAL LEADED AND CARTRIDGE FUSES 6.35 (.25") 6.985 6.985 (.275") (.275") 2AG 2AG Special 350V 2AG 2AG 31.75 (1.25") ¨ 32.385 32.385 Fast-Acting Type Fuse Fast-Acting Type Fuse Slo-Blo Type Fuse Surge Withstand Type Fuse (1.28") (1.28") 224/225/288/289 Series 220 007 Series 229/230/290/291 Series 229/230 Series (Select Ratings) HIGH RELIABILITY AXIAL LEADED CARTRIDGE FUSES U ¨ ¨ U ¨ U ¨ ¨ L MIL ¨ ¨ L ¨ MIL ¨ L PICO¨ MICRO 5 x 20mm 5 x 20mm VOLTAGE RANGE: 125 Ð 250V 350V 125 Ð 250V 125 Ð 250V Very Fast-Acting Type Fuse Very Fast-Acting Type Fuse IEC Fast-Acting Type Fuse IEC Slo-Blo¨ Type Fuse AMPERE RANGE: 0.10 Ð 10.0A 0.10 Ð 10.0A 0.25 Ð 7.0A 0.250 Ð 1.50A 265/266/267 Series 262/268/269 Series 217/227 Series 218/228/213 Series INTERRUPTING 0.1 Ð 10A 10,000A @ 125VAC 100A @ 350VAC 0.25 Ð 3.5A 10,000A @ 125VAC 0.25 Ð 1.25A 10,000A @ 125VAC V V DE DE RATINGS: ¨ ¨ 0.1 Ð 1A 35A @ 250VAC 4 Ð 7A 400A @ 125VAC 0.25 Ð 1A 35A @ 250VAC ¨ QPL ¨ ¨ QPL ¨ ¨ ¨ 1.5 Ð 3.5A 100A @ 250VAC 0.25 Ð 1A 35A @ 250VAC 0.25A 100A @ 250VAC VOLTAGE RANGE: 32 Ð 125V 125V 250V 250V 1.25 Ð 3.5A 100A @ 250VAC 1.25 Ð 1.50A 60A @ 600VAC AMPERE RANGE: 0.062 Ð 15.0A .002 Ð 5.0A 0.032 Ð 10A 0.032 Ð 15A INTERRUPTING 300A @ rated VDC 10,000A @ 125VAC/VDC 35A or 10 times rated current; 35A or 10 times rated current; RATINGS: 50A @ rated VAC whichever is greater whichever is greater

4.5 4.5 4.5 4.5 (.177") (.177") (.177") (.177") 4.32 5.969 7.112 (.28") 14.48 (.57") 14.48 (.57") 14.48 (.57") 14.48 (.57") 7.37 (.17") (.235") 2.36 (.29") (.093") 3/4 A DIA.

5.25 22.5 MAX 5.25 22.5 MAX 11 Transparent (.207") (.886") (.207") (.886") 12 Insulating Sleeve Also available in 25.4mm lead length SURFACE MOUNT FUSES AXIAL LEADED AND CARTRIDGE FUSES PICO¨ SMF PICO¨ SMF FLAT-PAK¨ FLAT-PAK¨ MICRO 3AG 3AG Very Fast-Acting Type Fuse Slo-Blo¨ Type Fuse Fast Acting Type Fuse Slo-Blo¨ Type Fuse Very Fast-Acting Type Fuse Fast-Acting Type Fuse Slo-Blo¨ Type Fuse 459 Series 460 Series 202 Series 203 Series 272/273/274/278/279 Series 312/318/392 Series 313/315/393 Series

4.5 4.5 4.5 4.5 (.177") (.177") (.177") (.177") 4.32 5.969 7.112 (.28") 14.48 (.57") 14.48 (.57") 14.48 (.57") 14.48 (.57") 7.37 (.17") (.235") 2.36 (.29") (.093") 3/4 A DIA.

5.25 22.5 MAX 5.25 22.5 MAX 11 Transparent (.207") (.886") (.207") (.886") 12 Insulating Sleeve Also available in 25.4mm lead length AXIAL LEADED CARTRIDGE FUSES 5 x 20mm 5 x 20mm 5 x 20mm 5 x 20mm IEC Fast-Acting Type Fuse IEC Slo-Blo¨ Type Fuse IEC Slo-Blo¨ Type Fuse MITI Medium-Acting 216/226 Series 215/221 Series 219 Series 232 Series

V V V DE ¨ DE ¨ DE ¨ ¨ ¨ ¨

VOLTAGE RANGE: 250VAC 250V 250V 125/250V AMPERE RANGE: 0.050 Ð 10A 0.200 Ð 10A 0.125 Ð 6.3A 1 Ð 10A INTERRUPTING 1500A 1500A 150A 500A @ 125VAC RATINGS: 100A @ 250VAC

22.5 MAX 22.5 MAX 22.5 MAX 5.25 (.886") 5.25 (.886") 5.25 22.5 MAX 5.25 (.886") (.207") (.207") (.207") (.886") (.207") 5 x 20mm 5 x 20mm 5 x 20mm SFE UL/CSA Fast-Acting Type Fuse UL/CSA Medium-Acting Type Fuse UL/CSA Slo-Blo¨ Type Fuse Low Voltage, Fast-Acting 235/236 Series 233/234 Series 238/239 Series 307 Series

U U U ¨ L ¨ ¨ L ¨ ¨ L ¨ U ¨ L VOLTAGE RANGE: 125 Ð 250V 125 Ð 250V 125 Ð 250V 32V AMPERE RANGE: 0.10 Ð 6A 1 Ð 10A 0.20 Ð 5A 4 Ð 30A INTERRUPTING 0.10 Ð 1A 10,000A @ 125VAC 1A Ð 3.5A 10,000A @ 125VAC 0.20 Ð 1A 10,000A @ 125VAC RATINGS: 35A @ 250VAC 100A @ 250VAC 35A @ 250VAC 1.25 Ð 3.15A 10,000A @ 125VAC 4 Ð 10A 10,000A @ 125VAC 1.25 Ð 3.15A 10,000A @ 125VAC 100A @ 250VAC 200A @ 250VAC 100A @ 250VAC 4 Ð 6A 10,000A @ 125VAC 4 Ð 5A 10,000A @ 125VAC

6.35 (.25")

22.5 MAX 22.5 MAX 22.5 MAX 5/8"Ð1 7/16" 5.25 (.886") 5.25 (.886") 5.25 (.207") (.207") (.886") 15.875 - 36.525 (.207") (.625 - 1.438") SUBMINIATURE CARTRIDGE FUSES LT-5 LT-5 LT-5 LT-5 Fast-Acting Type Fuses Time Lag Type Fuses Time Lag Extended Break Time Lag Type Fuses 662 Series 663 Series Capacity 664 Series 665 Series

V V V DE DE DE UL ¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨ VOLTAGE RANGE: 250V 250V 250V 250V AMPERE RANGE: 0.050 Ð 5.0A 0.050 Ð 6.3A 0.80 Ð 6.3A 0.050 Ð 6.3A INTERRUPTING 35A or 10 times rated current; 35A or 10 times rated current; 100A @ 250VAC 50A @ 250VAC RATINGS: whichever is greater whichever is greater

Note: 4.3mm Lead length also available Note: 4.3mm Lead length also available Note: 4.3mm Lead length also available Note: 4.3mm Lead length also available 8.45 8.45 8.45 8.45 (.333") 18.8 (.333") 18.8 (.333") 18.8 (.333") 18.8 (.740") (.740") (.740") (.740")

8.5 8.5 8.5 8.5 (.335") (.335") (.335") (.335")

13 CARTRIDGE FUSES Ð Midget AC AC/DC 250 Volt 500 Volt Fast-Acting Type Fuse Fast-Acting Type Fuse Slo-Blo¨ Type Fuse Slo-Blo¨ Type Fuse KLK Series (F60C) KLKD Series FLM Series (F09B) FLQ Series

U ¨ U ¨ U U ¨ L QPL ¨ L ¨ L ¨ QPL ¨ L ¨ VOLTAGE RANGE: 600V 600V 250V 500V AMPERE RANGE: 0.10 Ð 30A 0.10 Ð 30A 0.10 Ð 30A 0.10 Ð 30A INTERRUPTING 100,000A @ 600VAC 10,000A @ 600VDC 10,000A @ 250VAC 10,000A @ 500VAC RATINGS: (capable of 200,000A) 100,000A @ 600VAC (capable of 200,000A)

38.1 (1.50") 10.31 (.406") 38.1 (1.50") 10.31 (.406") 38.1 (1.50") 10.31 (.406") 38.1 (1.50") 10.31 (.406")

3 ¨ 1/8" Long Slo-Blo Laminated Fiber Body Fast-Acting Type Fuse Pin Indicating Type Fuse Fast-Acting Type Fuse Fast-Acting Type Fuse BLS Series FLA Series BLF Series BLN Series (F09A)

U L U ¨ U ¨ U ¨ ¨ ¨ L QPL ¨ L ¨ L VOLTAGE RATING: 250 Ð 600V 125VAC 125 Ð 250V 250V AMPERE RANGE: 0.20 Ð 10A 0.10 Ð 30A 0.50 Ð 30A 1.0 Ð 30A INTERRUPTING 10,000A @ rated VAC 10,000A @ rated VAC 10,000A @ rated VAC 10,000A @ 250VAC RATINGS: *12-30A are dual tube

34.9 (1.375") 10.31 (.406") 38.1 (1.50") 10.31 (.406") 38.1 (1.50") 10.31 (.406") 38.1 (1.50") 10.31 (.406")

Class CC/CD KLQ FLU Fast-Acting & Slo-Blo¨ Type Fuses Increased Time-Delay Multimeter Protection CCMR/KLDR/KLKR Series KLQ Series FLU Series

U U ¨ L ¨ ¨ L ¨ ¨ ¨

VOLTAGE RATING: 600VAC, 250 Ð 300VDC 600VAC 1000VAC/VDC AMPERE RANGE: 0.10 Ð 60A 1.0 Ð 6.0A 0.44A, 11A INTERRUPTING AC: 200,000A 10,000A @ rated VAC 1000VAC/VDC RATINGS: DC: 20,000A

38.1 6.4 34.9 (1.375") 10.31 (.406") 34.9 (1.375") 10.31 (.406") (1.50") (.25") 10.3 35-60A 21.6 0-30A (.41") (.850")

3.2 .44A 12.7 (.125") (.50") 47.8 (1.880") 38.1 (1.50") 10.31 (.406")

11A 14 HAZARDOUS AREA FUSES FUSEHOLDERS 481 482 BARRIER NETWORK SAFE-T-PLUS Alarm Indicating Fuse Alarm Indicating 242 Series 259 Series 481 Series 482 Series

¨ ¨

VOLTAGE RATING: 250V 250V VOLTAGE RATING: 125VAC/VDC MOUNTING TYPE: PCB and Panel AMPERE RANGE: 0.050 Ð 0.25A 0.062 Ð 1A AMPERE RANGE: 0.18 Ð 20A FUSE TYPE: 481 Alarm Indicating INTERRUPTING 4000A @ 250VAC/VDC 50A @ 125VAC INTERRUPTING 450A @ 60VDC ¥ Single pole and gangable RATINGS: 300A @ 125VDC RATINGS: 300A @ 125VAC versions available (1-15A) 300A @ 125VDC (up to 15A) ¥ 20A version is single pole only 200A @ 125VDC (up to 20A)

13 (.512") 3.02 (.119") 17.8 (.70") 21.3 8 (.84") (.315") 5.8 5.3 8.40 (.23") (.21") (.331") 19.6 1-15A 15.7 19.8 (.77") (.62") (.78"± .03) 10 TYP 5.8 5.3 24.9 (.394") (.23") (.21") (.98"±.03) 16.9 20A (.665") MAX. 81.5 BLADE TERMINAL AND SPECIAL PURPOSE FUSES (.73") ATO ¨ MINI¨ MINI¨ 42V MAXITM International Flip-Top Shock-Safe Shock-Safe Fast-Acting Type Fuse Fast-Acting Type Fuse Fast-Acting Type Fuse Slo-Blo¨ Type Fuse Shock-Safe Shock-Safe 245 Series 345 Series 257 Series 297 Series 997 Series 299 Series 345 Series 346/286 Series

V U U DE ¨ L ¨ ¨ L ¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨

VOLTAGE RATING: 32V 32V 58V 32V MOUNTING TYPE: Panel Mount Panel Mount Panel Mount PC Board Mount AMPERE RANGE: 1.0 Ð 40A 2.0 Ð 30A 2.0 Ð 30A 20 Ð 80A FUSE TYPE: 3AG, 5x20mm, 2AG 3AG, 5x20mm, 2AG 2AG 3AG, 5x20mm, Midget INTERRUPTING 1000A @ 32VDC 1000A @ 32VDC 1000A @ 58VDC 1000A @ 32VDC RATINGS:

special 1/2" thread .93" REF. .63" DIA. 1.77" (NUT DIA) 5.08 (.20") 10.922 (.43") 3.81 (.15") 19.05 29.21 (1.15") 8.85 (.35") (.75") 8.75 (.34") .60" DIA. .44" MINI 8.636 .20" 12.192 (.48") (.34") 7.5 21.59 (.85") ? 1.59" MINI (.30") .24" 7.37 2.81 12.7 (.50") 6.35 (.25") (.29") 0.825 (.11") (.033") 10.9 .46" REF. (.43") MAXITM 42V MEGA¨ MIDI¨ JCASEª 42V Shock-Safe Low Profile Blown Fuse Blown Fuse Slo-Blo¨ Type Fuse Slo-Blo¨ Type Fuse Fast-Acting High Current Fuse Slo-Blo¨ Cartridge Fuse 571 Series 348 Series Indicating Type Indicating Type 999 Series 298 Series 498 Series 995 Series 344 Series 344 Series

¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨

VOLTAGE RATING: 58V 32V 32V 58VDC MOUNTING TYPE: Panel Mount Snap Mount Snap Mount Panel Mount AMPERE RANGE: 20 Ð 80A 100 Ð 250A 40 Ð 150A 20 Ð 60A FUSE TYPE: Midget 3AG 3AG 3AG INTERRUPTING 1000A @ 58VDC 2000A @ 32VDC 1000A @ 32VDC 1000A @ 58VDC RATINGS:

1.95" (WITH 1.95" (WITH 29.21 FUSE ASSEMBLED) (1.15") 14.10 12.00 FUSE ASSEMBLED) 41 5.50 (.56") (.47") .92" .85" .28" 19.05 16.256 (1.61) (.22") DIA. .85" .53" (.75") (.64") 22.15 .94" (.87") 21.60 10 + + + 6.75 (.27") MAX. (.85") 12 68.58 (2.70") (.394) 2.40" (.47) 1.00 FUSE (.039") 27.0 .87" 24.4 .42" .87" .42" 2.67" MAXIMUM 3.3 (.13") (1.06") 12.70 (.5") 10.668 (.96") PRESS WITH FUSE INSTALLED ± 0.38 (.015) 18.7 0.825 (.032) (.42") 8 (.74") ± 0.35 (.014") (.315) 0.38 10.00 8.00 (.39") (.31") (.015") 45°

10.10 4.40 (.40") (.17") 12.10 10.00 (.48") (.39") 15 16 HAZARDOUS AREA FUSES FUSEHOLDERS 481 482 BARRIER NETWORK SAFE-T-PLUS Alarm Indicating Fuse Alarm Indicating 242 Series 259 Series 481 Series 482 Series

¨ ¨

V U U DE ¨ L ¨ ¨ L ¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨

¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨

10.10 4.40 (.40") (.17") 12.10 10.00 (.48") (.39") 15 16 FUSEHOLDERS FUSEHOLDERS Traditional RF Shielded Watertight For ATO¨ For MINI¨ For MINI¨ SMF Omni-Blok¨ 342 Series 282 Series 342 Series Fuses Fuses Fuses Fuse Block 445 Series 153 Series 153 Series 154 Series

® ® QPL ® QPL ® ® ® ® MOUNTING TYPE: Panel Mount Front/Rear Panel Panel Mount MOUNTING TYPE: PC Board Mount In-Line, Easy Crimp PC Board Mount Molded Base FUSE TYPE: 3AG MicroTM Plug-ins 3AG FUSE TYPE: ATO ® Fuses MINI® Fuses MINI® Fuses NANO2® Fuse See NANO2® Fuse for electrical characteristics.

.69" DIA. .90" REF. MATTED 17.02 .680" .680" FUSE .7" .94" (CRIMP) AREA (.67") .7" DIA. 22 3.81 .69" .300" (.866") .508" F (.150") HEX 17.02 (.67") 32 V 1.31" FLATS .81" 1.3 " ¤ 15 A 1" .69" ¤ 10 A HEX 9.73 FLATS (.383") REF. .46" .015" 52.58 .152" 9 11.43 (2.07") Ma 4.5 (.354") (.45") .30" (.177") Ref. END VIEW SIDE VIEW O erall height ith f se installed is 5.03 RF Shielded/ “Push-On” Vertical/ Twist-Lock (.198") Watertight Retaining Nut Horizontal 155 Series FUSE BLOCKS AND CLIPS 340 Series 281 Series 281 Series Omni-Blok¨ Metric Omni-Blok¨ 3AG Omni-Blok¨ 600 Volt L600 Series QPL ® Fuse Block Fuse Block Fuse Block 254 Series 520 Series 354 Series MOUNTING TYPE: Panel Mount Chassis Mount PC Board Mount In-Line Mount TM TM V DE U ® FUSE TYPE: 3AG MICRO & MICRO & Low Voltage 3AG, SFE ® ® ® ® ® ® ® L ® PICO®II Fuses PICO®II Fuses MOUNTING TYPE: Molded Base Molded Base Molded Base Molded Base 1 FUSE TYPE: 2AG 5 x 20mm 3AG 1/2" long Midget, CC

2.35" MAX. .25" .10" .046" TYP. .45" REF. REF. 2.19" 1" 10A MAX. .60" .35" X .110" .53" REF. .032" .23" REF. X .25" .18" 520 DIA. .23" 1.46" 1.44" REF. 3.00" REF. .50" 45¡ REF. .54" .016"

ª ¨ Heavy-Duty Special Type For LT-5 For ATO .92" 1.250" .783" .81" REF . REF . Bayonet 150 Series Fuses Fuses REF. 155 Series 280 Series 155 Series 3AG Screw 1/4"Ð 13/16" Diam. 1/4" Diam. Fuses 1/4" Diam. Fuses Various Diam. Terminal Fuses 101 Series Fuses MOUNTING TYPE: In-Line Mount In-Line Mount PC Board Mount In-Line Mount ® FUSE TYPE: Low Voltage 3AG, SFE 2AG, 5x20mm LT-5 (662 – 665 Types) ATO Fuses ® MOUNTING TYPE: Laminated Base Rivet/Eyelet Mount Rivet/Eyelet Mount Solder Type P.C.Board P.C.Board ® 09.5 FUSE TYPE: 3AG 3AG, Midget, NEC 1-60 amp 3AG Traditional Bowed Tab ATO Fuse 2AG or 5mm

4.3

45° 5mm, Auto. Low Profile (2) 5mm Insertion Type 2.08" 1.46" 8.5 .69" .42" DIA. 1.20" .75" 1.84"

17 18 FUSEHOLDERS FUSEHOLDERS Traditional RF Shielded Watertight For ATO¨ For MINI¨ For MINI¨ SMF Omni-Blok¨ 342 Series 282 Series 342 Series Fuses Fuses Fuses Fuse Block 445 Series 153 Series 153 Series 154 Series

2.35" MAX. .25" .10" .046" TYP. .45" REF. REF. 2.19" 1" 10A MAX. .60" .35" X .110" .53" REF. .032" .23" REF. X .25" .18" 520 DIA. .23" 1.46" 1.44" REF. 3.00" REF. .50" 45¡ REF. .54" .016"

4.3

45° 5mm, Auto. Low Profile (2) 5mm Insertion Type 2.08" 1.46" 8.5 .69" .42" DIA. 1.20" .75" 1.84"

17 18 OVERVOLTAGE SUPPRESSION FACTS Transient Threats – Characteristics of Transient Voltage Inductive Load Switching Figure 3, bottom left, shows a transient What Are Transients? Transient Voltage Spikes Device Type Vulnerability (volts) Scenarios The switching of inductive loads generates which is the result of stored energy within high energy transients which increase in the alternator of an automobile charging Voltage Transients are defined as short Transient voltage spikes generally exhibit a VMOS 30-1800 magnitude with increasingly heavy loads. system. A similar transient can also occur as duration surges of electrical energy and "double exponential" wave form, shown in MOSFET 100-200 ESD (Electrostatic Discharge) GaAsFET 100-300 When the inductive load is switched off, a result of transients caused by other DC are the result of the sudden release of Figure 1 for lightning and figure 2 for ESD. Electrostatic discharge is characterised by EPROM 100 the collapsing magnetic field is converted motors in a vehicle. For Example, DC energy that was previously stored, or The exponential rise time of lightning is in very fast rise times and very high peak JFET 140-7000 into electrical energy which takes the form motors power amenities such as power induced by other means, such as heavy the range 1.2µsec to 10µsec (essentially voltages and currents.This energy is the CMOS 250-3000 of a double exponential transient. locks, seats and windows.These various inductive loads or lightning strikes. In 10% to 90%) and the duration is in the result of an imbalance of positive and Schottky Diodes 300-2500 Depending on the source, these transients applications of a DC motor can produce electrical or electronic circuits, this energy range of 50µsec to 1000µsec (50% of negative charges between objects. Bipolar Transistors 380-7000 can be as large as hundreds of volts and transients that are just as harmful to the can be released in a predictable manner peak values). ESD on the other hand, SCR 680-1000 hundreds of Amps, with duration times of sensitive electronic components as transients via controlled switching actions, or is a much shorter duration event.The Below are some examples of the voltages 400 milliseconds. created in the external environment. randomly induced into a circuit from rise time has been characterized at Table 2. Range of device vulnerability. which can be generated, depending on the external sources. less than 1.0ns.The overall duration is relative humidity (RH): Typical sources of inductive transients are: Lightning Induced Transients approximately 100ns. Even though a direct strike is clearly Repeatable transients are frequently • Walking across a carpet: • Generator Why are Transients destructive, transients induced by lightning caused by the operation of motors, 35kV @ RH = 20%; 1.5kV @ RH = 65% of Increasing Concern? • Motor are not the result of direct a direct strike. generators, or the switching of reactive 100 • Walking acrss a vinyl floor: 90 When a lightning strike occurs, the event circuit components. Random transients, on Component miniaturization has resulted in • Relay % 12kV @ RH = 20%; 250V @ RH = 65% creates a magnetic field which can induce the other hand, are often caused by increased sensitivity; microprocessors for • Transformer transients of large magnitude in nearby Lightning (Figure 1) and Electrostatic I30 example, have conductive paths which are • Worker at a bench: 6kV @ RH = 20%; 100V @ RH = 65% electrical cables. Discharge (ESD) (Figure 2). Lightning and unable to handle high currents from ESD These examples are extremely common in ESD generally occur unpredictably, and I60 transients. Such components operate at very Current (I) % • Vinyl envelopes: electrical and electronic systems. Because Figure 4, below shows how a cloud-to- may require elaborate monitoring to be low voltages, so voltage disturbances must 7kV @ RH = 20%; 600V @ RH = 65% the sizes of the loads vary according to cloud strike will effect not only overhead accurately measured, especially if induced be controlled to prevent device interruption 30n • Poly bag picked up from desk: the application, the wave shape, duration, cables, but also buried cables. Even a strike at the circuit board level. Numerous and latent or catastrophic failures. Sensitive 60n 20kV @ RH = 20%; 1.2kV @ RH = 65% peak current and peak voltage are all 1 mile distant (1.6km) will generate 70 electronics standards groups have analyzed devices such as microprocessors are being variables which exist in real world tr = 0.7 to 1.0ns volts in electrical cables. transient voltage occurrences using adopted at an exponential rate. Referring to Table 2 on the previous page, transients. Once these variables can be accepted monitoring or testing methods. Figure 2. ESD Test Waveform Microprocessors are beginning to perform it can be seen how much of a hazard approximated, a suitable suppressor Figure 5, on the following page shows the The key characteristics of several transparent operations never before ESD presents. Figure 2 shows the ESD technology can be selected. effect of a cloud-to-ground strike: the transients are shown below in Table 1. imagined. Everything from home appliances, transient generating effect is far greater. such as dishwashers, to industrial controls waveform as defined in the IEC 61000-4-2 and even toys, have increased the use of test specification. microprocessors to improve functionality and efficiency. V T Vp T1 Vp/2 Vehicles now employ many electronics 90% systems to control the engine, climate, braking and, in some cases, steering VS t1 t systems. Some of the innovations are t2 designed to improve efficiency, but many are safety related, such as ABS brakes and 10 % Figure 1. Lightning Transient Waveform traction control systems. Many of the V t features in appliances and automobiles B VB = 25V to 125V T1 = 5ms to 10ms VB = 14V R = 0.5Ω to 4Ω employ items which present transient T= 40ms to 400ms threats (such as electric motors). Not only is the general environment hostile, but the Figure 3. Automotive Load Dump VOLTAGE CURRENT RISE-TIME DURATION equipment or appliance is also a source of Lighting 25kV 20kA 10µs 1ms threats. For this reason, careful circuit Switching 600V 500A 50µs 500ms design and the correct use of overvoltage EMP 1kV 10A 20ns 1ms protection technology will greatly improve ESD 15kV 30A 1-5ns 100ns the reliability and safety of the end application.Table 2 shows the vulnerability Buried Line Table 1. Examples of transient sources and magnitude of various component technologies. Transient Generated: ¥ 70 V at 1.6km (1 mile) ¥ 10 kV at 150m (160 yards) Figure 4. Cloud-to-Cloud Lightning Strike 19 20 OVERVOLTAGE SUPPRESSION FACTS Transient Threats – Characteristics of Transient Voltage Inductive Load Switching Figure 3, bottom left, shows a transient What Are Transients? Transient Voltage Spikes Device Type Vulnerability (volts) Scenarios The switching of inductive loads generates which is the result of stored energy within high energy transients which increase in the alternator of an automobile charging Voltage Transients are defined as short Transient voltage spikes generally exhibit a VMOS 30-1800 magnitude with increasingly heavy loads. system. A similar transient can also occur as duration surges of electrical energy and "double exponential" wave form, shown in MOSFET 100-200 ESD (Electrostatic Discharge) GaAsFET 100-300 When the inductive load is switched off, a result of transients caused by other DC are the result of the sudden release of Figure 1 for lightning and figure 2 for ESD. Electrostatic discharge is characterised by EPROM 100 the collapsing magnetic field is converted motors in a vehicle. For Example, DC energy that was previously stored, or The exponential rise time of lightning is in very fast rise times and very high peak JFET 140-7000 into electrical energy which takes the form motors power amenities such as power induced by other means, such as heavy the range 1.2µsec to 10µsec (essentially voltages and currents.This energy is the CMOS 250-3000 of a double exponential transient. locks, seats and windows.These various inductive loads or lightning strikes. In 10% to 90%) and the duration is in the result of an imbalance of positive and Schottky Diodes 300-2500 Depending on the source, these transients applications of a DC motor can produce electrical or electronic circuits, this energy range of 50µsec to 1000µsec (50% of negative charges between objects. Bipolar Transistors 380-7000 can be as large as hundreds of volts and transients that are just as harmful to the can be released in a predictable manner peak values). ESD on the other hand, SCR 680-1000 hundreds of Amps, with duration times of sensitive electronic components as transients via controlled switching actions, or is a much shorter duration event.The Below are some examples of the voltages 400 milliseconds. created in the external environment. randomly induced into a circuit from rise time has been characterized at Table 2. Range of device vulnerability. which can be generated, depending on the external sources. less than 1.0ns.The overall duration is relative humidity (RH): Typical sources of inductive transients are: Lightning Induced Transients approximately 100ns. Even though a direct strike is clearly Repeatable transients are frequently • Walking across a carpet: • Generator Why are Transients destructive, transients induced by lightning caused by the operation of motors, 35kV @ RH = 20%; 1.5kV @ RH = 65% of Increasing Concern? • Motor are not the result of direct a direct strike. generators, or the switching of reactive 100 • Walking acrss a vinyl floor: 90 When a lightning strike occurs, the event circuit components. Random transients, on Component miniaturization has resulted in • Relay % 12kV @ RH = 20%; 250V @ RH = 65% creates a magnetic field which can induce the other hand, are often caused by increased sensitivity; microprocessors for • Transformer transients of large magnitude in nearby Lightning (Figure 1) and Electrostatic I30 example, have conductive paths which are • Worker at a bench: 6kV @ RH = 20%; 100V @ RH = 65% electrical cables. Discharge (ESD) (Figure 2). Lightning and unable to handle high currents from ESD These examples are extremely common in ESD generally occur unpredictably, and I60 transients. Such components operate at very Current (I) % • Vinyl envelopes: electrical and electronic systems. Because Figure 4, below shows how a cloud-to- may require elaborate monitoring to be low voltages, so voltage disturbances must 7kV @ RH = 20%; 600V @ RH = 65% the sizes of the loads vary according to cloud strike will effect not only overhead accurately measured, especially if induced be controlled to prevent device interruption 30n • Poly bag picked up from desk: the application, the wave shape, duration, cables, but also buried cables. Even a strike at the circuit board level. Numerous and latent or catastrophic failures. Sensitive 60n 20kV @ RH = 20%; 1.2kV @ RH = 65% peak current and peak voltage are all 1 mile distant (1.6km) will generate 70 electronics standards groups have analyzed devices such as microprocessors are being variables which exist in real world tr = 0.7 to 1.0ns volts in electrical cables. transient voltage occurrences using adopted at an exponential rate. Referring to Table 2 on the previous page, transients. Once these variables can be accepted monitoring or testing methods. Figure 2. ESD Test Waveform Microprocessors are beginning to perform it can be seen how much of a hazard approximated, a suitable suppressor Figure 5, on the following page shows the The key characteristics of several transparent operations never before ESD presents. Figure 2 shows the ESD technology can be selected. effect of a cloud-to-ground strike: the transients are shown below in Table 1. imagined. Everything from home appliances, transient generating effect is far greater. such as dishwashers, to industrial controls waveform as defined in the IEC 61000-4-2 and even toys, have increased the use of test specification. microprocessors to improve functionality and efficiency. V T Vp T1 Vp/2 Vehicles now employ many electronics 90% systems to control the engine, climate, braking and, in some cases, steering VS t1 t systems. Some of the innovations are t2 designed to improve efficiency, but many are safety related, such as ABS brakes and 10 % Figure 1. Lightning Transient Waveform traction control systems. Many of the V t features in appliances and automobiles B VB = 25V to 125V T1 = 5ms to 10ms VB = 14V R = 0.5Ω to 4Ω employ items which present transient T= 40ms to 400ms threats (such as electric motors). Not only is the general environment hostile, but the Figure 3. Automotive Load Dump VOLTAGE CURRENT RISE-TIME DURATION equipment or appliance is also a source of Lighting 25kV 20kA 10µs 1ms threats. For this reason, careful circuit Switching 600V 500A 50µs 500ms design and the correct use of overvoltage EMP 1kV 10A 20ns 1ms protection technology will greatly improve ESD 15kV 30A 1-5ns 100ns the reliability and safety of the end application.Table 2 shows the vulnerability Buried Line Table 1. Examples of transient sources and magnitude of various component technologies. Transient Generated: ¥ 70 V at 1.6km (1 mile) ¥ 10 kV at 150m (160 yards) Figure 4. Cloud-to-Cloud Lightning Strike 19 20 OVERVOLTAGE SUPPRESSION FACTS (cont.) Figure 6, bottom right shows a typical MLV Discrete TVS Diode Deployment of Glossary of Terms The following are more specifically used to describe current waveform for induced Lightning Multilayer Metal Oxide Varistor Silicon Avalanche Diode Technology Protection Devices The following are general terms that apply to the parameters of gas technology devices: disturbances. Ceramic Technology Available in surface mount and axial Typically, suppression devices are used singly all overvoltage technologies in the Littelfuse Dynamic Breakover Available in a wide range of surface leaded packages. Offers protection from in line-to-neutral (Vsupply to Vgnd, Rx to Vgnd, product offering. mount packages. Offers a lower voltage medium to very high energy transients etc.) or line-to-line (tip to ring, etc.) (also referred to as Impulse sparkover) Technological Solutions The maximum breakover voltage for Transient Threats range and enhanced performance and and can be used in wide range of configurations. However, in some cases, Crowbar Device filtering characteristics for applications applications. it is necessary to employ protection The class of suppressors that exhibit a measured on a 100V/µs or 1kV/µs ramp Because of the various types of transients requiring protection from low to medium devices in a cascaded (staged) configuration. "crowbar" characteristic is usally associated rate (whichever is specified). and applications, it is necessary to employ TM energy transients. SiBOD Cascaded solutions exploit the best features with 4-layer NPNP silicon bipolar devices protection devices with different Thyristor Breakover Technology of each technology to ensure the most or gas plasma/GDT devices. Upon reaching DC Breakover characteristics in different applications. ® PulseGuard Available in surface mount, axial leaded comprehensive solution. a threshold or breakover voltage, further (also referred to as DC sparkover) Littelfuse offers the broadest range of Voltage Variable Polymer Technology and TO-220 through hole package options. increase in current flow will cause the The nominal breakover voltage measured circuit protection technologies. Our Available in surface mount and ‘D-Sub Offers protection from medium to high Figure 7, below shows a typical cascaded device to rapidly conduct with only a few on a 100V/s ramp rate. overvoltage protection portfolio includes: connector’ format packages. Specifically energy transients. SiBOD thyristors are environment.With careful design it a volts of forward drop. In essence, the line designed for high data-rate applications specifically designed for transient cascaded solution can be provided in a is momentarily "short-circuited" Holdover Voltage MOVs requiring ESD protection and the lowest suppression in telecom and data single unit or module. throughout the length of the transient. Once the device has switched due to a Metal Oxide Varistors (MOV) possible capacitance. transmission systems. transient, it will stay in this low impedance Ceramic Technology Figure 8, below shows a ‘5 pin’ design, which Operating Temperature Range state until the voltage across it falls below a Available in screw terminal, radial, square TVS Diode Arrays Gas Plasma Protector/ incorporates multiple devices and functions The minimum and maximum ambient specific value, known as the holdover and axial leaded and connections. Offers Silicon Avalanche Diode Technology Gas Discharge Tube into a single device. operating temperature of the circuit in voltage.When selecting one of these medium to very high energy ratings for a Available in surface mount multi-pin Gas Plama Technology which a device will be applied, allowing for devices, it is important to make sure the wide range of applications. packages or CSP (chip scale package) Available in surface mount, axial leaded, other adjacent components which could voltage of the protected system is less than arrays. Designed for applications requiring radial leaded and special packages. effect the surrounding temperature. the holdover voltage value of the protector. Surface mount MOV multiline ESD protection and the lowest The Littelfuse Gas Plasma technology Metal Oxide Varistor (MOV) possible clamp voltage. offers high surge ratings and very low Capacitance On-state Voltage Ceramic Technology capacitance for use in telecommunication The property of a circuit element that (also referred to as Arc Voltage) Available in a wide range of voltage and broadband systems. permits it to store an electrical charge. In The maximum voltage measured across ratings. Offers low to medium energy circuit protection, the capacitance is usually the protector when in it’s low impedance ratings for a variety of applications. measured between input pins and the state (fully switched on). Sometimes specified at a given test current. 100 common terminal, at 1 MHz. 90 Maximum Surge Current Figure 8. ‘5 Pin’ design incorporating Littelfuse GDT,TVS Power Cross Diode and overcurrent protection (if fuse or PTC). A condition where the AC power (also referred to as impulse discharge current) 50 becomes accidentally connected to a The maximum transient surge current the communication line.This may be a metallic protector can handle without degradation connection, or inductively coupled. or destruction. Usually quoted using the industry standard 8x20µs double 10 PERCENT OF PEAK VALUE PERCENT OF PEAK exponential waveform. O1 t TIME t1 Maximum AC Surge Current t2 (also referred to as alternating 100m 11kV Figure 6. 5kA 8/20µS pulse discharge current) The maximum 1km 1100 V AC surge current the protector can handle without degradation or 10km 110 V destruction. Usually quoted using a number of 1 second, 60Hz bursts (often 5 such bursts), with a 3 minute Primary and/or Secondary Tertiary Protection rest period between each burst. Examples in MDF: at Board Level Examples: ¥ MOVs ¥ SiBODTM Thyristors TM Insulation Resistance ¥ TMOV Varistors ¥ Gas Plasma Technology An alternative way of quoting leakage ¥ TVS Diodes ¥ TVS Diodes ¥ Gas Plasma Technology/GDT ¥ TVS Diode Arrays current. It is the effective resistance of the ¥ PulseGuard¨ Suppressors device at a given voltage: the test voltage ¥ Multilayer Varistors divided by the leakage current. A typical Figure 7.Typical staged solution configuration for data or ¥ Surface Mount Varistors value would be given as 1 x 109 ohms. telephone transmission lines in a central office. ¥ MOVs Figure 5. Cloud-to-Ground Lightning Strike ¥ TMOVTM Varistors

21 22 OVERVOLTAGE SUPPRESSION FACTS (cont.) Figure 6, bottom right shows a typical MLV Discrete TVS Diode Deployment of Glossary of Terms The following are more specifically used to describe current waveform for induced Lightning Multilayer Metal Oxide Varistor Silicon Avalanche Diode Technology Protection Devices The following are general terms that apply to the parameters of gas technology devices: disturbances. Ceramic Technology Available in surface mount and axial Typically, suppression devices are used singly all overvoltage technologies in the Littelfuse Dynamic Breakover Available in a wide range of surface leaded packages. Offers protection from in line-to-neutral (Vsupply to Vgnd, Rx to Vgnd, product offering. mount packages. Offers a lower voltage medium to very high energy transients etc.) or line-to-line (tip to ring, etc.) (also referred to as Impulse sparkover) Technological Solutions The maximum breakover voltage for Transient Threats range and enhanced performance and and can be used in wide range of configurations. However, in some cases, Crowbar Device filtering characteristics for applications applications. it is necessary to employ protection The class of suppressors that exhibit a measured on a 100V/µs or 1kV/µs ramp Because of the various types of transients requiring protection from low to medium devices in a cascaded (staged) configuration. "crowbar" characteristic is usally associated rate (whichever is specified). and applications, it is necessary to employ TM energy transients. SiBOD Cascaded solutions exploit the best features with 4-layer NPNP silicon bipolar devices protection devices with different Thyristor Breakover Technology of each technology to ensure the most or gas plasma/GDT devices. Upon reaching DC Breakover characteristics in different applications. ® PulseGuard Available in surface mount, axial leaded comprehensive solution. a threshold or breakover voltage, further (also referred to as DC sparkover) Littelfuse offers the broadest range of Voltage Variable Polymer Technology and TO-220 through hole package options. increase in current flow will cause the The nominal breakover voltage measured circuit protection technologies. Our Available in surface mount and ‘D-Sub Offers protection from medium to high Figure 7, below shows a typical cascaded device to rapidly conduct with only a few on a 100V/s ramp rate. overvoltage protection portfolio includes: connector’ format packages. Specifically energy transients. SiBOD thyristors are environment.With careful design it a volts of forward drop. In essence, the line designed for high data-rate applications specifically designed for transient cascaded solution can be provided in a is momentarily "short-circuited" Holdover Voltage MOVs requiring ESD protection and the lowest suppression in telecom and data single unit or module. throughout the length of the transient. Once the device has switched due to a Metal Oxide Varistors (MOV) possible capacitance. transmission systems. transient, it will stay in this low impedance Ceramic Technology Figure 8, below shows a ‘5 pin’ design, which Operating Temperature Range state until the voltage across it falls below a Available in screw terminal, radial, square TVS Diode Arrays Gas Plasma Protector/ incorporates multiple devices and functions The minimum and maximum ambient specific value, known as the holdover and axial leaded and connections. Offers Silicon Avalanche Diode Technology Gas Discharge Tube into a single device. operating temperature of the circuit in voltage.When selecting one of these medium to very high energy ratings for a Available in surface mount multi-pin Gas Plama Technology which a device will be applied, allowing for devices, it is important to make sure the wide range of applications. packages or CSP (chip scale package) Available in surface mount, axial leaded, other adjacent components which could voltage of the protected system is less than arrays. Designed for applications requiring radial leaded and special packages. effect the surrounding temperature. the holdover voltage value of the protector. Surface mount MOV multiline ESD protection and the lowest The Littelfuse Gas Plasma technology Metal Oxide Varistor (MOV) possible clamp voltage. offers high surge ratings and very low Capacitance On-state Voltage Ceramic Technology capacitance for use in telecommunication The property of a circuit element that (also referred to as Arc Voltage) Available in a wide range of voltage and broadband systems. permits it to store an electrical charge. In The maximum voltage measured across ratings. Offers low to medium energy circuit protection, the capacitance is usually the protector when in it’s low impedance ratings for a variety of applications. measured between input pins and the state (fully switched on). Sometimes specified at a given test current. 100 common terminal, at 1 MHz. 90 Maximum Surge Current Figure 8. ‘5 Pin’ design incorporating Littelfuse GDT,TVS Power Cross Diode and overcurrent protection (if fuse or PTC). A condition where the AC power (also referred to as impulse discharge current) 50 becomes accidentally connected to a The maximum transient surge current the communication line.This may be a metallic protector can handle without degradation connection, or inductively coupled. or destruction. Usually quoted using the industry standard 8x20µs double 10 PERCENT OF PEAK VALUE PERCENT OF PEAK exponential waveform. O1 t TIME t1 Maximum AC Surge Current t2 (also referred to as alternating 100m 11kV Figure 6. 5kA 8/20µS pulse discharge current) The maximum 1km 1100 V AC surge current the protector can handle without degradation or 10km 110 V destruction. Usually quoted using a number of 1 second, 60Hz bursts (often 5 such bursts), with a 3 minute Primary and/or Secondary Tertiary Protection rest period between each burst. Examples in MDF: at Board Level Examples: ¥ MOVs ¥ SiBODTM Thyristors TM Insulation Resistance ¥ TMOV Varistors ¥ Gas Plasma Technology An alternative way of quoting leakage ¥ TVS Diodes ¥ TVS Diodes ¥ Gas Plasma Technology/GDT ¥ TVS Diode Arrays current. It is the effective resistance of the ¥ PulseGuard¨ Suppressors device at a given voltage: the test voltage ¥ Multilayer Varistors divided by the leakage current. A typical Figure 7.Typical staged solution configuration for data or ¥ Surface Mount Varistors value would be given as 1 x 109 ohms. telephone transmission lines in a central office. ¥ MOVs Figure 5. Cloud-to-Ground Lightning Strike ¥ TMOVTM Varistors

21 22 Overvoltage Application Guide OVERVOLTAGE SUPPRESSION FACTS (cont.) Application Examples Circuit Examples Transient Threat Device Family Technology Computers High-speed Interfaces: Failsafe The following are more specifically used to Clamping Voltage (V ) - desktop, laptop, notebook USB 2.0, IEEE 1394, InfiniBand, ESD PGB PulseGuard® C Peripherals RF antenna circuits, Gigabit Ethernet, DVI Polymer Refers to a device which prevents hazards describe the parameters of Silicon (thyristor This is the peak voltage appearing across - scanner, printer, monitor, disk drive External Broadband hardware Medium-speed Interfaces: sSP05x TVS diode due to thermal run-away. The device is a based) breakover devices (SiBOD thyristor): the MOV when measured at conditions of - modem, set top box USB 1.1, RS 485, Ethernet, video ESD, EMI, EFT SP72x SCR/Rail clamp Network hardware MHS, ML, MLE, MLN MLV thermal sensitive switch which operates at a specified pulse current amplitude and - switch, router, hub, repeater SPUSB1 TVS/filter predetermined temperature, shorting the Maximum Breakover Voltage (V ) specified waveform (8x20µs). Digital camera/camcorder Low-speed Interfaces: BO Handheld portables Audio, RS 232, IEEE 1284, push buttons, terminals of the protection device (normally The voltage measured across the device - PDA, cell phone, cordless phone, GPS key pads, switches Lightning LCE, SA SAD TM Video equipment gas plasma device, sometimes SiBOD as it makes a transition from its avalanche Power Dissipation Ratings - HDTV, DVD, VCR, set top box Alarm systems ESD, EMI, EFT ML, MLE MLV thyristor) providing a low resistance path. A mode to the fully conductive, low When transients occur in rapid succession, - security, fire failsafe is used in conjunction with overcurrent impedance state ( V ). the average power dissipation is the Metering systems Power Inputs: CH, MA, ZA, RA, UltraMOV MOV T Medical equipment 120/240 VAC, up to 120 VDC Lightning SA, P6KE, 1.5PKE SAD protection devices to protect against the energy (watt-seconds) per pulse, times the Lighting ballast Switching Transients SMBJ, 1KSMBJ SAD Remote sensors/transducers consequences of power cross conditions. Switching Voltage (VS) number of pulses per second. Power ESD, EMI, EFT ICTE/MPTE SAD The same as VBO. developed in this fashion must be within Electronics Low/Medium Voltage Avionics/Military Electronics Power and System Inputs Lightning and System Transients 1N56/1N60, 5KP/SLD SAD The following are more specifically the specifications shown on the Device Hi-Rel MOVs MOV (but not exclusively) used to describe the TMOV™, UltraMOV™ MOV Forward Voltage Drop (VT) Ratings and Characteristics table for the Uninterruptible Power Supply (UPS) EFT, Lightning LA, C-III, ZA, MOV parameters of silicon avalanche diodes The voltage measured across the device specific device. 5KP, 15KP, AK6, AK10 SAD (SAD) and TVS Arrays: UltraMOV, LA, TMOV MOV when in the fully switched on state and Power Supply EFT, Lightning, ZA, HA, CH MOV conducting a specified current level (IT) Voltage Clamping Device Commutative Spikes 5KP, 15KP, AK6, AK10 SAD TVS diode A clamping device, such as an MOV, refers SL1002A, SL1003A, SL1011A GDT TVS is an abbreviation for transient voltage Consumer Electronics EFT, Lightning UltraMOV, LA, ZA, CH, TMOV MOV Holding current (IN) to a characteristic in which the effective 1.5KE, 5KP SAD suppressor. Devices which are termed as Once a SiBOD thyristor has switched to V , resistance changes from a high to low AC line protection Power Meter Lightning TMOV, UltraMOV, C-III MOV T 5KP SAD TVS diodes (or diode arrays) typically use a certain level of current through the device state as a function of applied voltage. In its Silicon Avalanche Diode technology. AC Power Taps EFT, Lightning UltraMOV, LA, MOV is needed for it to maintain this condition; conductive state, a voltage divider action is HA, HB34 MOV this is specified as the Minimum Holding established between the clamping device AC Panels EFT, Lightning, UltraMOV, C-III, MOV Reverse Standoff Voltage (V ) Commutative Spikes HA, HB34, DA/DB, MOV R Current. If the current is not reduced below and the source impedance of the circuit. 5KP, 15KP, 8K6, 8K10 SAD In the case of a uni-directional TVS diode, this level, the device with remain ‘latched’. Clamping devices are generally "dissipative" Power Mains Protection AC Appliance Control EFT, Lightning TMOV, UltraMOV, LA, CH MOV this is the maximum peak voltage that may devices, converting much of the transient SMBJ, P6KE, 1.5KE SAD be applied in the ‘blocking direction’ with TVSS Protection Modules Lightning TMOV, HA, HB34, UltraMOV MOV The following are more specifically used to electrical energy to heat. 5KP, 15KP, AK6, AK10 SAD no significant current flow. In the case of a describe the parameters of Metal Oxide TVSS devices SL1011A, SL1021A GDT bi-directional transient, it applies in either Varistors (MOV): Circuit Breakers EFT, Lightning, Commutative Spikes UltraMOV, LA, ZA MOV direction. It is the same definition as Robotics EFT, Lightning, Commutative Spikes, UltraMOV, CH, LA, C-III, ZA MOV Maximum Off-state Voltage and Maximum Maximum Non-Repetitive Surge Inductive Load Switching SMBJ, P6KE, 1.5KE, 5KP, 15KP SAD Working Voltage. Large Motors, Pumps, Compressors EFT, Lightning, Commutative Spikes, UltraMOV, CH, HA, HB34, BA/BB MOV Current (ITM) Inductive Load Switching DA/DB, PA, RA MOV This is the maximum peak current which High energy systems Motor Drives EFT, Lightning, Commutative Spikes, UltraMOV, TMOV, LA, C-III, RA, CH MOV Breakdown Voltage (VBR) may be applied for an 8x20µs impulse, Inductive Load Switching SMBJ, P6KE, 1.5KE, 5KP, 15KP SAD Breakdown voltage measured at a specified with rated line voltage also applied, AC Distribution EFT, Lightning, Commutative Spikes, UltraMOV, C-III, HA, HB34, BA/BB, DA/DB MOV DC test current, typically 1mA. Usually a without causing greater than 10% shift in Inductive Load Switching 5KP, 15KP, AK6, AK10 SAD High Current Relays EFT, Lightning, Commutative Spikes UltraMOV, C-III, HA, HB34, BA/BB, DA/DB MOV minimum and maximum is specified. nominal voltage. Industrial Environment Customer Premise Equipment High-Speed Data Interfaces: ESD PGB PulseGuard® - Fax machine - SLIC hardware USB 2.0, IEEE 1394, RF antenna circuits Polymer Maximum peak pulse current (IPP) Maximum Non-Repetitive Surge - Answering machine - Public phone Maximum pulse current which can be - xDSL gateway - Cellular phone Medium/low-speed Data Interfaces: ESD, EMI, EFT SP05x, SP72x, SPUSB1, TVS diode Energy (WTM) - Dial-up modem - Cordless phone USB 1.1, Ethernet, RS 232 ML, MLE, MLN, MHS MLV applied repetitively. Usually a 10x1000µs - Set top box - Phone Line Protector This is the maximum rated transient - T1/E1/ISDN termination - LAN protection module Telecom Interface (secondary): Lightning SMT50, SMT100, SMTBJ, T10A/B/C, SiBOD™ double exponential waveform, but can also energy which may be dissipated for a equipment Tip/Ring Circuits CRxxxxSA/SB/SC Thyristor be 8x20µs, if stated. single current pulse at a specified impulse Power Inputs: Lightning P6KE, 1.5KE, SAD 120/240 VAC, up to 120 VDC CH, ZA, UltraMOV MOV and duration (2µs), with the rated VRMS Interface Equipment Conversion Equipment Maximum Clamping Voltage (VCor VCI) applied, without causing device failure. - PBX systems - Cellular base station Telecom Interface (primary): Lightning SL1002, SL1003, Glass Plasma Maximum voltage which can be measured - Internet gateways - Satellite base station Tip/Ring Circuits SL1011, SL1021, SL1026 OV Protector - DSLAM equipment - Microwave base station

across the protector when subjected to Telecom/Datacom Nominal Voltage (VN(DC)) Central Office Equipment Telecom Interface (secondary): Lightning SMT50, SMT100, SMTBJ, T10A/B/C SiBOD™ the Maximum Peak Pulse Current. This is the voltage at which the device - Interexchange carrier Tip/Ring Circuits CRxxxxSA/SB/SC Thyristor - Local exchange carrier changes from the off state to the on state - Mobile telephone switch , Peak Pulse Power (P ) - Repeater/node Power Inputs: Lightning P6KE, 1.5KE SAD PP and enters its conduction mode of - Railroad signaling 120/240 VAC, up to 120 VDC CH, ZA, UltraMOV MOV Expressed in Watts or Kilowatts, for a 1ms operation.This voltage is characterized at exponential transient (see fig. 1, pg. 19) it Engine Control Module the 1mA point and has specified minimum Multimedia systems is IPP multiplied by VCL. Body/Chassis Control - Radio/satellite tuner High-Speed Interfaces: ESD PGB PulseGuard® and maximum voltage ratings. - Body controller - CD/cassette players USB 2.0, IEEE 1394 Polymer - Antilock braking system - DVD/VCR players - Steering sensor - MP3 players - Illumination control - Data interface buses Medium/Low-Speed Interfaces: ESD, EMI SP05x, SP72x, SPUSB1, TVS diode - Instrument cluster USB 1.1, CAN ML, MLE, MLN, MHS MLV - Air bag module Telematics systems - Window control module - Wireless communication Power Inputs: Load Dump AUML, MLV - Wiper module - GPS receiver Up to 42 VDC and Inductive Switching P6K, P6SMBJ, 5KP SAD 23 - Door lock module - Navigation system 1KSMBJ, SLD SAD Automotive Electronics - Security system CH, ZA MOV 24 Overvoltage Application Guide OVERVOLTAGE SUPPRESSION FACTS (cont.) Application Examples Circuit Examples Transient Threat Device Family Technology Computers High-speed Interfaces: Failsafe The following are more specifically used to Clamping Voltage (V ) - desktop, laptop, notebook USB 2.0, IEEE 1394, InfiniBand, ESD PGB PulseGuard® C Peripherals RF antenna circuits, Gigabit Ethernet, DVI Polymer Refers to a device which prevents hazards describe the parameters of Silicon (thyristor This is the peak voltage appearing across - scanner, printer, monitor, disk drive External Broadband hardware Medium-speed Interfaces: sSP05x TVS diode due to thermal run-away. The device is a based) breakover devices (SiBOD thyristor): the MOV when measured at conditions of - modem, set top box USB 1.1, RS 485, Ethernet, video ESD, EMI, EFT SP72x SCR/Rail clamp Network hardware MHS, ML, MLE, MLN MLV thermal sensitive switch which operates at a specified pulse current amplitude and - switch, router, hub, repeater SPUSB1 TVS/filter predetermined temperature, shorting the Maximum Breakover Voltage (V ) specified waveform (8x20µs). Digital camera/camcorder Low-speed Interfaces: BO Handheld portables Audio, RS 232, IEEE 1284, push buttons, terminals of the protection device (normally The voltage measured across the device - PDA, cell phone, cordless phone, GPS key pads, switches Lightning LCE, SA SAD TM Video equipment gas plasma device, sometimes SiBOD as it makes a transition from its avalanche Power Dissipation Ratings - HDTV, DVD, VCR, set top box Alarm systems ESD, EMI, EFT ML, MLE MLV thyristor) providing a low resistance path. A mode to the fully conductive, low When transients occur in rapid succession, - security, fire failsafe is used in conjunction with overcurrent impedance state ( V ). the average power dissipation is the Metering systems Power Inputs: CH, MA, ZA, RA, UltraMOV MOV T Medical equipment 120/240 VAC, up to 120 VDC Lightning SA, P6KE, 1.5PKE SAD protection devices to protect against the energy (watt-seconds) per pulse, times the Lighting ballast Switching Transients SMBJ, 1KSMBJ SAD Remote sensors/transducers consequences of power cross conditions. Switching Voltage (VS) number of pulses per second. Power ESD, EMI, EFT ICTE/MPTE SAD The same as VBO. developed in this fashion must be within Electronics Low/Medium Voltage Avionics/Military Electronics Power and System Inputs Lightning and System Transients 1N56/1N60, 5KP/SLD SAD The following are more specifically the specifications shown on the Device Hi-Rel MOVs MOV (but not exclusively) used to describe the TMOV™, UltraMOV™ MOV Forward Voltage Drop (VT) Ratings and Characteristics table for the Uninterruptible Power Supply (UPS) EFT, Lightning LA, C-III, ZA, MOV parameters of silicon avalanche diodes The voltage measured across the device specific device. 5KP, 15KP, AK6, AK10 SAD (SAD) and TVS Arrays: UltraMOV, LA, TMOV MOV when in the fully switched on state and Power Supply EFT, Lightning, ZA, HA, CH MOV conducting a specified current level (IT) Voltage Clamping Device Commutative Spikes 5KP, 15KP, AK6, AK10 SAD TVS diode A clamping device, such as an MOV, refers SL1002A, SL1003A, SL1011A GDT TVS is an abbreviation for transient voltage Consumer Electronics EFT, Lightning UltraMOV, LA, ZA, CH, TMOV MOV Holding current (IN) to a characteristic in which the effective 1.5KE, 5KP SAD suppressor. Devices which are termed as Once a SiBOD thyristor has switched to V , resistance changes from a high to low AC line protection Power Meter Lightning TMOV, UltraMOV, C-III MOV T 5KP SAD TVS diodes (or diode arrays) typically use a certain level of current through the device state as a function of applied voltage. In its Silicon Avalanche Diode technology. AC Power Taps EFT, Lightning UltraMOV, LA, MOV is needed for it to maintain this condition; conductive state, a voltage divider action is HA, HB34 MOV this is specified as the Minimum Holding established between the clamping device AC Panels EFT, Lightning, UltraMOV, C-III, MOV Reverse Standoff Voltage (V ) Commutative Spikes HA, HB34, DA/DB, MOV R Current. If the current is not reduced below and the source impedance of the circuit. 5KP, 15KP, 8K6, 8K10 SAD In the case of a uni-directional TVS diode, this level, the device with remain ‘latched’. Clamping devices are generally "dissipative" Power Mains Protection AC Appliance Control EFT, Lightning TMOV, UltraMOV, LA, CH MOV this is the maximum peak voltage that may devices, converting much of the transient SMBJ, P6KE, 1.5KE SAD be applied in the ‘blocking direction’ with TVSS Protection Modules Lightning TMOV, HA, HB34, UltraMOV MOV The following are more specifically used to electrical energy to heat. 5KP, 15KP, AK6, AK10 SAD no significant current flow. In the case of a describe the parameters of Metal Oxide TVSS devices SL1011A, SL1021A GDT bi-directional transient, it applies in either Varistors (MOV): Circuit Breakers EFT, Lightning, Commutative Spikes UltraMOV, LA, ZA MOV direction. It is the same definition as Robotics EFT, Lightning, Commutative Spikes, UltraMOV, CH, LA, C-III, ZA MOV Maximum Off-state Voltage and Maximum Maximum Non-Repetitive Surge Inductive Load Switching SMBJ, P6KE, 1.5KE, 5KP, 15KP SAD Working Voltage. Large Motors, Pumps, Compressors EFT, Lightning, Commutative Spikes, UltraMOV, CH, HA, HB34, BA/BB MOV Current (ITM) Inductive Load Switching DA/DB, PA, RA MOV This is the maximum peak current which High energy systems Motor Drives EFT, Lightning, Commutative Spikes, UltraMOV, TMOV, LA, C-III, RA, CH MOV Breakdown Voltage (VBR) may be applied for an 8x20µs impulse, Inductive Load Switching SMBJ, P6KE, 1.5KE, 5KP, 15KP SAD Breakdown voltage measured at a specified with rated line voltage also applied, AC Distribution EFT, Lightning, Commutative Spikes, UltraMOV, C-III, HA, HB34, BA/BB, DA/DB MOV DC test current, typically 1mA. Usually a without causing greater than 10% shift in Inductive Load Switching 5KP, 15KP, AK6, AK10 SAD High Current Relays EFT, Lightning, Commutative Spikes UltraMOV, C-III, HA, HB34, BA/BB, DA/DB MOV minimum and maximum is specified. nominal voltage. Industrial Environment Customer Premise Equipment High-Speed Data Interfaces: ESD PGB PulseGuard® - Fax machine - SLIC hardware USB 2.0, IEEE 1394, RF antenna circuits Polymer Maximum peak pulse current (IPP) Maximum Non-Repetitive Surge - Answering machine - Public phone Maximum pulse current which can be - xDSL gateway - Cellular phone Medium/low-speed Data Interfaces: ESD, EMI, EFT SP05x, SP72x, SPUSB1, TVS diode Energy (WTM) - Dial-up modem - Cordless phone USB 1.1, Ethernet, RS 232 ML, MLE, MLN, MHS MLV applied repetitively. Usually a 10x1000µs - Set top box - Phone Line Protector This is the maximum rated transient - T1/E1/ISDN termination - LAN protection module Telecom Interface (secondary): Lightning SMT50, SMT100, SMTBJ, T10A/B/C, SiBOD™ double exponential waveform, but can also energy which may be dissipated for a equipment Tip/Ring Circuits CRxxxxSA/SB/SC Thyristor be 8x20µs, if stated. single current pulse at a specified impulse Power Inputs: Lightning P6KE, 1.5KE, SAD 120/240 VAC, up to 120 VDC CH, ZA, UltraMOV MOV and duration (2µs), with the rated VRMS Interface Equipment Conversion Equipment Maximum Clamping Voltage (VCor VCI) applied, without causing device failure. - PBX systems - Cellular base station Telecom Interface (primary): Lightning SL1002, SL1003, Glass Plasma Maximum voltage which can be measured - Internet gateways - Satellite base station Tip/Ring Circuits SL1011, SL1021, SL1026 OV Protector - DSLAM equipment - Microwave base station

Peak Energy ––––– Range (J) 0.1-52 0.4-160 11-360 45-210 12.5-400 50-273 70-250 200-1050 270-1050 270-1050 450-10000 270-1050 200-10000 1-23 0.06-1.7

TVS Diode Selection Guide Temperature Range (Deg.C) -55 – +85 -55 – +125 -55 – +85 -55 – +85 -55 – +85 -55 – +85 -55 – +85 -55 – +85 -55 – +85 -55 – +85 -55 – +85 -55 – +85 -55 – +85 -55 – +125 -55 – +125 -55 – +85 PP Power Range Medium High Very High Lines Protected 1 1111 1111 1 11111 1 Series Name SA P6KE SMBJ P6SMBJ 1KSMBJ 1.5KE ICTE/MPTE 1N56/1N60 5KP SLD 15KP AK6 AK10s Mount/Form Radial Radial Radial Radial Radial Industrial Industrial Bare Bare Surface Surface Axial Technology Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Silicon Packaged Packaged Packaged Packaged Type Avalanche Avalanche Avalanche Avalanche Avalanche Avalanche Avalanche Avalanche Avalanche Avalanche Avalanche Avalanche Avalanche Factor Leaded Leaded Leaded Leaded Leaded Packaged Package Disc Disc Mount Mount Leaded Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Disc Size 5, 7, 10, 7,10,14 7,10,14 32, 40 & ––––– ––––– Operating (MOV) 14, 20mm 8,16,22mm 20mm 14,20mm 20mm 14,20mm 20mm 32,40mm 34mm 40mm 60mm 34mm 60mm 3mm Temperature -55 to +150 -55 to +150 -55 to +150 -55 to +150 -55 to +150 -55 to +150 -55 to +150 -55 to +150 -55 to +150 -55 to +150 -55 to +150 -55 to +150 -55 to +150 Package Agency UL,VDE UL,CSA UL,CSA UL,CSA UL,CSA UL UL&CSA UL&CSA UL&CSA UL UL ––––– ––––– UL ––––– ––––– Type DO 15 axial DO 15 axial DO 214 AA DO 214 AA DO 214 AA axial & pill axial DO13 metal axial & pill axial axial & pill axial axial Approvals &VDE &VDE &VDE & pill Mounting Method through-hole through-hole through-hole through-hole through-hole * Not an applicable parameter for this technology ** Not an applicable parameter for Crowbar devices through-hole or SMT (pill) SMT SMT SMT or SMT (pill) through-hole through-hole or SMT (pill) or SMT (pill) or SMT (pill) through-hole through-hole Reverse Standoff (working) Voltage 5.0-170 5.5-376 5.0-188 5.5-185 5.5-160 5.5-376 5.0-45 5.5-185 5.0-180 5.0-30 17-240 43-380 43-380 Peak Pulse ESD Suppressor Selection Guide Power Range Littelfuse manufacturers three different surface mount product families for ESD suppression. Each technology provides distinct attributes for compatibility to specific circuit requirements. (based on 10/100µs 2,200 based on 500W 600W 600W 600W 1,000W 1,500W 1,500W 1,500W 5,000W 15,000W NA NA 1. Review the circuit requirements or parameters from the left hand column and compare them to the Littelfuse product offerings shown. pulse unless 100µs/150ms pulse 2. Refer to Littelfuse data sheets and application notes for complete technical information. stated otherwise) Peak Pulse Current PulseGuard® (8x20µs) NA NA NA NA NA NA NA NA NA NA NA 6,000 Amps 10,000 Amps Suppressors Silicon Protection Arrays Multilayer Varistors Surface Chip Scale Mount Package (CSP) Surface Mount Surface Mount Series Name PGB SP05X SP72X SP05X SP05X SP05X SPUSB1 ML MLE MLN MHS TM TVS Silicon TVS Rail Rail Clamp USB Port Terminator SiBOD Thyristor Selection Guide Technology Type MLV MLV MLV MLV VVM Avalanche SCR/Diode Avalanche Clamp w/ Avalanche (w/ESD Suppression ZnO ZnO ZnO ZnO Diode Diode Diode and EMI Filter) Series Name TO-220 CRxxx2 TO-220 CRxxx3 CRxxxx SMT 50 SMT 100 SMTBJ T10A T10B T10C 0-120VDC Working Voltage 0-24VDC 0-5.5VDC 0-30VDC 0-5.5VDC 0-5.5VDC 0-5.5VDC 0-5.5VDC 0-18VDC 0-18VDC 0-42VDC Type AA AB AC AA AB AC SA SB SC A B range by type Technology Type Silicon Thyristors Silicon Thyristors Silicon Silicon Silicon Silicon Silicon Silicon Thyristors Silicon Silicon Silicon DIP, SOIC SC70 (2,4,5), S0T143 (2), Thyristors Thyristors Thyristors Thyristors Thyristors Thyristors Thyristors Thyristors (6, 14) SOT23 (2,4,5), MSOP-8 (6), MSOP-8 (6) SC70-6 Operating Junction Array Package SOT23 (2), CSP SOT23 SOT143 (3), SOIC-8 (6), SOIC-8 (6), (3) No No 1206 No Temperature Range (No. of Lines) 0805 (4) (4, 8, 16) (4) TSSOP-8 (4), QSOP-24(18) QSOP-24(1,8) (4) (deg C) -40 to +150 -40 to +150 -40 to +150 -40 to +150 -40 to +150 -40 to +150 -40 to +150 -40 to +150 -40 to +150 -40 to +150 -40 to +150 MSOP-8 (6) Storage Temperature Range (deg C) -55 to +175 -55 to +175 -55 to +175 -55 to +175 -55 to +175 -55 to +175 -55 to +175 -55 to +175 -55 to +175 -55 to +175 -55 to +175 Single Line Package 0402, 0603 No No No No No No 0402-1210 0402-1206 ––––– 0402 Package Type Modified TO-220 (two die) Modified TO-220 (three die) DO-214AA -DO-214AA -DO-214AA DO-214AA DO-214AA DO-214AA DO-15 Axial DO-15 Axial 3-T Typical Device Capacitance 0.05pF 39pF 3-5pF 30pF 3-7pF 3-7pF 47pF 40-6000pF 40-1700pF 45-430pF 3-12pF Mounting Method through-hole through-hole SMT SMT SMT SMT SMT SMT through-hole through-hole through-hole Leakage Current <1nA <10µA <20µA <10µA <1µA <1µA <100nA <5µA <10µA <2µA <5µA Reverse Standoff Rated Immunity to Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes (working) Voltage 25-275 130-300 15-320 15-320 15-320 62-270 62-270 50-200 80-243 62-230 70-240 IEC 61000-4-2 level 4 Peak Pulse Rating: Also Rated for EFT or No TBD Yes TBD TBD TBD TBD Yes Yes Yes Yes • 2x10µs 500A 500A Lightning Wave • 10x160µs 100A 150A 100A 150A 100A 150A 200A • 10x560µs 50A 100A 50A 100A 50A 100A 100A Bidirectional (transients Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes of either polarity) • 10x1000µs 100A 100A 45A 80A 100A 50A 100A 50A 100A 100A 100A • 8X20µs 100A 250A 150A 250A 150A 100A 250A Performs Low Pass Filtering – – – – – – Yes Yes Yes Yes Yes 55A@50HZ or ITSM 20A 30A 60A 20A 30A 60A 20A 30A 60A 30A 60A@60HZ 30A 50A 30A 50A

25 26 OVERVOLTAGE SUPPRESSION FACTS (cont.) Gas Plasma OVP/GDT Selection Guide Ceramic Products Selection Guide Family name OMEGA BETA ALPHA DELTA Performance Level Standard High Ultra High Metal Oxide Varistors (MOV) Series Name SL1012A SL1024A SL1011A SL1011B SL1021A SL1021B SL1002A SL1003A SL1122A SL1221 SL1026 Technology Type Gas Plasma(GDT) Gas Plasma(GDT) Gas Plasma(GDT) Gas Plasma (GDT) Gas Plasma(GDT) Gas Plasma(GDT) Gas Plasma(GDT) Gas Plasma(GDT) Gas Plasma(GDT) Gas Plasma(GDT) Gas Plasma(GDT) Surface Axial Radial Leaded Packaged Bare Disc Mount Leaded Temperature Range -55 to +150 -55 to +150 -55 to +150 -55 to +150 -55 to +150 -55 to +150 -55 to +150 -55 to +150 -55 to +150 -55 to +150 -55 to +150 Package Type 2 Terminal, 3 Terminal, Core 2 Terminal, 2 Terminal, 3 Terminal, Core 3 Terminal, Core 2 Terminal, 3 Terminal, 3 Terminal, 3 Terminal, 3 Terminal, Series Name ZA RA LA C-III UltraMOVTM TMOVTM/iTMOVTM PA HA HB34 DA/DB BA/BB NA CA CH AUML MA Button and axial (no pins) Button and Button and (no pins) (no pins) Button and Radial and SAD/GP Hybrid radial leads Varistor Varistor and radial leads axial leads axial leads and radial leads and radial leads surface mount surface mount radial leads Mounting Method through-hole through-hole through-hole through-hole through-hole through-hole SMT through-hole through-hole through-hole clip mounted Technology Zinc Zinc Zinc Zinc Zinc Zinc Zinc Zinc Zinc Zinc Zinc Zinc Zinc Zinc Multilayer Zinc or clip mount or clip mount or clip mount SMT Type Oxide Oxide Oxide Oxide Oxide Oxide Oxide Oxide Oxide Oxide Oxide Oxide Oxide Oxide Zinc Oxide Oxide DC Breakover Voltage 90 -350 90 - 500 145 -600 145 -600 200 - 500 200 - 500 90 -350 90 -350 90 - 450 200 275-700 Operating AC ––––– AC Surge Rating 5A 10A* 5A 10A 10A* 20A* 5A 10A* 10A* 10A* 40A* Voltage Range 4-460 4-275 130-1000 130-320 130-625 130-320 130-660 130-750 130-750 130-750 130-2800 130-750 130-2800 14-275 9-264 Peak Pulse Current (8x20µs) 5,000A 10,000A* 5,000A 10,000A 10,000A* 20,000A* 5,000A 10,000A* 10,000A* 10,000A* 80,000A* Operating DC Voltage Range 5.5-615 5.5-369 175-1200 ––––– 170-825 170-420 175-850 175-970 175-970 175-970 175-3500 175-970 175-3500 18-369 18 18-365 Max Capacitance 1.5pF 1.5pF 1.5pF 1.5pF 1.5pF 1.5pF 1pF 1pF 100-200pF 1.5pF 2.5pF Peak Current 1,200- 6,000- 1,750- 6,000- 25,000 50,000 20,000 * total current through centre (ground) terminal Range (A)** 50-6,500 100-6,500 6,500 9,000 10,000 10,000 6,500 40,000 40,000 40,000 70,000 40,000 70,000 250-500 20 40-100

Peak Energy ––––– Range (J) 0.1-52 0.4-160 11-360 45-210 12.5-400 50-273 70-250 200-1050 270-1050 270-1050 450-10000 270-1050 200-10000 1-23 0.06-1.7

25 26 OVERVOLTAGE SUPPRESSION PRODUCTS SILCON PROTECTION DEVICES ¨ PGB0010402 PGB0010603 PGB002ST23 PGB0040805 Through-hole NEW Through-hole NEW Through-hole NEW Through-hole NEW Surface Mount NEW PulseGuard TM TM TM Polymeric ESD Suppressors-PGB Series NEW NEW SiBOD Thyristor SiBOD Thyristor SiBOD Thyristor TVS Diode TVS Diode 1.60 2.24 1.27 T10A, T10B Series TO-220 Series T10 C Series SA, P6KE, 1.5KE, 5KP, SMBJ, P6SMBJ, 1KSMBJ 1.04 (0.063") (0.088") (0.050") (0.041") + 15KP, FSLD, SLD Series Series OPERATING VOLTAGE: 0-24VDC 0.44 0.81 (0.037") 2.03 45A@15kV 0.51 + ¨ ¨ ¨ ¨ ¨ PEAK CURRENT: (0.032") 2.032 2.997 (0.080") (0.020") (0.080") (0.118") CAPACITANCE: 0.05pF@1MHz 0.30 <1.0nA (0.012") MAX OPERATING LEAKAGE CURRENT: 0.457 0.41 (0.018") 0.66 (0.016") VOLTAGE: 32.0 to 243.0 25.0 to 300.0 70.0 to 240.0 5.0 to 380.0 5.0 to 188.0 OFFSTATE (0.026") RESISTANCE: 10MΩ 0.381 0.66 PEAK PULSE 0.18 (0.015") 0.76 (.026") CLAMPING: 150V,TYPICAL@8KV (0.007") (.030") CURRENT: 50A to 100A 50A to 500A 50A to 100A N/A N/A LINES PROTECTED: 1-line 1-line 2-lines 4-lines FORM FACTOR: Axial leaded Modified to 220 3 pin ‘gas tube’ Axial leaded DO 214 AA PEAK PULSE POWER: N/A N/A N/A 500W to 5kW 600W to 1kW

MULTILAYER VARISTORS MHS Series ML Series MLE Series MLN Series AUML Series OPERATING VOLTAGE: 0 Ð 42 VDC 2.5-104 VAC 0-18 VDC 5.5-18 VDC 18 VDC NEW NEW NEW NEW NEW 3.5-120 VDC Hi-Power Metal Button Flip Chip Metal Stud PEAK CURRENT: N/A 30-250A 20A 20A N/A TVS Diode TVS Diode TVS Diodes TVS Diodes Diode LEAKAGE CURRENT: <5µA <5µA <10µA <2µA AK6, AK10 Series 1N56, 1N60 Series 15KP, 5KP Series BZY91, BZY93 Series PEAK ENERGY: N/A 1-2.0J 0.5J 0.05J N/A ¨ ¨ ¨ ¨ ¨ LINES PROTECTED: 1 1 1 4 1 CAPACITANCE: 3, 12pF 40-6000pF 40-1700pF 45-430pF MAX OPERATING PACKAGE SIZE: 0402, 0603 0402-1210 0402-1206 1206 1206-2220 VOLTAGE: 17.0 to 380.0 5.5 to 185.0 5.0 to 240.0 7.5 to 75.0 7.5 to 75.0 PEAK PULSE CURRENT: 6,000A - 10,000A N/A N/A N/A N/A FORM FACTOR: Axial leaded DO 13 Button (cell/pill) Die and Die with tabs DO 4 and DO 5 STEADY STATE POWER: N/A N/A N/A N/A 20W to 75W PEAK PULSE POWER: 5000W + 1.5kW to 5kW SILCON PROTECTION DEVICES 1.5kW 600W to 15,000W 600W to 5kW SPO5X Series SPO5X Series SPO5X Series SPO5X SERIES TVS Avalanche Diode TVS Avalanche Diode Rail Clamp Array Rail Clamp w/Avalanche Diode OPERATING VOLTAGE: 0-5.5 VDC 0-5.5 VDC 0-5.5 VDC 0-5.5 VDC LEAKAGE CURRENT: <10µA <10µA <1µA <1µA LINES PROTECTED: 2,3,4,5,6 1,4,8,16 2,6,18 6,18 CAPACITANCE: 30pF 39pF 3-7 pF 3-7pF PACKAGE SIZE: SC70, SOT23, SOT143, CSP SOT143, MSOP-8, MSOP-8, SOIC-8, QSOP-24 TSSOP-8, MSOP-8 SOIC-8, QSOP-24 GAS DISCHARGE TUBES

Alpha Ultra NEW Beta High NEW Mini & smt NEW Omega Range NEW Performance Performance Beta High Gas Plasma Gas Plasma Gas Plasma Performance OVP OVP & Hybrid OVP Gas Plasma SL1012A, SL1024A Series SL1221, SL1122A Series SL1011A, SL1011B, OVP SL1021A, SL1021B Series SL1002A, SL1003A Series SP72X Series SPUSB1 Series NEW Surface Mount NEW TM SCR/Diode Array Upstream USB Port SiBOD Thyristors ¨ ¨ ¨ ¨ Terminator with ESD CRxxxx, SMT50, PEAK PULSE suppression and EMI Filtering SMT100 Series CURRENT: 5kA to 10kA 5kA to 10kA 5kA to 10kA 5kA to 10kA FORM FACTOR: 3 terminal radial 2 terminal axial & button, 2 terminal smt, 3 terminal 2 terminal axial & button, OPERATING VOLTAGE: 0-30VDC 5.5 VDC ¨ NOM. DC 3 terminal radial radial 3 terminal radial LEAKAGE CURRENT: <20µA <1µA BREAKOVER LINES PROTECTED: 4,6,14 3 MAX OPERATING VOLTAGE: 15.0 to 320.0 VOLTAGE: 90.0 to 350.0 90.0 to 600.0 90.0 to 350.0 90.0 to 600.0 CAPACITANCE: 3-5pF 47pF PEAK PULSE CURRENT: 50A to 500A PACKAGE SIZE: DIP, SOIC, SOT23 SC70-6 FORM FACTOR: DO 214 AA

27 28 OVERVOLTAGE SUPPRESSION PRODUCTS SILCON PROTECTION DEVICES ¨ PGB0010402 PGB0010603 PGB002ST23 PGB0040805 Through-hole NEW Through-hole NEW Through-hole NEW Through-hole NEW Surface Mount NEW PulseGuard TM TM TM Polymeric ESD Suppressors-PGB Series NEW NEW SiBOD Thyristor SiBOD Thyristor SiBOD Thyristor TVS Diode TVS Diode 1.60 2.24 1.27 T10A, T10B Series TO-220 Series T10 C Series SA, P6KE, 1.5KE, 5KP, SMBJ, P6SMBJ, 1KSMBJ 1.04 (0.063") (0.088") (0.050") (0.041") + 15KP, FSLD, SLD Series Series OPERATING VOLTAGE: 0-24VDC 0.44 0.81 (0.037") 2.03 45A@15kV 0.51 + ¨ ¨ ¨ ¨ ¨ PEAK CURRENT: (0.032") 2.032 2.997 (0.080") (0.020") (0.080") (0.118") CAPACITANCE: 0.05pF@1MHz 0.30 <1.0nA (0.012") MAX OPERATING LEAKAGE CURRENT: 0.457 0.41 (0.018") 0.66 (0.016") VOLTAGE: 32.0 to 243.0 25.0 to 300.0 70.0 to 240.0 5.0 to 380.0 5.0 to 188.0 OFFSTATE (0.026") RESISTANCE: 10MΩ 0.381 0.66 PEAK PULSE 0.18 (0.015") 0.76 (.026") CLAMPING: 150V,TYPICAL@8KV (0.007") (.030") CURRENT: 50A to 100A 50A to 500A 50A to 100A N/A N/A LINES PROTECTED: 1-line 1-line 2-lines 4-lines FORM FACTOR: Axial leaded Modified to 220 3 pin ‘gas tube’ Axial leaded DO 214 AA PEAK PULSE POWER: N/A N/A N/A 500W to 5kW 600W to 1kW

27 28 INDUSTRIAL VARISTOR PRODUCTS INDEX ª ª ª NEW TMOV /iTMOV UltraMov C-III Series LA Series ZA Series Varistor Series Varistor Series CATALOG NUMBER PAGE NUMBER CATALOG NUMBER PAGE NUMBER CATALOG NUMBER PAGE NUMBER 100 000 Series 18 272 000 Series 12 464 000 Series 10 V V V V DE DE DE DE ¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨ 101 000 Series 18 273 000 Series 12 465 000 Series 10 102 000 Series 18 274 000 Series, Military 12 466 000 Series 9 OPERATING VOLTAGE: 130-320 VAC 130-625 VAC 130-320 VAC 130-1,000 VAC 4-460 VAC 105 000 Series 18 278 000 Series 12 467 000 Series 9 170-420 VDC 170-825 VDC 175-1200 VDC 5.5-615 VDC 107 000 Series 18 279 000 Series 12 471 000 Series 11 PEAK CURRENT: 6,000-10,000A 750,10,000A 6,000-9,000A 1,200-6,500A 50-6,500A 109 000 Series 18 280 000 17 473 000 Series 11 PEAK ENERGY: 50-273 50-273J 45-220J 11-360J 0.1-52J 111 000 Series 18 281 000 Series 17 481 000 Series 16 MOUNT/FORM FACTOR: Radial Leaded Radial Leaded Radial Leaded Radial Leaded Radial Leaded 1206L 000 Series, PTC 9 282 000 Series 17 482 000 Series 16 121 000 Series 18 286 377 16 498 000 Series 15 DISC SIZE: 14, 20mm 7, 10, 14, 20mm 14, 20mm 7,10,14, 20mm 5, 7, 10, 14, 20mm 122 000 Series 18 286 677 16 520 000 Series 18 INDICATING: iTMOV Varistor Only N/A N/A N/A N/A 125 000 Series 18 288 000 Series, Military 11 571 000 Series 16 127 000 Series 18 289 000 Series, Military 11 571 000P Series 16 129 000 Series 18 290 000 Series, Military 11 60R 000 Series, PTC 9 150 000 Series 17 291 000 Series, Military 11 662 000 Series 13 153 002 18 297 000 Series 15 663 000 Series 13 153 003 18 298 000 Series 15 664 000 Series 13 153 007 18 299 000 Series 15 665 000 Series 13 153 008 18 307 000 Series 13 995 000 Series 15 153 009 18 30R 000 Series, PTC 9 997 000 Series 15 154 000 Series 18 311 000 Series see 312 Series 999 000 Series 15 154 000T Series 18 312 000 Series 12 AUML Series 27 155 000 Series 17 313 000 Series 12 BLF Series 14 MA Series RA Series CH Series CA Series NA Series 155 100 Series 17 313 000 ID Series 12 BLN Series 13 155 300 Series 17 314 000 Series 12 BLS Series 14 155 400 Series 17 315 000 Series 12 C-III Series 29 1812L 000 Series, PTC 9 318 000 Series 12 CA Series 29

¨ ¨ ¨ 202 000 Series 11 322 000 Series 12 CCMR Series 14 2029L 000 Series see 1812L Series 324 000 Series 12 FLA Series 14 OPERATING VOLTAGE: 4-264 VAC 4-275 VAC 14-275 VAC 130-2800 VAC 130-750 VAC 203 000 Series 11 325 000 Series 12 FLM Series 14 13-365 VDC 5.5-364 VDC 18-369 VDC 175-3500 VDC 175-970 VDC 213 000 Series 12 326 000 Series 12 FLQ Series 14 PEAK CURRENT: 40-100A 150-6,500A 250-500A 20,000-70,000A 40,000A 215 000 Series 13 340 000 Series, Military 17 FLU Series 14 PEAK ENERGY: 0.06-1.7J 0.4-140J 1-23J 200-10,000J 270-1,050J 216 000 Series 13 340 300 17 HA/HB34 Series 29 MOUNT/FORM 217 000 Series 12 342 000 Series 17 KLDR Series 14 FACTOR: Axial Leaded Packaged Surface Mount Bare Disc Bare Disc 218 000 Series 12 342 000 Series, Military 17 KLK Series 14 219 000 Series 13 3425L 000 Series, PTC 9 KLQ Series 14 DISC SIZE: 3mm 8, 6, 22mm N/A 32, 40, 60mm 34mm 220 003 11 344 000 Series 16 KLKD Series 14 220 007 11 344 000P Series 16 KLKR Series 14 221 000 Series 13 344 400 Series 16 KLMR Series see CCMR Series 224 000 Series 11 344 400P Series 16 L60030 Series 16 225 000 Series 11 344 600 Series 16 LA Varistor Series 29 226 000 Series 13 344 800 Series 16 MHS Varistor Series 27 227 000 Series 12 345 101 16 ML Varistor Series 27 228 000 Series 12 345 121 16 MLE Varistor Series 27 229 000 Series 11 345 200 Series 16 MLN Varistor Series 27 230 000 Series 11 345 300 Series 16 NA Varistor Series 29 232 000 Series 13 345 500 Series 16 PA Varistor Series 29 233 000 Series 13 346 877 16 PGB Series 27 PA Series HB34 Series HA Series DA/DB Series BB/BA Series 234 000 Series 13 348 000 Series 16 RA Varistor Series 29 235 000 Series 13 354 000 Series 18 SiBODTM Thyristors 27-28 236 000 Series 13 356 000 Series 18 T10A, T10B, T10C, 238 000 Series 13 359 000 Series 18 V DE T0-220, CRxxxx, SMT50, ¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨ 239 000 Series 13 429 000 Series 9 SMT100 Series 242 000 Series 15 430 000 Series 9 OPERATING VOLTAGE: 130-660 VAC 130-750 VAC 130-750 VAC 130-970 VAC 130-2800 VAL 245 001 16 431 000 Series 10 SL Series Gas Plasma 175-850 VDC 175-970 VDC 175-970 VDC 175-970 VDC 175-350 VDC 245 002 15 433 000 Series 9 OVP (GDTs) 28 PEAK CURRENT: 6,500A 40,000A 25,000-40,000A 40,000A 50,000-70,000A 251 000 Series 11 434 000 Series 9 SP05x Series 27 SP72x Series 27 PEAK ENERGY: 70-250J 270-1,050J 200-1,050J 270-1,050J 450-10,000J 252 000 Series 10 435 000 Series 10 SPUSB1 Series 27 MOUNT/FORM 253 000 Series, Military 11 436 000 Series see 461 Series TMOVª and iTMOVª FACTOR: Packaged Industrial Packaged Packaged Industrial Packaged Packaged 254 000 Series 18 445 000 18 257 000 Series 15 446 000 Series 10 Varistor Series 29 DISC SIZE: 20mm 34mm 32, 40mm 40mm 60mm 259 000 Series 15 447 000 Series 10 TVS Diodes 28 262 000 Series 12 451 000 Series 10 SA, PgKE, 1.5KE, 5KP, 263 000 Series 11 452 000 Series 10 FSLD, SLD, AK6, AK10, 265 000 Series 12 453 000 Series 10 1N56, 1N60, BZY91, 266 000 Series 12 454 000 Series 10 BZY93 Series 267 000 Series, Military 12 455 000 Series 10 UltraMOVª 268 000 Series 12 459 000 Series 11 Varistor Series 29 269 000 Series, Military 12 460 000 Series 11 ZA Varistor Series 29 271 000 Series see 451 Series 461 000 Series 10

29 30 INDUSTRIAL VARISTOR PRODUCTS INDEX ª ª ª NEW TMOV /iTMOV UltraMov C-III Series LA Series ZA Series Varistor Series Varistor Series CATALOG NUMBER PAGE NUMBER CATALOG NUMBER PAGE NUMBER CATALOG NUMBER PAGE NUMBER 100 000 Series 18 272 000 Series 12 464 000 Series 10 V V V V DE DE DE DE ¨ ¨ ¨ ¨ ¨ ¨ ¨ ¨ 101 000 Series 18 273 000 Series 12 465 000 Series 10 102 000 Series 18 274 000 Series, Military 12 466 000 Series 9 OPERATING VOLTAGE: 130-320 VAC 130-625 VAC 130-320 VAC 130-1,000 VAC 4-460 VAC 105 000 Series 18 278 000 Series 12 467 000 Series 9 170-420 VDC 170-825 VDC 175-1200 VDC 5.5-615 VDC 107 000 Series 18 279 000 Series 12 471 000 Series 11 PEAK CURRENT: 6,000-10,000A 750,10,000A 6,000-9,000A 1,200-6,500A 50-6,500A 109 000 Series 18 280 000 17 473 000 Series 11 PEAK ENERGY: 50-273 50-273J 45-220J 11-360J 0.1-52J 111 000 Series 18 281 000 Series 17 481 000 Series 16 MOUNT/FORM FACTOR: Radial Leaded Radial Leaded Radial Leaded Radial Leaded Radial Leaded 1206L 000 Series, PTC 9 282 000 Series 17 482 000 Series 16 121 000 Series 18 286 377 16 498 000 Series 15 DISC SIZE: 14, 20mm 7, 10, 14, 20mm 14, 20mm 7,10,14, 20mm 5, 7, 10, 14, 20mm 122 000 Series 18 286 677 16 520 000 Series 18 INDICATING: iTMOV Varistor Only N/A N/A N/A N/A 125 000 Series 18 288 000 Series, Military 11 571 000 Series 16 127 000 Series 18 289 000 Series, Military 11 571 000P Series 16 129 000 Series 18 290 000 Series, Military 11 60R 000 Series, PTC 9 150 000 Series 17 291 000 Series, Military 11 662 000 Series 13 153 002 18 297 000 Series 15 663 000 Series 13 153 003 18 298 000 Series 15 664 000 Series 13 153 007 18 299 000 Series 15 665 000 Series 13 153 008 18 307 000 Series 13 995 000 Series 15 153 009 18 30R 000 Series, PTC 9 997 000 Series 15 154 000 Series 18 311 000 Series see 312 Series 999 000 Series 15 154 000T Series 18 312 000 Series 12 AUML Series 27 155 000 Series 17 313 000 Series 12 BLF Series 14 MA Series RA Series CH Series CA Series NA Series 155 100 Series 17 313 000 ID Series 12 BLN Series 13 155 300 Series 17 314 000 Series 12 BLS Series 14 155 400 Series 17 315 000 Series 12 C-III Series 29 1812L 000 Series, PTC 9 318 000 Series 12 CA Series 29

29 30 Circuit Protection Specialists

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