Featured Products
SM10 Series MOVs
High-Surge Surface-Mount Metal Oxide Varistors
Use these AEC-Q200-qualified MOVs to protect primary circuits in batteries and EV chargers from transient voltage surges. Rated up to 230 V ac and 635 V dc, the varistors handle pulses of 6 kV and 3 kA.
59177 Series Reed Switches
Ultra-miniature Overmolded Reed Switches
Supplied in sealed 9x2.5x2.4 mm packages, these normally open SPST reed switches operate with any Littelfuse actuator magnet. Applications include access control, metering, and limit sensing.
Silicon Carbide Power MOSFETs
Surface Mount 1.2 kV SiC MOSFETs for Phase Leg Switching
Engineered to perform high-speed, high-volume switching with little power loss, these metal-oxide–semiconductor field effect transistors can serve as solar inverters and high-voltage dc–dc converters.
SZ1SMCxxA Automotive TVS Diode
Unidirectional TVS Diode for Absorbing 1.5 kW Power Surges
In addition to excellent power absorption capabilities, AEC-Q101–qualified SZ1SMCxxA TVS diodes handle voltage surges up to 16 kV. Applications include vehicles, medical equipment, and power supplies.
AF0025 Series Arc-Flash Relay
Compact Arc-Flash Detection & Protection Solutions
Space-saving AF0025 relays provide ideal solutions for protecting combiner boxes and panels against damaging arc flashes. The relays work in ac or dc systems and feature internal failsafe mechanisms.
ESR Series Battery Fuses
Energy Storage Rack (ESR) Class aBat Fuses
With a 250kA interrupt rating and 300% minimum breaking capacity, the ESR range (125-630A at 1.5kV Dc) provides ideal overcurrent protection for battery racks, inverters, and Dc power applications.
Control Electrical Equipment
Single-Function Relays
Find the device you need to reliably perform a specific function such as changing lamp intensity, varying the speed of a motor, or managing the temperature of a heater.
Electronic On/Off Switches
HCC & HCD Series Definite Purpose Contactors
Look to Littelfuse when your application demands a compact, long-lived contactor controlled by a thermostats, relay, or push button.
Empowering a Sustainable, Connected, and Safer World
Solutions Spotlight
Small Appliance Components
Consult block diagrams to see how we can help you build reliable, energy-efficient, and IoT-enabled robotic vacuums, coffee machines, electric cookers, air purifiers, etc.
Renewable Energy Feature
How Solar Fuses Perform Better
Read how Littelfuse delivered low-cost solar fuses that perform well at high temperatures for a cabling and switching manufacturer.
Solutions Spotlight
Alternative Energy: Green Hydrogen
Learn about green hydrogen production, the latest industry trends, and Littelfuse solutions to build a green hydrogen value chain.
Education & Insights
Electrical Solutions
Improve Safety with Instant Arc-Flash Detection
See Littelfuse Arc-Flash Relays and read examples of relays protecting critical equipment.
BESS Capabilities
Explore Our Battery Energy Storage Systems Capability Guide
Learn how battery energy storage systems make large renewable energy projects more practical.
Automotive World 2025 Japan
A combination of exhibitions covering automotive electronics, connected car, autonomous driving and EV/HV/FCV.
BAUMA
BAUMA is the World's Leading Trade Fair for Construction Machinery, Building Material Machines, Mining Machines, Construction Vehicles and...
TTape™ Platform Award 2024
Littelfuse TTape™ platform has been awarded the 2024 Innovation Award – Best Product, Passive Components from Tecniche Nuove Media. This award...
Littelfuse to Release Fourth Quarter Financial Results After Market Close on January 28
Littelfuse, Inc. (NASDAQ: LFUS), a diversified, industrial technology manufacturing company empowering a sustainable, connected, and safer world,...