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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.

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

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 (158)

Image of Littlefuse's HMOV Varistor Series

Varistors for High Temperature and High Surge - HMOV™ Series

Littlefuse's HMOV varistor series can operate at ambient temperatures up to 125°C with 2500 V isolation voltage for various applications.

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Image of Littelfuse's SP3118/SP3130 Series TVS Diode Arrays

TVS Diode Arrays - Ultra-Low Leakage and Capacitance - SP3118 / SP3130 Series

The SP3118 and SP3130 series TVS diode arrays from Littelfuse includes back-to-back TVS diodes fabricated in a proprietary silicon avalanche technology.

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Image of LIttelfuse's TVS Diodes - AEC-Q101 Automotive Qualified 5000 W – TP5KP Series

TVS Diodes - AEC-Q101 Automotive Qualified 5000 W - TP5KP Series

Littelfuse's AEC-Q101 qualified TP5KP series automotive transient voltage suppression (TVS) diodes offer a 5000 W (TP5KP) peak pulse power dissipation rating in a standard P600 axial-lead package.

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Image of Littelfuse TP1.5KE Series AEC-Q101 Automotive Qualified TVS Diodes

TVS Diodes - AEC-Q101 Automotive Qualified 1500 W - TP1.5KE Series

Littelfuse introduces TVS diodes designed specifically to protect sensitive electronic equipment from voltage transients induced by load dump and other transient voltage events.

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Image of Littelfuse's TVS Diode for Compact Low-V Applications SMF3.3 Series

TVS Diode for Compact Low-V Applications - SMF3.3 Series

Littelfuse's SMF3.3 is designed specifically to protect sensitive electronic equipment from voltage transients induced by lighting and other transient voltage events.

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Image of Littelfuse TVS Diode Array - Protect Differential Data Lines - SP3374NUTG

TVS Diode Array - Protect Differential Data Lines - SP3374NUTG

Littelfuse offers its SP3374NUTG TVS diode array which minimizes signal distortion, reduces voltage overshoot, and allows for simpler PDB design.

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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 (22)

Littelfuse Semiconductor Insight

Littelfuse Semiconductor insight, innovation, and impact: the total product ownership experience.

Littelfuse Automotive Electronics

Littelfuse Automotive Electronics: a smartphone on wheels.

LTKAK Series TVS Diode

Littelfuse Foldbak technology provides a clamping voltage lower than the avalanche voltage but above the rated working voltage. As a result, any voltage rise due to increased current conduction is minimized.

Littelfuse Building and Home Automation

Building and Home Automation with Littelfuse

Additional Content

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SPICE Models

Application Notes - View All

Littelfuse CPD Acquired Products

Application Notes

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