- Littelfuse products are vital components in applications that use electrical energy, from consumer electronics to vehicles and industrial facilities. They offer the industry’s broadest and deepest portfolio of circuit protection products, with growing platforms in power control and sensing. They are expanding into adjacent markets as part of their corporate strategy of accelerated organic growth and strategic acquisitions. These markets include power semiconductors, heavy-duty switches, magnetic, optical, electromechanical, and temperature sensors; and products that provide safe control and distribution of electrical power. Related Product brands: IXYS Corporaton, IXYS Integrated Circuits Division, IXYS RF, MicroWave Technology, U.S. Sensor

TVS Diodes

TVS Diodes

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

Power Semiconductor - Silicon Carbide (SiC)

Image of Littelfuse's Power Control Silicon Carbide

Silicon Carbide (SiC) devices in power electronics feature fast switching times, high blocking voltage capabilities, and the ability to operate at high temperatures. Learn More

Magnetic & Temperature Sensors – Reed, NTC, RTD

Sensor Thumbnail

Littelfuse's Sensor Portfolio includes Magnetic and Temperature sensors: Reed switches, Reed sensors, Hall Effect sensors, Reed relays, NTC thermistors and RTDs as well as bare and packaged magnetic actuators. Learn More

Product Listing View All

Spotlight Videos

Image of Littelfuse's MP8000 Bluetoth Overload Relay

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. Learn More

Image of Littelfuse's Surge Protection Modules

Littelfuse Surge Protection Modules LSP10GIHP

LED protection optimization using Littelfuse Surge Protectors. Learn More

Newest Products View All (252)

Ultra-Low Capacitance TVS Diode Arrays for Ultra-High-Speed Interfaces - SP3208/SP3213 Series

Littelfuse’s SP3208 and SP3213 series provide a lower nominal capacitance, which helps preserve signal integrity and minimize data loss. Learn More

TVS Diode Array 30 kV ESD Protection for Industrial Equipment - SP1305 Series

Littlefuse’s SP1305 series TVS diode array 30 kV ESD protection for industrial equipment. Learn More

SIDACtor® High-Power 100 A, 6 V Protection Thyristor - PxxxxS4xLRP Series

Littelfuse's SIDACtor high-power 100 A, 6 V protection thyristor PxxxxS4xLRP series is used to protect equipment from damaging overvoltage transients. Learn More

Sensitive Gate SCR for Ground Fault Circuit Interrupters - SxX8BBS Series

Littelfuse's sensitive gate SCR for direct microprocessor interface offers blocking voltage capability up to 600 V specially designed for GFCI applications. Learn More

NANO²® High-Current Subminiature Fuse - 456SD Series

Littelfuse's 456SD Series NANO² fuse is a small sized, surface-mountable high current fuse which provides surge current protection. Learn More

TVS Diode Array - AQ24CANA Series (Automotive Grade)

Littelfuse's AQ24CANA series TVS diode array is designed for general purpose ESD protection and is ideal for automotive applications. Learn More

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

Recent PTMs View All (21)

Thermally Protected MOVs - TMOVs Publish Date: 2018-07-09

An introduction to basic operation, electrical characteristics, product portfolio, features and benefits, and applications for TMOVs.

Duration: 5 minutes
Resistance Temperature Detectors Publish Date: 2017-03-03

Introduction of the Littelfuse thin film platinum resistance temperature detectors

Duration: 5 minutes
Top 5 Design Considerations Publish Date: 2016-02-01

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

Duration: 20 minutes
Reed Switch Basics Publish Date: 2015-10-20

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

Duration: 5 minutes

Featured Videos View All (41)

Littelfuse TPSMB Series TVS Diodes | Digi-Key Daily

TPSMB series transient voltage suppression (TVS) diode from Littelfuse provides secondary protection of sensitive automotive and other electronics from transients induced by load dump and other transient voltage events.

SPD – Type 2 - Surge Protection Devices

This video will discuss SPD – Type 2 - Surge Protection Devices

Building Automation – Protect/Sense/Control

Building Automation – Protect/Sense/Control

POWR-SPEED® High-Speed Square Body Fuses - PSR Series

POWR-SPEED® fuses specifically designed for protection of power semiconductor devices such as diodes, triacs, IGBTs, SCRs, MOSFETs and other solid state devices that are typically designed into power conversion and power conditioning equipment.

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