Industrial Solid-State Relays

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

Learn more

Industry’s First Asymmetrical TVS Diode

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

Learn more

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.

Learn more
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

Learn more

NanoT Tactile Switch

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

Learn more

America's Most Responsible Companies 2024

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

Read More

Connect with us at electronica 2024

November 12-15, 2024
Munich, Germany
Hall C3, Booth 340

Learn more
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.

Learn more
Q3 2024 Earnings Call

Earnings Conference Call

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

Join the Webcast

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.

Read More

America's Most Responsible Companies 2024

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

Read More