Introducing Residual Current Protection
Western Automation products are now on Littelfuse.com. Discover advanced protection solutions for safer EV charging systems.
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Littelfuse Acquires Basler Electric
Their expertise and long history in power protection and control solutions strongly complement the Littelfuse portfolio in energy and industrial infrastructure markets.
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Learn Temperature Sensor Essentials
Explore expert resources on temperature sensors—design tips, tutorials, and educational content to boost your knowledge and improve sensor applications.
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Electric Two and Three Wheeler Solutions
Littelfuse provides advanced circuit protection and sensing solutions for Li-ion battery systems in two-and three-wheeler electric vehicles.
Learn MoreFeatured Products
IX4352NEAU Gate Driver
Automotive Gate Driver with Negative Gate Bias & Protections
AEC-Q100 qualified gate driver with separate 9 A source/sink outputs, integrated protections, and an internal charge pump delivering −10 V bias for robust, high-dv/dt EV inverter designs.
K5V Series Tactile Switch
Sharp Tactile Feedback with Integrated LEDs
High-reliability tactile switch with gold-plated contacts and integrated LEDs. Long travel with crisp tactile/audible feedback in a compact footprint for status indication.
59150 Flange-Mount Reed Sensor
Compact, Sealed Sensor for Harsh or Concealed Environments
Compact, IP67-sealed reed sensor rated to 265 Vac/300 Vdc. Enables reliable non-contact sensing in space-constrained designs requiring low power operation and resistance to moisture and contaminants.
LFRU Fuse Reducers
Adaptable, Cost-Saving Fuse-to-Clip Solutions
Adapts lower-rated fuses into higher-rated clips to prevent overfusing and simplify inventory. Ideal for transformers, VSDs, MCCs, and test or temporary current-limiting applications.
Residual Current Protection
EV Charging Protection
Compact and reliable, these monitors detect AC and DC leakage in EV charging systems in real time—preventing hazards and ensuring continuous safety.
Empowering a Sustainable, Connected, and Safer World
Success Story
Smart Protection for Smarter Flossers
A health care OEM designing a compact, USB-C rechargeable water flosser needed to manage overcurrent, overheating, and moisture risks—without compromising space or safety.
Success Story
Sealed Tactile Switch Powers Reliability
A power tool manufacturer needed a durable, compact switch to activate the battery-level indicator on its next-gen cordless drill.
Success Story
TVS Diodes Fortify USB-C Ports
A leading laptop manufacturer needed to protect USB Type-C ports from ESD, surges, and other transients without compromising signal integrity or consuming excess board space.
Education & Insights
Technical Paper
How to Size a Heatsink for Industrial Solid State Relays
Use this guide to select the right heatsink for panel-mounted SSRs using practical thermal methods.
Selection Guide
Quick Fuse Selection Guide
Find the right fuse for your electronic applications.
Energy Storage Summit
Littelfuse will highlight protection, sensing, and power control solutions for energy storage applications.
Littelfuse Reports Fourth Quarter and Full Year 2025 Results
Fourth Quarter Highlights: (Year-over-year comparisons unless otherwise noted) Net sales of $594 million, +12%; organic growth contributed +7% Cash...
Littelfuse to Release Fourth Quarter Financial Results Before Market Open on January 28
Littelfuse, Inc. (NASDAQ: LFUS), a leader in developing smart solutions that enable safe and efficient electrical energy transfer, announced today...