Automotive Electronics APPLICATIONS GUIDE the First Blade-Type ATO (Autofuse®)

Automotive Electronics APPLICATIONS GUIDE The first blade-type ATO (Autofuse®)

1976 Fast Acting Fuse, now considered the global Littelfuse: A History of standard Automotive Innovation

Littelfuse introduced the first of what would become a long line of automotive circuit protection technologies in the 1930s, with the design and development of the original automotive fuses. That commitment to the automotive industry continues today as Littelfuse vehicles have become increasingly dependent on high powered electronics. invents the first

1930 automotive fuse Introduces industry’s ESTABLISHED INFRASTRUCTURE first centralized under- Littelfuse supports automotive designers with a global network of test labs and design

1950 dash fuse block and manufacturing facilities across four continents, including China’s second-largest semiconductor fabrication facility. Our Silicon Valley Technology Center supports the CONTENTS complete innovation life cycle, from new materials and product concepts to product design, prototyping, testing and validation. Topic Page Develops 1200V A History of Automotive Innovation 2-3 INVESTED IN THE FUTURE SiC MOSFET for

2017 battery charging The Evolution of Automotive Circuit Protection 4-5 In addition to our comprehensive circuit applications protection offering and growing line of Electrical Threats and New Automotive Technologies 6-7 sensing solutions, our investments in Industry Standards 8 Monolith Semiconductor and ON The Future Is Now 9 Semiconductor allow us to take our place among power semiconductor Applications 10-23 suppliers for the automotive market.

Littelfuse Automotive Milestones 2013 Expands global sensor platform 1976 in automotive market with the 2015 The first blade-type ATO 1996 2011 acquisition of Hamlin, Inc. Invests in Monolith Semiconductor, 1930 (Autofuse®) Fast-Acting First circuit protection Z-Case MasterFuse a company developing silicon Littelfuse introduces Fuse, now considered manufacturer to receive fuses for the hybrid AEC-Q101 qualified TVS Diodes carbide technology for power 2018 first automotive fuses the global standard QS 9000 certification electric vehicle market and TVS Diode Arrays semiconductors Acquires IXYS

1950 1991 1999 2012 2014 2016 Introduces automotive MEGA® Automotive Named “Best Launches a new automotive Opens Technology Center to Opens Silicon Valley Technology Center switches and relays Fuse for higher current Electrical Component sensor platform with the facilitate the development of to accelerate the development of next- applications Supplier” by Automotive acquisition of Accel AB next-generation products generation materials and products First centralized under- Industry magazine the-dash fuse block for Acquires the circuit protection automotive industry business of TE Connectivity, expanding presence in automotive electronics Acquires a select portfolio of semiconductor products from ON Semiconductor

Littelfuse.com 2 © 2018 Littelfuse, Inc. • Specifications are subject to change without notice Littelfuse.com 3 © 2018 Littelfuse, Inc. • Specifications are subject to change without notice The Evolution of Automotive Circuit Protection

For many decades, vehicles were essentially mechanical systems supplemented by hydraulic or electrical DRIVING FACTORS FOR AUTOMOTIVE ELECTRONICS systems for functions like steering, ignition, lights, and audio entertainment. Modern vehicles, unlike their predecessors, are literally stuffed with electronic systems. A combination of powerful forces in the automotive electronics industry are spurring changes in circuit protection, power control and sensing applications. ADVANCING WITH THE TIMES One wire/one fuse protection trend Higher power consumption With electronics controlling an ever-higher percentage of vehicle functions, the circuit protection devices Better space and weight efficiency that prevent hazardous overvoltages and overcurrents have evolved to keep up with the transition to what is essentially a supercomputer on wheels. In addition, electrical power control is transitioning from mechanical Today’s cars include myriad systems that Smarter circuit protection relays, solenoids and switches to devices like IGBTs, MOSFETs, Schottky Diodes and Thyristors. use semiconductors, and sophisticated The expansion of infotainment systems hybrids have even more. Designers need a New safety features like multiple airbags, battery disconnect controls, Sophisticated electronics are now integral to vehicles sold at every price point. For example, hydraulic power passenger sensing system, auto dimming mirrors, anti-rollover features, wide range of circuit protection options to steering is being superseded by steer-by-wire systems. New safety and passenger entertainment functions stability control, seat belt pre-tensioning and tire pressure monitoring safeguard all these new systems over the such as advanced driver assistance systems (ADAS), parking assist, lane departure and forward Demand for higher performance and lower emissions collision warning systems were once available only on high-end vehicles. vehicle’s expected 15-20-year lifetime. The growth of hybrid, electric and alternative fuel vehicles Growing use of power semiconductors like Ignition IGBTs, Thyristors and Schottky Diodes

Littelfuse.com 4 © 2018 Littelfuse, Inc. • Specifications are subject to change without notice Littelfuse.com 5 © 2018 Littelfuse, Inc. • Specifications are subject to change without notice Electrical Threats

and New Automotive THREAT: OVERLOADS/SHORT-CIRCUIT CURRENTS Sustained overloads will cause circuit components to overheat, potentially leading to catastrophic and uncontrolled failures of the vehicle’s electrical system. Short circuits can surpass the capabilities of the wires, connectors, etc. in the power circuit, which can also lead to uncontrolled failures or Technologies possibly a thermal event.

Fuses

Automotive Fuses protect components or circuits by melting under overcurrent conditions to interrupt current flow. In addition to THREAT: ELECTROSTATIC DISCHARGE (ESD) withstanding rapid temperature cycles and vibration, they must offer ESD is characterized by fast rise times and high peak voltages and currents up to 30A, which can long-term stability and AEC-Q test compliance. Littelfuse offers an melt silicon and conductor traces. Even when ESDs don’t cause catastrophic failures, electrical unparalleled range of automotive Fuses, from cartridge and blade styles currents due to ESD can change the state of internal logic, causing a system to latch up and behave to surface-mount chip Fuses. unpredictably or cause corruption of a data stream. Without adequate protection, ESD can damage control units, infotainment electronics, sensors, fuel injectors, valves, motors, powertrains and dozens of other components. Sometimes, a component or circuit is damaged by ESD, creating latent defects that later progress to premature failures. Resettable PPTC Overcurrent Protection Devices

Littelfuse Polymeric Positive Temperature Coefficient (PPTC) devices are TVS Diode Arrays widely used in automotive applications like wiring harness and network protection, communication and infotainment systems, and EV battery Because of their high-speed response to overvoltages, TVS management systems. Unlike Fuses, these devices provide resettable Diode Arrays are widely used for ESD protection in automotive protection for automotive electronics against damage from harmful ® electronics. Automotive-qualified SPA TVS Diode Arrays from overcurrent surges. Bladed, leaded and surface-mount form factors are Littelfuse are available in a range of compact surface-mount available for automotive applications. packages to fit into any layout.

THREAT: SWITCHING LOADS IN POWER ELECTRONICS CIRCUITS OPPORTUNITY: ELECTRIFYING THE VEHICLES OF TOMORROW

In modern automotive designs, all on-board electronics are connected to the battery and the Researchers predict that by 2022, a typical high-end vehicle will contain more than $6,000 worth alternator. However, the output of the alternator is unstable and requires further conditioning of electronics. The growing interest in self-driving vehicles, vehicle-to-vehicle and vehicle-to- before it can be used to power the vehicle’s other systems. During the powering or switching infrastructure communications, and on-board safety, convenience and environmental features of inductive loads, the power is temporarily interrupted, so that unwanted voltage spikes or ensures the sheer number of electronic components per vehicle will continue to expand rapidly. transients are generated. If left unchecked, these transients would be transmitted along the Additionally, as hybrid-electric vehicles become increasingly popular, power semiconductors power line and into the electronic modules. will be critical to the next generation of Battery Management Systems and on-board/off-board charging systems.

Varistors

Automotive-qualified Metal Oxide Varistors (MOVs) and Multilayer Varistors Power Semiconductors (MLVs) protect against voltage transients induced by load dump and other Power semiconductor devices enable the next generation of vehicles by transient events. When exposed to high-voltage transients, the varistor managing power flexibly. Fast-switching SiC technology increases power impedance changes by many orders of magnitude—from a near open- density and energy efficiency in systems like on-board battery chargers. circuit to a highly conductive level—clamping the transient voltage to a The Littelfuse power semiconductor portfolio includes Thyristors, safe level. Choose from radial-leaded MOVs in disc sizes from 5mm to Rectifiers, Fast Recovering Diodes, IGBTs and wide band gap devices. 20mm. Also, surface-mounted MLVs are available.

Littelfuse.com 6 © 2018 Littelfuse, Inc. • Specifications are subject to change without notice Littelfuse.com 7 © 2018 Littelfuse, Inc. • Specifications are subject to change without notice APPLICATIONS

Living Up to the Industry’s Standards The Future Is Now

Whether powered by gas electric, fuel cell electric, diesel electric, Li-ion polymer, or ultra-capacitor engines, electric vehicles are challenging automakers to address higher energy applications, including Battery Management Systems and on-board charging systems. Autonomous (self-driving) vehicles are already making appearances on the road. Similarly, connected vehicles are offering Internet access for connecting with devices both inside and outside the car. A range of new protocols are emerging:

When there is the potential for a collision, V2V (vehicle-to-vehicle) communications notify the driver or autonomous vehicle to take evasive action. V2I (vehicle-to-infrastructure) communications allow the traffic system to collect data that can be used to control traffic light timing, allowing more efficient traffic flow. BroadR-Reach technology allows multiple in-vehicle systems to access information simultaneously over unshielded single twisted-pair cable. Littelfuse experts support customers’ designs in accordance with worldwide automotive safety standards. By contributing their own experience to the development of new standards, Littelfuse engineers help to HDBaseT has historically been used in the consumer and high-end A/V market to provide high- ensure the safety and reliability of the next generation of circuit protection products. bandwidth, long-reach capabilities. A new, automotive version has been introduced to provide 6Gbps throughput for in-vehicle convergence of high-def A/V, USB, Ethernet, feature controls Littelfuse engineers help customers understand which standards apply in terms of both the application and power on a single pair of wires. itself and the geographical location for which it is designed, as well as offer guidance on how to meet those standards. Littelfuse offers a broad line of circuit protection devices certified compliant with these standards. Littelfuse specialists can help designers develop automotive modules that meet the safety and test standards of the latest communication protocols. n Transient surges: JASO and ISO 7637-2 (Surge) test n Electrical disturbance by conduction and coupling: ISO 7637-2 n Electrical disturbances from electrostatic discharge: ISO 10605 n Load dump, switching transients and ESD threats: SAE J1113, GM 9105, ES-F2af-1316-AA Ford (Visteon) To view this brochure in interactive format, including Electrical component qualification: links to videos, selection guides and tips, information on product samples and application support, visit: n AEC-Q101: failure-mechanism based stress test qualification for discrete semiconductors in automotive applications www.littelfuse.com/automotiveelectronics n AEC-Q200: stress test qualification for passive electrical devices

Littelfuse.com 8 © 2018 Littelfuse, Inc. • Specifications are subject to change without notice Littelfuse.com 9 © 2018 Littelfuse, Inc. • Specifications are subject to change without notice Applications

MOTOR CONTROL LIGHTING – INSIDE CABIN As mechanical/hydraulic actuators are replaced with electric motors, such as Individual user settings and automatic dimming based on external light intensity those for electric parking, braking, seat modules and mirrors, motor control circuit are increasingly common in modern interior lighting systems. Designers must protection is critical to a vehicle’s overall reliability. Potential threats include load guard against load dump, surges, ESD, overcurrents and other threats. Choose dump, overcurrents, surges and ESD. Littelfuse offers a wide range of TVS Diodes resettable PPTCs for thermal protection of LEDs; MLVs and Diode Arrays offer and Diode Arrays, MLVs, MOVs and PPTCs to protect motor control applications. ESD protection for user controls.

Control Module Brushed DC Motor LED Bulb Relay 1 2 12V 1 2 12V Surge Power Overcurrent Surge Power Protection Battery Protection Switches Protection Supply 5 Overcurrent Protection 6 I/O Surge 5 6 Protection 3 3 ESD Microcontroller ESD CAN/LIN Drivers Protection Protection Transceiver Control Unit

4 Touch Pad ESD Micro Switch I/O Button Protection

Carbon Contacts

©2018 Littelfuse, Inc. Specifications are subject to change without notice. 4 Function Product Family Product Series Product Description Overcurrent Protection TVS Diode for ISO7637-2 5a/5b and ISO16750 load dump TVS Diode SLD8 protection with peak pulse capability of 7000W Load Dump Protection Multilayer Varistor Multilayer Varistor with load dump energy rating AUML ©2018 Littelfuse, Inc. Specifications are subject to change without notice. 1 (MLV) per SAE specification J1113 TPSMA, TPSMB, TVS Diode for secondary induced transient voltages Function Product Family Product Series Product Description Standard Surge Protection TVS Diode TPSMC, TPSMD with peak pulse capability from 400W to 5000W TVS Diode for ISO7637-2 5a/5b and ISO16750 load TVS Diode SLD8 Ultra-Low V Schottky Barrier Rectifier meets the dump protection with peak pulse capability of 7000W F Load Dump Protection Reverse Blocking/ general requirements of automotive applications by providing Multilayer Varistor Multilayer Varistor with load dump energy rating 2 Schottky Diode DST 1 AUML Output Rectification high temperature capability, low leakage and low forward (MLV) per SAE specification J1113 voltage drop to 100V and 10A TPSMA, TPSMB, TVS Diode for secondary induced transient voltages Standard Surge Protection TVS Diode CAN Bus ESD Protection TVS Diode Array SM24CAN Industry-standard solution for ESD protection on CAN bus TPSMC, TPSMD with peak pulse capability from 400W to 5000W 3 LIN Bus ESD Protection TVS Diode Array AQ24C Industry-standard solution for ESD and surge protection for LIN bus Normally custom made to fit into the motor housing. By mounting General-purpose ESD Diodes in multiple package options them close to the motor windings, they will trip more quickly when the TVS Diode Array AQ1 2 Overcurrent Protection PPTC TD, CHIP, Rline and ESD capability of 30kV motor windings are hot and therefore closer to being damaged, and 4 IO Protection Multilayer Varistor Voltage suppression Varistor up to 120Vdc more slowly when the motor windings are cold. MLA Auto (MLV) and 8/15kV ESD capability Metal Oxide Radial-leaded MOV with up to 10kA surge current and Overvoltage Protection AUMOV 3 Varistor (MOV) 2.5kV isolation voltage capability up to 125°C 5 Thermal Protection SMD PPTC miniASMD, ASMD Resettable SMD overcurrent protection up to 3A SMD PPTC miniASMD, ASMD Resettable SMD overcurrent protection up to 3A 4 Overcurrent Protection SMD PPTC miniASMD Resettable SMD overcurrent protection up to 3A Ultra-Low VF Schottky Barrier Rectifier meets the 5 ESD Protection Diode Array AQ1, MLA Auto Industry-standard solution for ESD protection up to 3A 6 Reverse Polarity Protection general requirements of automotive applications by providing Schottky Diode DST TVS Diode for secondary induced transient voltages high temperature capability, low leakage and low forward Overvoltage Protection TVS Diode TPSMB, TP6KE 6 with peak pulse capability from 400W to 5000W voltage drop to 100V and 10A

Littelfuse.com 10 © 2018 Littelfuse, Inc. • Specifications are subject to change without notice Littelfuse.com 11 © 2018 Littelfuse, Inc. • Specifications are subject to change without notice Applications

IGNITION SYSTEM LIGHTING – HEADLAMPS The efficiency of gasoline engines and consequently their mileage and emissions Advanced headlamps use LEDs for roadway illumination as well as motors to level, are dependent on the performance of the ignition system. The latter must be swivel and shutter the high and low beams. Common threats include load dump, protected against variety of threats, including load dumps, feedback loops and surges, ESD and short circuits. Solutions include SMD Fuses, TVS Diodes and overcurrents. In addition to high-performance Ignition IGBTs, Littelfuse offers a Diode Arrays, MLVs and Schottky Diodes. broad portfolio of protection devices like TVS Diodes, MLVs, PPTCs and Fuses.

Spark Plug 4 High Beam Low Beam Voltage 12V 1 2 Regulator + – Surge Power Indicator Fuse Vp Vs Protection Supply DTRL 4 Control Unit Fog Light Overcurrent Protection – + 5 1 2 LED 3 Driver TVS PPTC Monitor Ignition 3 IGBT ESD 12V CAN/LIN Alternator Transceiver Battery Protection

Microcontroller Leveling ECU Stepper Motor Swiveling Driver Shutter Sensors

Function Product Family Product Series Product Description

©2018 Littelfuse, Inc. Specifications are subject to change without notice. TVS Diode for ISO7637-2 5a/5b and ISO16750 load dump TVS Diode SLD8 protection with peak pulse capability of 7000W Function Product Family Product Series Product Description Load Dump Protection Multilayer Varistor Multilayer Varistor with load dump energy rating TVS Diode for ISO7637-2 5a/5b and ISO16750 load dump AUML TVS Diode SLD8 (MLV) per SAE specification J1113 protection with peak pulse capability of 7000W 1 Load Dump Protection 1 Multilayer Varistor Multilayer varistor with load dump energy rating per TPSMA, TPSMB, TVS Diode for secondary induced transient voltages AUML TVS Diode (MLV) SAE Specification J1113 TPSMC, TPSMD with peak pulse capability from 400W to 5000W Standard Surge Protection 2 Feedback Loop Protection PPTC miniASMD Resettable SMD overcurrent protection up to 2.6A Multilayer Varistor MLA Auto Voltage suppression Varistor up to 120Vdc and 8/15kV ESD capability Ignition IGBTs with integrated ESD and overvoltage (MLV) Ignition IGBT NGB, NGD 3 clamping protection above 350 Vbr Ultra-Low VF Schottky Barrier Rectifier meets the general requirements High I2t SMD fuse in 1206 package for applications 2 Freewheeling Diode Schottky Diode DST of automotive applications by providing high temperature capability, Coil Overcurrent Protection SMD Fuse 440A, 441A 4 up to 0.75 A/63 Vdc and 8 A/32 Vdc low leakage and low forward voltage drop CAN Bus ESD Protection TVS Diode Array SM24CAN Industry-standard solution for ESD protection on CAN bus 3 LIN Bus ESD Protection TVS Diode Array AQ24C Industry-standard solution for ESD and surge protection for LIN bus 4 Short Circuit Protection SMD Fuse 501A High I2t SMD Fuse with ratings up to 32V and 20A SMD PPTC miniASMD, ASMD Resettable SMD overcurrent protection up to 3A

Ultra-Low V Schottky Barrier Rectifier meets the general requirements 5 Reverse Polarity Protection F Schottky Diode DST of automotive applications by providing high temperature capability, low leakage and low forward voltage drop to 100V and 10A SLD8 TVS Diode Array NGB IGBT 441A SMD Fuse

Littelfuse.com 12 © 2018 Littelfuse, Inc. • Specifications are subject to change without notice Littelfuse.com 13 © 2018 Littelfuse, Inc. • Specifications are subject to change without notice Applications

ECU ECALL Various Electronic Control Units (ECUs) are used for functions such as engine In a crash, an eCall-equipped car will automatically call the nearest emergency control, GPS connectivity, transmission control, door lock and eCall. They have center to summon help. Potential electrical threats to this system include load interfaces like power input and communication. Defense against overcurrents, dump, overcurrents, surges and ESD. To ensure eCall systems operate at peak surges and ESD requires a range of circuit protection devices such as Fuses, performance, Littelfuse offers protection devices like TVS Diodes and Diode Arrays, PPTCs, TVS Diodes and Diode Arrays, MOVs, MLVs and Polymer ESD Suppressors. MLVs, MOVs, SMD Fuses, SMD PPTCs and XTREME-GUARD™ ESD Suppressors.

ECU (Generic) Audio or 4 Amplifier 4 Class D 1 2 Amplifier 12V Wireless Microcontroller Interfaces 1 2 Battery Buck/Boost 3 GPS, WiFi, Cellular, 12V LDO V2X, etc. Converter 5 7 8 6 Battery Connectivity 5 Microcontroller Buck/Boost Charger Module Wired Converter Data Lines Ethernet, CAN, 8 3 USB, LIN 4 Backup Backup CAN Bus Voltage Battery

Function Product Family Product Series Product Description ©2018 Littelfuse, Inc. Specifications are subject to change without notice. TVS Diode for ISO7637-2 5a/5b and ISO16750 load dump TVS Diode SLD8 protection with peak pulse capability of 7000W Function Product Family Product Series Product Description Load Dump Protection Multilayer Varistor with load dump energy rating 1 Overcurrent Protection SMD Fuse 437A, 440A, 441A SMD Fuses for overcurrent Protection up to 63V and 8A Multilayer Varistor (MLV) AUML 1 per SAE specification J1113 Overcurrent Protection SMD PPTC miniASMD, ASMD Resettable SMD overcurrent protection up to 3A 2 TPSMA, TPSMB, TVS Diode for secondary induced transient voltages Standard Surge TVS Diode TPSMA, TPSMB, TVS Diode for secondary induced transient voltages TPSMC, TPSMD with peak pulse capability from 400W to 5000W TVS Diode TPSMC, TPSMD with peak pulse capability from 400W to 5000W Protection 3 Overvoltage Protection Multilayer Varistor (MLV) MLA Auto Voltage suppression Varistor up to 120Vdc and 8/15kV ESD capability Metal Oxide Varistor Multilayer Varistor with load dump energy rating SMD Fuses for overcurrent protection; tested to ensure AUML Overcurrent Protection SMD Fuse 437A, 440A, 441A (MOV) per SAE Specification J1113 2 compatibility with automotive applications AQ1 Series ESD Diodes are used for slow-speed interfaces, and ASMD, Battery Strap, TVS Diode Array AQ1, AQ3 Overcurrent Protection SMD PPTC Resettable SMD overcurrent protection up to 13A AQ3 Series ESD Diodes are used for high-speed interfaces 3 miniASMD 4 ESD/Surge Protection Multilayer Varistor TPSMA, TPSMB, TVS Diode for secondary induced transient voltages MLA Auto Voltage suppression Varistor up to 120Vdc and 8/15kV ESD capability TVS Diode (MLV) TPSMC, TPSMD with peak pulse capability from 400W to 5000W 4 Overvoltage Protection Protection of sensitive electronics against electrostatic discharges Metal Oxide Varistor Multilayer Varistor with load dump energy rating AUML 5 ESD Protection XTREME-GUARD™ AXGD up to 30kV while adding virtually no capacitance to the circuit, which (MOV) per SAE specification J1113 helps preserve signal integrity and minimize data loss Protection of sensitive electronics against electrostatic discharges 5 ESD Protection XTREME-GUARD™ AXGD up to 30kV while adding virtually no capacitance to the circuit, which helps preserve signal integrity and minimize data loss 6 ESD Protection Diode Array SM24CAN Industry-standard solution for ESD protection on CAN bus SMD PPTC miniASMD, ASMD Resettable SMD overcurrent protection up to 3A Reverse Polarity Ultra-Low V Schottky Barrier Rectifier meets the general requirements 7 F Protection Schottky Diode DST of automotive applications by providing high temperature capability, low leakage and low forward voltage drop to 100V and 10A Ultra-Low V Schottky Barrier Rectifier meets the general requirements Reverse Blocking/ F Schottky Diode DST of automotive applications by providing high temperature capability, TPSMD Diode MLA Auto Multilayer Varistor XTREME-GUARD™ ESD Suppressor 8 Output Rectification low leakage and low forward voltage drop to 100V and 10A

Littelfuse.com 14 © 2018 Littelfuse, Inc. • Specifications are subject to change without notice Littelfuse.com 15 © 2018 Littelfuse, Inc. • Specifications are subject to change without notice Applications

ENGINE COOLING SYSTEM INFOTAINMENT AND NAVIGATION Engines depend on a steady flow of cooling fluid to maintain optimal Entry-level cars today integrate advanced electronic systems that were performance. Engine cooling systems need protection against threats once more typical of high-end cars, including infotainment, telematics such as load dump, surges, ESDs and overheating. The growing range and connectivity. Potential threats to these advanced systems include of Littelfuse solutions includes TVS Diodes and Diode Arrays, MLVs, overcurrents, ESD and surges. Littelfuse delivers comprehensive protection MOVs, Schottky Diodes and SMD PPTCs. solutions, including SMD Fuses, SMD PPTCs, TVS Diodes and Diode Arrays, MLVs and XTREME-GUARD™ ESD Suppressors.

12V USB AUX Port DC Output Charging Port(s) 1 2 Surge Power 2 4 4 1 3 Protection Supply 1 5 7 4 Engine Display 1 5 12V 3 4 DC/DC Application Controller/Microcontroller Battery ESD 3 2 LIN/PWM I/O Protection 7 8 4 Cameras 7

Microcontroller 5

4 5 4 5 4 Valve Heat Exchanger Cellular – V2X Module GPS Input WiFi Bluetooth 6 LTE, GSM, etc.

6 6 6 6 6 ©2018 Littelfuse, Inc. Specifications are subject to change without notice. ©2018 Littelfuse, Inc. Specifications are subject to change without notice. Function Product Family Product Series Product Description Function Product Family Product Series Product Description TVS Diode for ISO7637-2 5a/5b and ISO16750 load dump TVS Diode SLD8 protection with peak pulse capability of 7000W 1 Overcurrent Protection SMD Fuse 437A, 440A, 441A SMD Fuses for overcurrent Protection up to 63V and 8A Load Dump Protection Multilayer Varistor Multilayer Varistor with load dump energy rating per 2 Overcurrent Protection SMD PPTC ASMD, miniASMD Resettable SMD overcurrent protection up to 3A AUML 1 (MLV) SAE specification J1113 TPSMA, TPSMB, TVS Diode for secondary induced transient voltages with TVS Diode TPSMA, TPSMB, TVS Diode for secondary induced transient voltages with peak TPSMC, TPSMD peak pulse capability from 400W to 5000W Standard Surge Protection TVS Diode TPSMC, TPSMD pulse capability from 400W to 5000W 3 Overvoltage Protection Multilayer Varistor (MLV) MLA Auto Voltage suppression Varistor up to 120Vdc and 8/15kV ESD capability Ultra-Low V Schottky Barrier Rectifier meets the general Multilayer Varistor with load dump energy rating per Reverse Blocking/ F Multilayer Varistor (MLV) AUML Schottky Diode DST requirements of automotive applications by providing high SAE specification J1113 2 Output Rectification temperature capability, low leakage and low forward voltage drop Uni- and bi-directional ESD protection Diode TVS Diode Array AQ1 General purpose ESD Diodes in multiple package options ESD/Surge Protection with 30pF and 30kV ESD capability PWM (IO) Protection TVS Diode Array AQ1 4 and ESD capability of 30kV 3 Multilayer Varistor (MLV) MLA Auto Voltage suppression Varistor up to 120Vdc and 8/15kV ESD capability Industry-standard solution for ESD and Protection of high-speed digital data lines. LIN Bus ESD Protection TVS Diode Array AQ24C ESD Protection TVS Diode Array AQ3 surge protection for LIN bus 5 Discrete and array options for low capacitance available Switching Element Metal Oxide Varistor Radial-leaded MOV with up to 10kA surge current and 2.5kV 4 AUMOV Protection of sensitive electronics against electrostatic discharges Protection (MOV) isolation voltage capability up to 125°C 6 ESD Protection XTREME-GUARD™ AXGD, SESD up to 30kV while adding virtually no capacitance to the circuit, which 5 Reverse Polarity Protection SMD PPTC ASMD, miniASMD Resettable SMD overcurrent protection up to 3A helps preserve signal integrity and minimize data loss TPSMA, TPSMB, TVS Diode for secondary induced transient voltages with SMD PPTC miniASMD, ASMD Resettable SMD overcurrent protection up to 3A Standard Surge Protection TVS Diode 6 TPSMC, TPSMD peak pulse capability from 400W to 5000W Reverse Polarity Ultra-Low V Schottky Barrier Rectifier meets the general requirements 7 F SMD PPTC miniASMD, ASMD Resettable SMD overcurrent protection up to 3A Protection Schottky Diode DST of automotive applications by providing high temperature capability, low leakage and low forward voltage drop to 100V and 10A Ultra-Low VF Schottky Barrier Rectifier meets the general 7 Reverse Polarity Protection requirements of automotive applications by providing high Ultra-Low V Schottky Barrier Rectifier meets the general requirements Schottky Diode DST Reverse Blocking/ F temperature capability, low leakage and low forward voltage Schottky Diode DST of automotive applications by providing high temperature capability, low 8 Output Rectification drop to 100V and 10A leakage and low forward voltage drop to 100V and 10A

Littelfuse.com 16 © 2018 Littelfuse, Inc. • Specifications are subject to change without notice Littelfuse.com 17 © 2018 Littelfuse, Inc. • Specifications are subject to change without notice Applications

VEHICLE COMMUNICATION CAMERAS V2V and V2I will provide new levels of safety and efficiency by sharing data on External cameras support ADAS functions like Lane Departure Warning while vehicle locations and speed/direction, as well as receiving information from smart interior cameras support eye tracking to prevent accidents due to drowsiness traffic signals. On-board power and communication circuits in these systems need of the driver. In addition to protection against common electrical threats, data overcurrent, ESD and surge protection using Fuses, PPTCs, TVS Diodes and Diode and communication buses require protection that does not interfere with high- Arrays, MLVs and Polymer ESD Suppressors. frequency video signals. Littelfuse solutions include TVS Diodes and Diode Arrays, MLVs, Schottky Diodes and SMD PPTCs.

5 1 2 GPS 1 2 7 V2X Processor Overcurrent Protection 12V Battery DC / DC RF Transceiver 12V Surge Power V2X Baseband 3 V2X Protection Supply 6 7 5 6 I/O Vehicle 1 Transceiver (Vehicle-Based V2X) CAN, LIN 4 4 3 4 ESD ESD Communication CAN Transceiver Lines Protection Protection Infrastructure-Based V2X Ethernet, etc. 5 5 Serializer 1 2 GPS V2X 1 V2X Processor V2X Processor 12V Battery DC / DC RF Transceiver RF Transceiver Power Source V2X Baseband V2X Baseband 3 V2X 3 3 5 Control Unit (DSP) 6 7 ESD 5 Ethernet Transceiver Protection Image Sensor I/O Vehicle 2 Transceiver (Vehicle-Based V2X) CAN, LIN 4

©2018 Littelfuse, Inc. Specifications are subject to change without notice. Function Product Family Product Series Product Description Function Product Family Product Series Product Description TVS Diode for ISO7637-2 5a/5b and ISO16750 load dump TVS Diode SLD8 Overcurrent Protection SMD Fuse 437A, 440A, 441A SMD Fuses for overcurrent Protection up to 63V and 8A protection with peak pulse capability of 7000W 1 Load Dump Protection Multilayer Varistor with load dump energy rating 2 Overcurrent Protection SMD PPTC ASMD, miniASMD Resettable SMD overcurrent protection up to 3A Multilayer Varistor (MLV) AUML 1 per SAE specification J1113 TPSMA, TPSMB, TVS Diode for secondary induced transient voltages with Overvoltage Protection TVS Diode TPSMA, TPSMB, TVS Diode for secondary induced transient voltages 3 TPSMC, TPSMD peak pulse capability from 400W to 5000W Standard Surge Protection TVS Diode TPSMC, TPSMD with peak pulse capability from 400W to 5000W AQ1, AQ3, Broad selection of robust ESD Diodes to protect general-purpose, Ultra-Low V Schottky Barrier Rectifier meets the general TVS Diode Array Reverse Blocking/ F SM24CAN, AQxx high-speed and legacy automotive communication buses Schottky Diode DST requirements of automotive applications by providing high 4 ESD/Surge Protection 2 Output Rectification temperature capability, low leakage and low forward voltage drop Multilayer Varistor (MLV) MLA Auto Voltage suppression Varistor up to 120Vdc and 8/15kV ESD capability Uni- and bi-directional ESD protection Diode with High Speed ESD Protection TVS Diode Array AQ3, SESD Protection of sensitive electronics against electrostatic discharges up 3 0.5pF and 3/5A peak current capability ESD Protection XTREME-GUARD™ AXGD to 30kV while adding virtually no capacitance to the circuit, which helps 5 CAN Bus ESD Protection TVS Diode Array SM24CAN Industry-standard solution for ESD protection on CAN bus preserve signal integrity and minimize data loss 4 Low-capacitance ESD Diodes are used in high-speed interfaces, Standard Surge TPSMA, TPSMB, TVS Diode for secondary induced transient voltages with 5 Ethernet Protection TVS Diode Array AQ3, SESD TVS Diode to ensure ESD protection and signal integrity 6 Protection TPSMC, TPSMD peak pulse capability from 400W to 5000W SMD PPTC ASMD, miniASMD Resettable SMD overcurrent protection up to 3A SMD PPTC miniASMD, ASMD Resettable SMD overcurrent protection up to 3A Ultra-Low V Schottky Barrier Rectifier meets the general Reverse Polarity F 6 requirements of automotive applications by providing Reverse Polarity Protection Schottky Diode DST Ultra-Low VF Schottky Barrier Rectifier meets the general requirements high temperature capability, low leakage and low forward 7 Protection Schottky Diode DST of automotive applications by providing high temperature capability, voltage drop to 100V and 10A low leakage and low forward voltage drop to 100V and 10A 7 Short Circuit Protection SMD PPTC ASMD, miniASMD Resettable SMD overcurrent protection up to 3A

Littelfuse.com 18 © 2018 Littelfuse, Inc. • Specifications are subject to change without notice Littelfuse.com 19 © 2018 Littelfuse, Inc. • Specifications are subject to change without notice Applications

BATTERY MANAGEMENT SYSTEM ON-BOARD BATTERY CHARGER The Battery Management System (BMS) maintains the safe operation of the Hybrid and electric vehicle batteries can be recharged from standard power outlets high voltage battery and can relay information about the battery to power and by using an AC-DC converter system, or directly from DC power that is covered energy management systems. The BMS requires protection from threats such outside of the vehicle for faster charging. Design challenges include protecting as overcurrents, surges and ESD. Fuses, TVS Diodes and Diode Arrays keep against overcurrents, overvoltages and ESD, as well as controlling switching of the this system reliable and safe under all conditions (assembly, maintenance and input rectifiers. Littelfuse offers a broad range of High Voltage Fuses, Varistors, GDTs, normal operation). Switching Thyristors and TVS Diodes and Diode Arrays to address these threats.

Module 1 Li Cells 5 High Voltage OBC – + – + – + – + – + – + – + – + – + Main Fuse Contactor/ 1 2 3 4 5 Main Switch L1 L2 AC DC+ 7 Input PFC / DC HV Temp Cell Balancing & Protection Cell Balancing & Protection L3 DC / DC N Filter DC Link Cap DC- Battery Proprietary Sense Lines PE 1 3 6 Cell Cell Micro- 6 Monitor Monitor controller 4 Control Unit Daisy Chain I/F

Function Product Family Product Series Product Description Temp Cell Balancing & Protection Cell Balancing & Protection Low current Fuse with ratings 10-50A and 500Vdc Proprietary Sense Lines OHEV, 10EV Module X 6 6 1 Overcurrent Protection High Voltage Fuse and with different mounting options Cell Cell Micro- BMS/ 20EV High-current xEV Fuse with ratings 60-125A and up to 500Vdc Monitor Monitor controller Charge Controller A combination of Varistors and Gas Discharge Tubes Daisy Chain I/F Varistor + GDT AUMOV, CG2/3 limits transient overvoltages from indirect lightning ©2018 Littelfuse, Inc. Specifications are subject to change without notice. (Gas Discharge Tube) up to 20kA impulse discharge current 2 Overvoltage Protection Function Product Family Product Series Product Description Designed specifically to protect sensitive electronic TVS Diode 30KPA-HR equipment from voltage transients induced by lightning SMD Fuses for overcurrent Protection up to 63V and 8A. High voltage SMD Overcurrent Protection SMD Fuse 437A, 440A, 441A, 885A and other transient voltage events 1 fuses for overcurrent protection up to 450Vdc and 5A Specifically designed for electric vehicle on-board Ceramic fuse up to 10A with 10kA interrupt rating up to 400Vdc. Ceramic fuse Overcurrent Protection Fuse in Wiring Harness Cartridge, 477A charger applications. Its excellent AC handling capability 2 0.5A to 16A with 400A / 1.5kA interrupt rating up to 400Vdc Rectification Switching Thyristor S8016xA 3 and surge robustness makes this series an ideal switch TPSMA, TPSMB, TVS Diode for secondary induced transient voltages with peak pulse capability Overvoltage Protection TVS Diode for these input rectifiers 3 TPSMC, TPSMD from 400W to 5000W Designed specifically to protect sensitive electronic Uni- and bi-directional ESD protection Diode with 30pF and 30/30kV ESD 4 ESD Protection Diode Array AQ1 4 Overvoltage Protection TVS Diode TPSMB equipment from voltage transients induced by lightning capability and other transient voltage events

Designed specifically to protect sensitive electronic equipment Low current Fuse with ratings 10-50A and 500Vdc Overvoltage Protection TVS Diode TPSMC OHEV, 10EV 5 from voltage transients induced by lightning and other transient voltage events 5 Overcurrent Protection High Voltage Fuse and with different mounting options 20EV High-current xEV Fuse with ratings 60-125A and up to 500Vdc 6 ESD Protection Diode Array SM24CAN Industry-standard solution for ESD protection on CAN bus Designed specifically to protect sensitive electronic Main High-Voltage Overvoltage Protection TVS Diode TPSMB equipment from voltage transients induced by lightning High Voltage Fuse 20EV, 30EV High-current xEV Fuse with ratings 60–250A and up to 500Vdc 6 7 Battery Fuse and other transient voltage events 7 ESD Protection Diode Array SM24CAN Industry-standard solution for ESD protection on CAN bus

AUMOV Varistor S8016xA Switching Thyristor HEV High Voltage Fuse

Littelfuse.com 20 © 2018 Littelfuse, Inc. • Specifications are subject to change without notice Littelfuse.com 21 © 2018 Littelfuse, Inc. • Specifications are subject to change without notice Applications

REMOTE KEYLESS ENTRY COMMUNICATION SYSTEMS - CAN BUS

Remote keyless entry systems include the on-board circuitry that receives signals The CAN bus provides command and control functions through a reliable, fault- from a remote “fob” and unlocks the doors, sounds an alarm, starts the engine, tolerant sensitive interface. Typical applications include engine control, transmission etc. These systems are exposed to electrical threats on both the powered circuits control, anti-lock braking and other mission-critical systems. ESD and induced and the communication lines. Protection includes Fuses, TVS Diodes and Diode surges are the most common threats facing CAN bus systems. Littelfuse TVS Diode Arrays, MOVs, MLVs and ESD Suppressors. Arrays are specifically designed to protect sensitive I/O interfaces.

On Vehicle Unit (Receiver) Tx CAN_H Common 1 Host Rx CAN 12V RF Micro- Control Mode 1 CAN Bus Controller Transceiver Battery Receiver controller Module Choke I/O Lines CAN_L 2 Ref 4 3 ©2018 Littelfuse, Inc. Specifications are subject to change without notice.

Function Product Family Product Series Product Description 4 1 ESD/Surge Protection Diode Array SM24CAN Industry-standard solution for ESD protection on CAN bus

RF Transmitter COMMUNICATION SYSTEMS - LIN BUS

Remote Unit (Transmitter) The LIN bus is typically used for body control functions for applications such as power windows, seat controllers, sun roofs and trunk latches. ESD and induced 3 Coin Cell Micro- surges are the most common threats. Littelfuse TVS Diode Arrays are specifically Buttons designed to protect sensitive I/O interfaces. Battery controller 3

Function Product Family Product Series Product Description LIN Bus LIN LIN Node 1 Overcurrent Protection SMD Fuse 437A, 440A, 441A SMD Fuses for overcurrent Protection up to 63V and 8A 1 TPSMA, TPSMB, TVS Diode for secondary induced transient voltages with Transceiver Connect TVS Diode TPSMC, TPSMD peak pulse capability from 400W to 5000W 2 Overvoltage Protection Metal Oxide Multilayer Varistor with load dump energy rating per SAE AUML Varistor (MOV) specification J1113 General purpose ESD Diodes in multiple package options ©2018 Littelfuse, Inc. Specifications are subject to change without notice. TVS Diode Array AQ1 ESD/Surge Protection and ESD capability of 30kV 3 Function Product Family Product Series Product Description Multilayer Varistor (MLV) MLA Auto Voltage suppression Varistor up to 120Vdc and 8/15kV ESD capability 1 ESD/Surge Protection Diode Array AQ24C Industry-standard solution for ESD and surge protection for LIN bus 4 ESD Protection XTREME-GUARD™ AXGD Surface-mount solution for ESD and induced surge energy

©2018 Littelfuse, Inc. Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/about-us/disclaimer/electronics-products.

Need Product Disclaimer: Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, Image life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse SM24CAN TVS Diode Array SD24C TVS Diode Array TPSMA TVS Diode documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse.

Littelfuse.com 22 © 2018 Littelfuse, Inc. • Specifications are subject to change without notice Littelfuse.com 23 © 2018 Littelfuse, Inc. • Specifications are subject to change without notice Littelfuse.com EC143Nv1018