Littelfuse Empowers a Sustainable, Connected and Safer World

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Thousands of customers trust Littelfuse with their electronics products needs
for safer, more reliable and higher performance in industrial, electronics and
transportation applications. As a designer, manufacturer and global leader,
Littelfuse provides superior circuit protection, power semiconductor, switching
and control, sensing and transportation solutions.

Featured Product

Whether it’s circuit protection, sensing or switching and control, Littelfuse has
the innovation and technology to empower a more sustainable, better
connected and safer world.

Circuit Protection Solutions

Littelfuse offers the broadest portfolio of circuit protection solutions providing
industry standards expertise and application testing capabilities and a global
network of expertise to help meet customer challenges for eMobility, industrial automation, data centers and more.

Littelfuse Fuses

Fuses

Littelfuse Power Semiconductor Fuses

Power Semiconductor
Fuses

Littelfuse Resettable PPTC

Resettable PPTCs

Littelfuse Varistor

Varistors

Littelfuse Gas Discharge Tubes

Gas Discharge Tubes

Littelfuse SIDACtor

SIDACtor

Littelfuse TVS Diodes and  Diode Arrays

TVS Diodes and
Diode Arrays

Littelfuse Surge Protection

Surge Protection

Littelfuse Solar Fuses

Solar Fuses

Power Semiconductor Solutions

Littelfuse’s wide range of discrete devices and power modules include
extensive packaging capabilities and standard and customer assemblies
(standard sub-assemblies for multi-megawatt power systems) for industrial
motor drives, EV charging infrastructure and renewable energy applications.

Littelfuse Discrete IGBT Transistors

Discrete IGBT
Transistors

Littelfuse Discrete MOSFETs

Discrete MOSFETs

Littelfuse Silicon Carbide  MOSFETs

Silicon Carbide
MOSFETs

Littelfuse Power Modules

Power Modules

Littelfuse Gate Drivers

Gate Drivers

Littelfuse Discrete Thyristors

Discrete Thyristors

Littelfuse Discrete Diodes

Discrete Diodes

Littelfuse Surface Mount Power  Devices (SMPD) -  MOSFET, Rectifiers, IGBT

Surface Mount Power
Devices (SMPD) -
MOSFET, Rectifiers, IGBT

Standard and Customized Sensing Solutions

A global leader in magnetic sensing, Littelfuse also offers a broad range of
temperature sensing products including thermistors, RTDs and digital
temperature indicators for smart meters, battery management, automotive,
EV and HVAC

Littelfuse Reed Sensors

Reed Sensors

Littelfuse Hall Effect Sensors

Hall Effect Sensors

Littelfuse TMR Series Sensors

TMR Series Sensors

Littelfuse NTC Thermistors

NTC Thermistors

Littelfuse RTD Industrial Temp  Sensors

RTD Industrial Temp
Sensors

Littelfuse Digital Temperature Indicators

Digital Temperature
Indicators

Littelfuse Temperature Probe and Assemblies

Temperature Probe
and Assemblies

Switching and Control Solutions

Littelfuse delivers an enhanced portfolio of reed relays (switching voltages up
to 2500V), industry’s broadest line of SSRs and a wide array of protection
relays and controls for industrial, HVAC systems, building automation and
motor and pump control

Littelfuse Solid State Relays

Solid State Relays

Littelfuse Reed Relays

Reed Relays

Littelfuse Arc-Flash Relays

Arc-Flash Relays

Littelfuse Industrial Relays

Industrial Relays

Littelfuse Ground Fault Relays

Ground Fault Relays

Littelfuse Motor and Pump Protection

Motor and Pump Protection

Littelfuse Industrial GFC

Industrial GFC

Transportation Solutions

Littelfuse provides a wide range of circuit protection solutions (AEC-Q
qualification and PPAP capability), extensive sensing options, standard and
custom power distribution modules and DC solenoid relays for battery
disconnection, ignition, windshield wipers and more.

Littelfuse Automotive Fuses

Automotive Fuses

Littelfuse Power Distribution Module

Power Distribution
Module

Littelfuse Switches

Switches

Littelfuse DC Solenoid Relays

DC Solenoid Relays

Littelfuse Ignition IGBT Transistors

Ignition IGBT Transistors

Littelfuse Automotive Sensors

Automotive Sensors

Resources

Littelfuse Capability Brochure

IXYS, A Littelfuse Technology Product Line Card

Tech Spec Videos

Reed Relays

Surge Protection Devices