PRODUCT CATALOG & DESIGN GUIDE DIODE Transient Voltage Suppression (TVS) Diode Products Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com Littelfuse Circuit Prot Solutions Portf Consumer Electronics Telecom White Goods Medical Equipment TVSS and Power S DESIGN SUPPORT Live Application Design and Technical Support—Tap into our expertise. Littelfuse engi- neers are available around the world to help you address design challenges and develop unique, customized solutions for your products. Product Sampling Programs—Most of our products are available as samples for testing and verification within your circuit design. Visit Littelfuse.com or contact a Littelfuse product representative for additional information. Product Evaluation Labs and Services—Littelfuse global labs are the hub of our new product development initiatives, and also provide design and compliance support testing as an added-value to our customers. 1 OVERVOLTAGE SUPPRESSION TECHNOLOGIES (1-6) 1. TVS Diodes — Suppress 4. Gas Plasma Arrestors overvoltage transients such (GDTs) — Available in small as Electrical Fast Transients footprint leaded and surface (EFT), inductive load switching mount configurations, and lightning in a wide Littelfuse GDTs respond variety of applications in the fast to transient overvoltage computer, industrial, telecom events, reducing the risk of and automotive markets. equipment damage. 2 2. Varistors — Multiple forms, 5. Silicon Protection from Metal Oxide Varistors Arrays — Designed specifically (MOVs) that suppress transient to protect analog and digital voltages to Multi-Layer Varistors signal lines from electrostatic (MLVs) designed for applications discharge (ESD) and other requiring protection from overvoltage transients. various transients in computers ® and handheld devices as well 6. PulseGuard ESD as industrial and automotive Suppressors — Available in applications. various surface mount form factors to protect high-speed 3. SIDACtor® Devices— digital lines without causing Complete line of protection signal distortion. thyristor products specifically designed to suppress overvoltage transients in a broad range of telecom and Visit datacom applications. Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com SWITCHING tection TECHNOLOGIES ACCESSORIES Switching Thyristors— In addition to our broad portfolio Solid-state switches used to of circuit protection technologies, folio control the flow of electrical we offer an array of fuse holders current in applications, capable including circuit board, panel Supplies Lighting General Electronics of withstanding rated blocking/ or in-line wire mounted devices off-state voltage until triggered to support a wide range of to on-state. application requirements. 35 7 OVERCURRENT PROTECTION TECHNOLOGIES (7-8) 7. Positive Temperature Coefficient Devices (PTCs)— Provide resettable overcurrent protection for a wide range of applications. 4 68 8. Fuses — Full range including surface mount, axial, glass or ceramic, thin-film or Nano2® style, fast-acting or SloBlo®, MINI® and ATO® fuses. www.littelfuse.com for more information. Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com Transient Voltage Suppression (TVS) Diodes Littelfuse offers the widest range of TVS Diodes and other circuit protection products. Littelfuse TVS Diodes are ideal for protecting semiconductor components from high-voltage transients. They can respond to overvoltage events faster than most other types of circuit protection. This makes TVS Diodes useful for protecting against very fast and often damaging voltage transients, such as lightning, inductive load switching and electrostatic discharge. Littelfuse TVS Diodes can fit a wide range of circuit protection applications but were primarily designed to protect I/O interfaces in telecommunication and industrial equipment, computers and consumer electronics. Features tLow incremental surge resistance tUnidirectional and Bidirectional polarities available t Reverse standoff voltages range from 5 to 512V t RoHS compliant–Matte Tin Pb-free plated t Surface-mount power ratings from 400W to 5,000W t Axial lead power ratings from 400W to 30,000W (30kW) t High current protection available for 6kA and 10kA Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com Transient Voltage Suppression Diodes TVS Diode Products Overvoltage Suppression Facts ................2 TABLE OF CONTENTS Transient Voltage Scenarios ...................... 3 TVS Diode Terms & Definitions ................. 4 TVS Diode Selection Checklist ..................4 Type Surface Mount - Standard Applications (400-5000W) TVS Diode Series Series SMAJ P4SMA SACB SMBJ P6SMB 1KSMB SMCJ 1.5SMC SMDJ 5.0SMDJ Data Sheet Start Page ..................................Page # 7131923293541455157 Photo Operating -85° to +302° F Temperature (-65° to +150° C) Package Type DO-214AC DO-214AC DO-214AA DO-214AA DO-214AA DO-214AA DO-214AB DO-214AB DO-214AB DO-214AB 12-170 Reverse Standoff uni-directional 5.0-440 5.8-495 5.0-50 5.0-440 5.8-495 5.8-136 5.0-440 5.8-495 5.0-170 Voltage (VR) 12-45 bi-directional Peak Pulse Power † 400W 400W 500W 600W 600W 1000W 1500W 1500W 3000W 5000W Range (PPP) Peak Pulse Current Not Applicable (IPP 8x20μs) Maximum Clamping Refer to electrical characteristics table within each series data sheet Voltage (VC) RoHS Compliant Yes Pb Lead-Free Ye s Type Axial Leaded - Standard Applications (400-5000W) Axial Leaded - High Power Auto Series P4KE SA SAC P6KE 1.5KE LCE 3KP 5KP 15KPA 20KPA 30KPA AK6 AK10 SLD Page # 63 69 75 79 85 91 97 103 109 115 121 127 131 135 Photo Operating -85° to +302° F -67° to +347° F -85° to +302° F Temperature (-65° to +150° C) (-55° to +175° C) (-65° to +150° C) Radial Radial Package Type DO-41 DO-15 DO-15 DO-15 DO-201 DO-201 P600 P600 P600 P600 P600 P600 Lead Lead Reverse Standoff 5.8-495 5.0-180 5.0-50 5.8-512 5.8-495 6.5-90 5.0-220 5.0-250 17-280 20.0-300 28.0-288 58-430 58-430 10-24 Voltage (VR) Peak Pulse Power 2200 based on † 400W 500W 500W 600W 1500W 1500W 3000W 5000W 15000W 20000W 30000W NA NA Range (PPP) 1μs/150ms pulse Peak Pulse Current Not Applicable 6000A 10000A NA (IPP 8x20μs) Maximum Clamping Refer to electrical characteristics table within each series data sheet Voltage (VC) RoHS Compliant Ye s Pb Ye s Lead-Free † based on 10/1000μs pulse unless stated otherwise ©2008 Littelfuse, Inc. 1 Specifications are subject to change without notice. Please refer to http://www.littelfuse.com for current information. Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com Transient Voltage Suppression Diodes Overvoltage Suppression Facts The exponential rise time of lightning is in the range Transient Threats – What Are Transients? 1.2μsec to 10μsec (essentially 10% to 90%) and the Voltage Transients are defined as short duration surges of duration is in the range of 50μsec to 1000μsec (50% of electrical energy and are the result of the sudden release peak values). ESD on the other hand, is a much shorter of energy previously stored or induced by other means, duration event. The rise time has been characterized at less such as heavy inductive loads or lightning. In electrical than 1.0ns. The overall duration is approximately 100ns. or electronic circuits, this energy can be released in a predictable manner via controlled switching actions, or Why are Transients of Increasing Concern? randomly induced into a circuit from external sources. Component miniaturization has resulted in increased Repeatable transients are frequently caused by the sensitivity to electrical stresses. Microprocessors for operation of motors, generators, or the switching of example, have structures and conductive paths which reactive circuit components. Random transients, on the are unable to handle high currents from ESD transients. other hand, are often caused by Lightning and Electrostatic Such components operate at very low voltages, so Discharge (ESD). Lightning and ESD generally occur voltage disturbances must be controlled to prevent device unpredictably, and may require elaborate monitoring to be interruption and latent or catastrophic failures. accurately measured, especially if induced at the circuit board level. Numerous electronics standards groups have Sensitive microprocessors are prevelant today in a wide analyzed transient voltage occurrences using accepted range of devices. Everything from home appliances, such monitoring or testing methods. The key characteristics of as dishwashers, to industrial controls and even toys use several transients are shown in the table below. microprocessors to improve functionality and efficiency. VOLTAGE CURRENT RISE-TIME DURATION Most vehicles now also employ multiple electronic Lighting 25kV 20kA 10 μs 1ms systems to control the engine, climate, braking and, in some cases, steering, traction and safety systems. Switching 600V 500A 50μs 500ms EMP 1kV 10A 20ns 1ms Many of the sub- or supporting components (such as ESD 15kV 30A <1ns 100ns electric motors or accessories) within appliances