Industrial Solid-State Relays

Get up to 3X more performance with higher thermal efficiency.

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Industry’s First Asymmetrical TVS Diode

Ideal for high-efficiency power solutions in data center, EV infrastructure, and industrial equipment

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Cole Hersee 100 Year Anniversary

Since 1924, the Cole Hersee brand has been a leader in the development of heavy-duty electrical products for the vehicle industry – collaborating on many industry standards and earning a reputation for quality and value.

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Ultra Junction X4-Class Power MOSFET

Ultra Junction X4-Class Power MOSFET

Delivers industry-leading low on-state resistance, enabling simplified design and enhanced performance in battery energy storage and power supply applications

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NanoT Tactile Switch

Designed for next-gen smart wearables, wireless headsets, medical devices, and IoT applications

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America's Most Responsible Companies 2024

Newsweek named Littelfuse one of America’s Most Responsible Companies.

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EITS Series Tactile Switch

EITS Series Tactile Switch

Surface-mount and through-hole options with multiple LED colors and markings enable seamless integration in telecom, data center, and professional audio/video equipment markets.

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NEW! Sealed ZCASE®

NEW! Sealed ZCASE®

This fuse holder series provides robust electrical distribution for up to 6 ZCASE® fuses. Designed to withstand harsh environmental conditions, it ensures reliable performance in demanding applications with its durable, sealed construction.

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Q3 2024 Earnings Call

Earnings Conference Call

Wednesday, October 30, 2024
10:00 a.m. ET • 9:00 a.m. CT

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Explore Our eCatalog Site and Find the Right Solution for Your Application

Access our product solution guides in an interactive mobile friendly format on our eCatalog site.

eCatalogs Library

SRP1 Series Broadens Our Switching Expertise

Littelfuse has a broad line of on-board and off-board solid-state relays. The industrial products are ideal for commercial food & beverage equipment, and more.

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America's Most Responsible Companies 2024

Newsweek named Littelfuse one of America’s Most Responsible Companies.

Read More