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Littelfuse

- Littelfuse (NASDAQ: LFUS) - As the worldwide leader in circuit protection, Littelfuse offers POWR-GARD®, Teccor®, Wickmann®, Pudenz®, Hamlin®, PulseGuard®, SIDACtor®, PolySwitch, 2Pro and PolyZen branded products, with a wide range of technologies such as Fuses and Accessories, PTCs (PolySwitch), GDTs, Varistors, Polymer ESD Suppressors, Surge Protection Modules, TVS Diodes, TVS Diode Arrays (SPA® Diodes), Switching Thyristors, Power Modules, LED Protector, SIDACtor® Protection Thyristor as well as reed switches, relays and Hall Effect sensors. Littelfuse products are backed by more than 88 years of technology innovation, industry leading technical support, design and manufacturing expertise. Littelfuse products are vital components in virtually every product that uses electrical energy, including automobiles, computers, consumer electronics, handheld devices, industrial equipment, and telecom/datacom circuits.

Littelfuse acquires U.S. Sensor, Manufacturer of Temperature Sensors

TVS Diodes

TVS Diodes

Littelfuse TVS diodes are used to protect semiconductor components from high-voltage transients. Learn More

SPA® Family of TVS Diode Arrays

SPA Family of TVS Diodes

Littelfuse SPA family of TVS diode array devices are designed to protect electronics from very fast and often damaging voltage transients. Learn More

Magnetic Sensors and Reed Switches

Sensor Thumbnail

Littelfuse's selection of magnetic sensors includes reed switches, reed sensors, Hall Effect sensors, and reed relays, as well as bare and packaged magnetic actuators. Learn More

Product Listing View All

Image of Littelfuse's Electrical Safety Banner

Featured Products

Image of Littelfuse's LSP Series LED Thermally Protected Surge Protective Device

LSP Series LED Thermally Protected Surge Protective Device

The LSP05 and LSP10 Surge Protection Modules from Littelfuse provide transient overvoltage protection for outdoor and commercial LED lighting fixtures. Learn More

Image of Littelfuse's MG Series IGBT Power Modules

MG Series IGBT Power Semiconductor Modules

An expanded offering of IGBT module power semiconductor products for motor control and inverter applications is now available from Littelfuse. Learn More

Newest Products View All (206)

Image of Littelfuse's 438A Series AECQ-Compliant 0603 Size SMT Fuses

AECQ-Compliant 0603 Size SMT Fuses - 438A Series

Littelfuse's 438A series fuses are AECQ-compliant, fast-acting, and offer excellent temperature stability and performance reliability.

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Image of Littelfuse's 476 Series Subminiature SMT Fuses

Subminiature SMT Fuses Protect LED Lighting - 476 Series

Littelfuse's 476 series of SMT fuses are designed to mainly serve as primary side circuit protection for compact devices with high voltage requirements.

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Image of Littelfuse AQ Series Automotive Qualified TVS Diode Arrays (SPA®)

Automotive Qualified TVS Diode Arrays (SPA®) – AQ Series

Littelfuse's AQ series TVS diode arrays offer a durable approach for protecting data lines, charging lines, control lines, drivetrain, and communication ports.

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Image of Littelfuse MHP-TAT18 Series Hybrid PPTC Battery Mini-Breaker

Hybrid PPTC Battery Mini-Breaker (TCO) – MHP-TAT18 Series

Littelfuse's MHP-TAT18 mini-breaker with resettable thermal cut-off (TCO) helps circuit designers meet battery safety requirements.

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Image of Littelfuse's AUML Series Multilayer Varistors

Automotive AEC-Q200 SMT Multilayer Varistors - AUML Series

Littelfuse's AUML series of surface mount multilayer varistors are designed to protect electronic systems in automobiles from destructive transient voltages.

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Image of Littelfuse's SP1103C Series TVS Diode SPA Array

TVS Diode SPA® Array for I/O ESD Protection – SP1103C Series

Littelfuse's SP1103C series 80 A discrete bidirectional TVS diode array can safely absorb repetitive ESD strikes at ±30 kV without performance degradation.

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Tools and Support

Image of Littelfuse's LED Lighting Surge Protection Modules

LED Lighting Surge Protection Modules Design and Installation Guide

Design Guide for the LSP series SPD Modules, part selection and importance of adding this module to LED lighting applications. Learn More

Image of Littelfuse's Sensors Product Catalog

Sensors Product Catalog and Design Guide

This Guide provides introduction to magnetic sensing and offers practical suggestions for selecting reed switches, reed sensors and Hall effect sensors for a variety of applications. Learn More

Image of Littelfuse's TVS Diode Applications Overview

Transient Voltage Suppressor Application Overview

Application overview of different voltage transients that can occur and how to apply TVS Diode protection. Learn More

Image of Littelfuse's IGBT and Rectifier Diode Modules

IGBT and Rectifier Diode Power Semiconductor Modules Guide

Quick selection guide on circuit type, package type, collector emitter voltage and amperage rating options available IGBT and Rectifier modules. Learn More

Image of Littelfuse's ESD Protection Using TVS Diode Arrays

ESD Protection using TVS Diode Arrays Design Guide

This guide was developed to help designers navigate a selection of appropriate TVS Diode Array circuit protection, includes consideration factors, example circuits and recommended components. Learn More

Image of Littelfuse's Fuseology 101

Introduction to Circuit Protection - Fuseology 101

User friendly Fuseology Selection Guide makes the process quick and easy by helping with all the key parameters in selecting the proper over current protection Fuse or PTC resettable device. Learn More

Product Training Modules View All (16)

protecting network and telecommunication port

Top 5 Design Considerations

Duration: 20 minutes

This presentation will provide the top five criteria to consider when performing a protection need analysis for Network or Telecommunication interface.

Reed Switches

Reed Switch Basics

Duration: 5 minutes

Basic operation, terminology, characteristics, and applications will be discussed, as well Q&A on selecting the proper reed switch

F2393-ND

Fuseology - Introduction to Fuses

Duration: 5 minutes

Fuses are instrumental circuit protection devices designed to serve as overcurrent protectors in a circuit

TVS Diode 14VWM 23.2VC SMA

Transient Voltage Suppression (TVS) Diodes

Duration: 20 minutes

Overvoltage protection general concepts, key parameters of TVS diodes, and a look at Littelfuse's TVS diode families.

Featured Videos View All (26)

Littelfuse MHP-TAT18 Series Breaker | Digi-Key Daily

MHP-TAT18 mini-breaker with resettable thermal cut-off (TCO) from Littelfuse helps circuit designers meet the battery safety requirements of the higher-capacity lithium-ion polymer and prismatic battery cells.

Littelfuse MP8000 Bluetooth Overload Relay

See how the Littelfuse Bluetooth Overload Relay uses the smartphone to protect motors and pumps while saving time and keeping customers safe from arc flash.

Littlefuse 514 Series Fuses | Digi-Key Daily

514 series fuse from Littlefuse is a 6 mm x 32 mm 500 VAC ceramic body fuse with current ratings from 1.6 A to 12.5 A.

SP11xx Series TVS Diode Arrays

Learn more about the Littelfuse SP11xx Series Discrete Unidirectional TVS Diodes.

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