Littelfuse

Littelfuse is the preferred brand for leading manufacturers around the world. With more than 40 sales, manufacturing and engineering facilities and a global network of distribution channels, Littelfuse is set up to become your one stop shop.

About Littelfuse

Littelfuse has expanded its range of product offerings to provide innovative circuit protection, power control and sensing solutions for your application.

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Founded in 1927, Littelfuse has a strong history of innovation, proven technical expertise and the industry's broadest and deepest portfolio of circuit protection products. As a leader in circuit protection solutions, Littelfuse's products are vital components in virtually every market that uses electrical energy especially in the electronics, automotive and electrical industries. Littelfuse is able to provide objective, comprehensive solutions for each customer's unique needs even beyond circuit protection with their recent expansion of their portfolio and expertise, bringing on a range of new power control solutions with applications in communications, mobile computing and beyond.

Littelfuse Product Categories View all Products

Product categories

Circuit Protection

26,396 Products
Littelfuse Circuit Protection 26,396 Products

Circuit protection is utilized to ensure that key components of an electrical system are properly protected from unforeseen circumstances. General practice consists of adding components that act as a failsafe, or “weakest link”, or components that prevent unwanted current flow, such as diodes.
- 26,396 Products
Electromechanical Switches

9,323 Products
Littelfuse Electromechanical Switches 9,323 Products
- 9,323 Products
- Switch Snap Action (416)
  
  Switch Rotary (555)
  
  Switch Push Button (1,090)
  
  Switch Thumb-Pushwheel (61)
  
  Switch KeyLock (192)
  
  Switch Toggle (2,725)
  
  Switch Rocker (1,134)
  
  Switch Safety Interlock (65)
  
  Switch Key (267)
  
  Switch Detector (62)
  
  Switch Indicators (5)
  
  Switch Accessories (421)
  
  Switch Selector (19)
  
  Switch Reed (255)
  
  Switch Foot (4)
  
  Switch Emergency Stop (2)
  
  Dimmers (6)
  
  Switch DIP (397)
  
  Switch Slide (533)
  
  Switch Tactile (1,006)
  
  Switch Other (108)
Diodes, Transistors and Thyristors

5,063 Products
Littelfuse Diodes, Transistors and Thyristors 5,063 Products
- 5,063 Products
Relays

1,877 Products
Littelfuse Relays 1,877 Products
- 1,877 Products
- Reed Relays (62)
  
  Time Delay Relays (534)
  
  Contactors (118)
  
  Relay Sockets (9)
  
  Solid State Relays - SSRs (566)
  
  Relays Other (570)
  
  Power Relays (18)
Sensors

1,112 Products
Littelfuse Sensors 1,112 Products
- 1,112 Products
- Thermistors (582)
  
  Industrial Pressure Sensors (2)
  
  Temperature and Humidity Sensors (20)
  
  Proximity Sensors (325)
  
  Current Sensors (89)
  
  Ambient Light Sensors (6)
  
  Specialized Sensors (1)
  
  Magnetoresistive Sensors (9)
  
  Hall Effect Sensors (34)
  
  Sensor Accessories (32)
  
  Angular and Linear Position Sensors (1)
- Level Sensors
  
  Float and Level Sensors (11)
Connectors

886 Products
Littelfuse Connectors 886 Products

The best circuit in the world would be a paperweight without means of connecting to a larger system. Whether you need a ruggedized connector that can carry hundreds of amps or a low profile connector to blend seamlessly into a light fixture, Arrow's extensive portfolio will help you get connected.

7 Questions to Ask When Choosing a Connector

Beyond the RJ45: Connectors in Networking

Connector Resistance: When it Helps and When it Hurts
- 886 Products
Resistors

454 Products
Littelfuse Resistors 454 Products
- 454 Products
LEDs and LED Lighting

185 Products
Littelfuse LEDs and LED Lighting 185 Products
- 185 Products
- Lighting Protection
  
  LED Protection Devices (185)
Power Management

149 Products
Littelfuse Power Management 149 Products

Power management ensures that the system you are operating runs at efficient rates and uses low energy when allowable. Such technology is often seen in, but is by no means restricted to, common electrical appliances, computers, screens and GPUs, IOT systems, and other power conservation systems.
- 149 Products
Optoelectronics

103 Products
Littelfuse Optoelectronics 103 Products
- 103 Products
Wire and Cable

101 Products
Littelfuse Wire and Cable 101 Products
- 101 Products
Magnetics

82 Products
Littelfuse Magnetics 82 Products
- 82 Products
- Transformers
  
  Current Transformers (59)
- Inductors
  
  Inductor Surface Mount (23)
Kits and Tools

62 Products
Littelfuse Kits and Tools 62 Products
- 62 Products
- Development Kits and Tools (6)
  
  Component Kits (56)
EMI/RFI Suppression

44 Products
Littelfuse EMI/RFI Suppression 44 Products
- 44 Products
- EMI/RFI Electronics
  
  EMI Filters (1)
  
  Common Mode Chokes - CMCs (42)
- Ferrites
  
  Ferrite Beads (1)
Other

44 Products
Littelfuse Other 44 Products
- 44 Products
- Custom Parts (1)
  
  Misc Products (43)
Fasteners and Hardware

28 Products
Littelfuse Fasteners and Hardware 28 Products
- 28 Products
Motion Control and Fluid Power

27 Products
Littelfuse Motion Control and Fluid Power 27 Products
- 27 Products
- Actuators
  
  Solenoids (27)
Drivers and Interfaces

13 Products
Littelfuse Drivers and Interfaces 13 Products
- 13 Products
Computer Products

10 Products
Littelfuse Computer Products 10 Products
- 10 Products
- Computer Peripherals
  
  Joysticks (9)
- Software
  
  Software Services (1)
Tools

9 Products
Littelfuse Tools 9 Products
- 9 Products
- Tools Other (7)
  
  Crimpers (2)
Communication

7 Products
Littelfuse Communication 7 Products
- 7 Products
- Other
  
  Communication Misc (7)
Audio Components

7 Products
Littelfuse Audio Components 7 Products
- 7 Products
- Audio Indicators and Alerts (7)
Power Supplies

5 Products
Littelfuse Power Supplies 5 Products

Until someone perfects the perpetual motion machine, every device will continue to need a power supply. Whether your application calls for a simple switcher or a highly precise, multi-output controller, Arrow will put the power in your hands.
- 5 Products
- Power Supply Accessories (2)
  
  Power Distribution Units (3)
Batteries and Accessories

5 Products
Littelfuse Batteries and Accessories 5 Products
- 5 Products
- Batteries (1)
  
  (4)
Electronic Switches

4 Products
Littelfuse Electronic Switches 4 Products
- 4 Products
- Switches and Multiplexers
  
  Analog Switch Multiplexers (4)
Microcontrollers and Processors

2 Products
Littelfuse Microcontrollers and Processors 2 Products
- 2 Products
- Microcontrollers
  
  Microcontrollers - MCUs (1)
- Processors
  
  Microprocessors - MPUs (1)
Thermal Management

2 Products
Littelfuse Thermal Management 2 Products
- 2 Products
- Accessories
  
  Thermal Management Accessories (2)
Electromechanical Encoders

2 Products
Littelfuse Electromechanical Encoders 2 Products
- 2 Products
- Optical Encoders (2)
Data Acquisition

1 Products
Littelfuse Data Acquisition 1 Products
- 1 Products
- Digital Potentiometers (1)
Controllers

1 Products
Littelfuse Controllers 1 Products
- 1 Products
- Ethernet
  
  Ethernet Controllers (1)
Capacitors

1 Products
Littelfuse Capacitors 1 Products

Capacitors have a simple role - to store and release energy - but the type of capacitor you need will vary by application. From decoupling to valley fill, from tiny ceramic capacitors to supercapacitors, Arrow has you covered.
- 1 Products
- Fixed Capacitors
  
  Capacitor Ceramic Multilayer (1)
Mechanical Power Transmission

No Products
Littelfuse Mechanical Power Transmission No Products
- No Products
Test and Measurement

No Products
Littelfuse Test and Measurement No Products
- No Products
- Electrical and Electronic Test Equipment

View All

Featured Products

59025-010

Littelfuse

Proximity Sensor Reed NO 3.81mm 200VDC 2-Pin

Per Unit

RF2945-000

Littelfuse

ESD Suppressor TVS Bi-Dir 7V 2-Pin DFN T/R Automotive AEC-Q101

Per Unit

Littelfuse Datasheets View All

Littelfuse Datasheets View All
Part No.	View/Download	Type
Datasheet for 1 product: View LB100GFCI	View Datasheet View products
Datasheet for 481 products: View 59070-3-V-05-E 59070-3-S-05-E 59070-3-U-03-C	View Datasheet View products	Proximity Sensors
Datasheet for 480 products: View 59065-1-S-05-C 59065-2-T-03-A 59065-2-S-01-E	View Datasheet View products	Proximity Sensors
Datasheet for 7 products: View VVZB120-12io2 VVZB120-16io2T VVZB120-16io2	View Datasheet View products	Various
Datasheet for 2 products: View MKI100-12E8 MWI100-12E8	View Datasheet View products	IGBT Modules
Datasheet for 75 products: View BZY93C8V2 BZY93C43R BZY93C7V5	View Datasheet View products	Zener
Datasheet for 1 product: View VWI35-06P1	View Datasheet View products	IGBT Modules
Datasheet for 1 product: View MG12150D-BA1MM	View Datasheet View products	IGBT Modules
Datasheet for 5 products: View 59025-040 59025-010 59025-030	View Datasheet View products	Proximity Sensors
Datasheet for 24 products: View 59065-30 59145-30 59070-30	View Datasheet View products	Proximity Sensors
Datasheet for 19 products: View 59010-1-S-01-A 59010-1-S-05-A 59010-1-S-04-F	View Datasheet View products	Proximity Sensors
Datasheet for 11 products: View 59105-1-V-00-0 59105-4-U-00-0 59105-4-T-00-0	View Datasheet View products	Proximity Sensors

Littelfuse Reference Designs View All

Z8 MCU Development System for 3-Phase AC Motor

Littelfuse

Using part Z8FMC16100

Interactive

SESD1004Q4UG-0020-090, Display Port Typical Application using SESD1004Q4UG-0020-090 ESD Suppressor Diode Arrays 20kV Automotive 10-Pin DFN

Littelfuse

Using part SESD1004Q4UG-0020-090

Interactive

SESD0402X1UN-0020-090, Typical Application using SESD0402X1UN-0020-090 ESD Suppressor Diode Arrays 20kV 2-Pin DFN

Littelfuse

Using part SESD0402X1UN-0020-090

Interactive

SESD0201X1UN-0020-090, Typical Application using SESD0201X1UN-0020-090 ESD Suppressor Diode Arrays 20kV 2-Pin DFN

Littelfuse

Using part SESD0201X1UN-0020-090

Interactive

Typical Linear Dimming Application Circuit for MXHV9910BTR Off-Line, High Brightness LED Driver

Littelfuse

Using part MXHV9910BTR

Littelfuse Articles and Videos

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Connectivity and ADAS drive innovation and development in automotive applications

Discover how connectivity and ADAS are revolutionizing the automotive industry, enhancing safety and convenience for a new era of mobility with Littelfuse solutions.

Littelfuse ISXA40 and IXSA80 Industrial-Grade SiC MOSFETs

In this article from Littelfuse, learn all about the new IXSA40 and IXSA80 industrial-grade, single-switch SiC MOSFETs.

Residential Solar Solutions

Innovative residential solar solutions are powered by Littelfuse technology.

New Littelfuse solid-state relays with enhanced reliability and longer lifespan

Littelfuse unveils new solid-state relays, offering durability, easy installation, and versatile protection for a range of industries.

TTape™ platform: an advanced overtemperature detection solution for EV and energy storage system Li-ion battery packs

TTape™ by Littelfuse offers innovative overtemperature detection for Li-ion batteries, improving safety and extending battery life in automotive and energy storage applications.

Littelfuse enhances protection and control for lithium batteries

Littelfuse offers solutions for safety and aging concerns in lithium battery applications.

Littelfuse

DC contactor relays: Selecting high-voltage DC components

This article explores DC contactor relays in EV applications, including background, design, protective abilities and more.

Navigating the digital healthcare revolution: innovations for better patient outcomes

Find out about Littelfuse’s solutions for connected drug delivery systems.

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Circuit Protection

Computers and Peripherals

Connectors

Electromechanical

Encoders

Kits and Tools

LED Lighting, Optoelectronics and Displays

Passives

Power

Semiconductors

Sensors

Test and Measurement

Thermal Management

Tools and Supplies

Wire and Cables

IP&E Components

Overstock

Electromechanical

Sensors

Embedded Systems

Embedded Systems

Manufacturers Our Featured Partners

Circuit Protection

Computers and Peripherals

Connectors

Electromechanical

Encoders

Kits and Tools

LED Lighting, Optoelectronics and Displays

Passives

Power

Semiconductors

Sensors

Test and Measurement

Thermal Management

Tools and Supplies

Wire and Cables

IP&E Components

Overstock

Electromechanical

Sensors

Embedded Systems

Embedded Systems

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Littelfuse

About Littelfuse

Littelfuse Product Categories View all Products

Product categories

Circuit Protection

Electromechanical Switches

Diodes, Transistors and Thyristors

Relays

Sensors

Connectors

Resistors

LEDs and LED Lighting

Power Management

Optoelectronics

Wire and Cable

Magnetics

Kits and Tools

EMI/RFI Suppression

Other

Fasteners and Hardware

Motion Control and Fluid Power

Drivers and Interfaces

Computer Products

Tools

Communication

Audio Components

Power Supplies

Batteries and Accessories

Electronic Switches