Littelfuse

Littelfuse is delicated to manufacturing products that are crucial components in applications that use electrical energy. These applications include consumer electronics, vehicles and industrial facilities. We provide the most extensive portfolio of circuit protection products in the industries. In the meantime, we provide the growing platforms in power control and sensing. They are expanding into adjoining markets contain power semiconductors, heavy-duty switches, magnetic, optical, electromechanical, and temperature sensors. We focus on products that provide safe control and distribution of electrical power.

Circuit Protection
TVS - Mixed Technology Fuses Inrush Current Limiters (ICL)Circuit Breakers Lighting Protection Electrical, Specialty Fuses TVS - Varistors, MOVs Gas Discharge Tube Arresters (GDT)Accessories TVS - Surge Protection Devices (SPDs)Thermal Cutoffs (Thermal Fuses)TVS - Thyristors Ground Fault Circuit Interrupter (GFCI)TVS - Diodes PTC Resettable Fuses Fuseholders
Discrete Semiconductor Products
Thyristors - TRIACs Thyristors - DIACs, SIDACs Transistors - Special Purpose Transistors - FETs, MOSFETs - Arrays Thyristors - SCRs Diodes - RF Transistors - IGBTs - Arrays Diodes - Bridge Rectifiers Diodes - Zener - Single Power Driver Modules Transistors - Bipolar (BJT) - Single Transistors - IGBTs - Modules Diodes - Rectifiers - Arrays Transistors - IGBTs - Single Diodes - Rectifiers - Single Thyristors - SCRs - Modules Transistors - FETs, MOSFETs - Single
Industrial Automation and Controls
Controllers - Liquid, Level Panel Meters Pneumatics, Hydraulics Controllers - Process, Temperature Time Delay Relays Protection Relays & Systems Controllers - Accessories Monitor - Current/Voltage Transducer Monitor - Relay Output Controllers - PLC Modules Panel Meters - Counters, Hour Meters Accessories Machine Vision - Lens Specialized
Sensors, Transducers
Accessories Proximity Sensors Temperature Sensors - Thermostats - Mechanical Float, Level Sensors Motion Sensors - Vibration Optical Sensors - Photoelectric, Industrial Magnetic Sensors - Switches (Solid State)Temperature Sensors - PTC Thermistors Temperature Sensors - Analog and Digital Output Position Sensors - Angle, Linear Position Measuring Magnets - Multi Purpose Temperature Sensors - RTD (Resistance Temperature Detector)Magnetic Sensors - Linear, Compass (ICs)Current Sensors Magnetic Sensors - Position, Proximity, Speed (Modules)Temperature Sensors - NTC Thermistors Sensor Interface - Junction Blocks Flow Sensors Temperature Sensors - Thermocouple, Temperature Probes Motion Sensors - Tilt Switches Shock Sensors Magnets - Sensor Matched Pressure Sensors, Transducers
Cables, Wires - Management
Protective Hoses, Solid Tubing, Sleeving Bushings, Grommets Cable and Cord Grips Pulling, Support Grips Labels, Labeling Grounding Braid, Straps Markers Cable Ties and Cable Lacing Heat Shrink Tubing Solder Sleeve Accessories Heat Shrink Boots, Caps Cable Supports and Fasteners
Switches
Rotary Switches Accessories - Boots, Seals Configurable Switch Components - Body Toggle Switches Pushbutton Switches Snap Action, Limit Switches Keylock Switches Selector Switches Navigation Switches, Joystick Accessories - Caps Programmable Display Switches DIP Switches Rocker Switches Magnetic, Reed Switches Cable Pull Switches Slide Switches Accessories Disconnect Switch Components
Connectors, Interconnects
Coaxial Connectors (RF) - Adapters Banana and Tip Connectors - Jacks, Plugs Circular Connectors - Adapters Barrel - Audio Connectors Terminal Strips and Turret Boards Terminal Blocks - Interface Modules Pluggable Connectors - Accessories Modular Connectors - Wiring Blocks Circular Connectors - Housings Rectangular Connectors - Contacts Modular Connectors - Jacks With Magnetics Terminal Blocks - Specialized Coaxial Connectors (RF)Rectangular Connectors - Accessories Terminals - Ring Connectors Terminals - Wire Pin Connectors Rectangular Connectors - Free Hanging, Panel Mount Circular Connectors Barrel - Accessories Terminal Blocks - Wire to Board Terminal Blocks - Din Rail, Channel Coaxial Connectors (RF) - Contacts Terminal Blocks - Accessories - Jumpers Terminals - PC Pin, Single Post Connectors Circular Connectors - Backshells and Cable Clamps Terminals - Spade Connectors D-Sub, D-Shaped Connectors - Accessories - Jackscrews Terminal Blocks - Adapters Circular Connectors - Contacts Terminals - Quick Connects, Quick Disconnect Connectors Fiber Optic Connectors Contacts - Multi Purpose Power Entry Connectors - Accessories Terminals - Specialized Connectors Terminal Blocks - Barrier Blocks Banana and Tip Connectors - Binding Posts Rectangular Connectors - Adapters Terminals - Screw Connectors D-Sub Connectors D-Sub, D-Shaped Connectors - Adapters Rectangular Connectors - Headers, Male Pins Circular Connectors - Accessories Terminal Blocks - Headers, Plugs and Sockets Terminal Blocks - Accessories Coaxial Connectors (RF) - Terminators Terminal Blocks - Power Distribution Terminals - Adapters Terminal Blocks - Accessories - Wire Ferrules Between Series Adapters Terminals - Rectangular Connectors Solid State Lighting Connectors Contacts, Spring Loaded and Pressure Terminals - Wire Splice Connectors Blade Type Power Connectors - Contacts
Relays
Automotive Relays Power Relays, Over 2 Amps Safety Relays I/O Relay Module Racks Contactors (Electromechanical)Reed Relays Signal Relays, Up to 2 Amps Accessories Relay Sockets Solid State Relays
Hardware, Fasteners, Accessories
Accessories Knobs Washers Nuts Component Insulators, Mounts, Spacers Screws, Bolts Miscellaneous Bumpers, Feet, Pads, Grips Bearings Hole Plugs DIN Rail Channel Structural, Motion Hardware Board Spacers, Standoffs Rivets
Resistors
Accessories Resistor Networks, Arrays Specialized Resistors Chassis Mount Resistors Chip Resistor - Surface Mount
Integrated Circuits (ICs)
PMIC - Hot Swap Controllers PMIC - Voltage Regulators - DC DC Switching Regulators Embedded - Microcontroller, Microprocessor, FPGA Modules PMIC - Lighting, Ballast Controllers Interface - Analog Switches - Special Purpose Interface - Telecom Interface - Sensor and Detector Interfaces PMIC - Voltage Reference Embedded - FPGAs (Field Programmable Gate Array)PMIC - Voltage Regulators - Linear PMIC - Supervisors Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps PMIC - Power Distribution Switches, Load Drivers PMIC - Gate Drivers PMIC - Voltage Regulators - DC DC Switching Controllers PMIC - Power Supply Controllers, Monitors PMIC - LED Drivers Interface - Specialized Embedded - Microcontrollers - Application Specific Clock/Timing - Programmable Timers and Oscillators Specialized ICs Interface - Drivers, Receivers, Transceivers Memory PMIC - Battery Management
Kits
Connector Kits Heat Shrink Tubing Kits Circuit Protection Kits - Fuse Circuit Protection Kits - TVS Diodes Miscellaneous Circuit Protection - Assortment Kits Sensor Kits Cable Assemblies Inductor Kits
Optoelectronics
Addressable, Specialty Panel Indicators, Pilot Lights Lamps - Incandescents, Neons LED Indication - Discrete LEDs - Circuit Board Indicators, Arrays, Light Bars, Bar Graphs LED Lighting - White Optics - Lenses Accessories LED Lighting - COBs, Engines, Modules, Strips
Cables, Wires
Single Conductor Cables (Hook-Up Wire)Multiple Conductor Cables Coaxial Cables (RF)
Audio Products
Alarms, Buzzers, and Sirens Accessories Speakers
Capacitors
Ceramic Capacitors Mica and PTFE Capacitors Trimmers, Variable Capacitors Aluminum Electrolytic Capacitors Electric Double Layer Capacitors (EDLC), Supercapacitors Film Capacitors Capacitor Networks, Arrays
Labels, Signs, Barriers, Identification
Labels, Stickers, Decals - Blank Signs, Nameplates, Posters Labels, Stickers, Decals - Preprinted Accessories Tags Lockouts, Padlocks Barriers, Barricades, Floor Markings, Tapes
Tools
Wire Cutters Crimpers - Crimp Heads, Die Sets Specialized Tools Hammers Accessories Insertion, Extraction Screw and Nut Drivers - Sets Sockets - Sets Pliers Fiber Optics and Accessories Crimpers, Applicators, Presses Screw and Nut Drivers Wrenches Screw and Nut Drivers - Bits, Blades and Handles Chemicals, Cleaners Abrasives and Surface Conditioning Products Sockets, Socket Handles Heat Guns, Torches, Accessories Flashlights Crimpers, Applicators, Presses - Accessories Hex, Torx Keys Personal Protective Equipment (PPE)
Cable Assemblies
USB Cables Circular Cable Assemblies Barrel - Power Cables Fiber Optic Cables Modular Cables Between Series Adapter Cables Rectangular Cable Assemblies Specialized Cable Assemblies
Isolators
Optoisolators - Transistor, Photovoltaic Output Isolators - Gate Drivers Optoisolators - Triac, SCR Output Optoisolators - Logic Output Special Purpose
Motors, Solenoids, Driver Boards/Modules
Motor Driver Boards, Modules Stepper Motors Motors - AC, DC Solenoids, Actuators
Inductors, Coils, Chokes
Arrays, Signal Transformers Fixed Inductors
Battery Products
Accessories Battery Holders, Clips, Contacts
Filters
RF Filters Common Mode Chokes Ferrite Beads and Chips
Transformers
Power Transformers Current Sense Transformers
Boxes, Enclosures, Racks
Card Guides Evaluation, Development Board Enclosures Boxes Box Accessories Box Components Handles Rack Accessories Racks
Soldering, Desoldering, Rework Products
Soldering Irons, Tweezers, Handles Solder Soldering, Desoldering, Rework Tips, Nozzles
Potentiometers, Variable Resistors
Trimmer Potentiometers Accessories Scale Dials Rotary Potentiometers, Rheostats
Tapes, Adhesives, Materials
Tape Dispensers Glue, Adhesives, Applicators Tape
Development Boards, Kits, Programmers
Programming Adapters, Sockets Evaluation Boards - Expansion Boards, Daughter Cards Evaluation Boards - LED Drivers Accessories Evaluation and Demonstration Boards and Kits Software, Services Evaluation Boards - Sensors Evaluation Boards - Embedded - MCU, DSP
RF/IF and RFID
RF Evaluation and Development Kits, Boards RFID Transponders, Tags RF Amplifiers RF Transceiver Modules RF Antennas RFI and EMI - Shielding and Absorbing Materials RF Directional Coupler
Line Protection, Distribution, Backups
DC to AC (Power) Inverters Uninterruptible Power Supply (UPS) Systems Line Conditioners Power Distribution, Surge Protectors
Test and Measurement
Equipment - Specialty Test Clips - Alligator, Crocodile, Heavy Duty Equipment - Multimeters Test Leads - Thermocouples, Temperature Probes Test Points Test Leads - Kits, Assortments Accessories Test Probe Tips
Maker/DIY, Educational
Robotics Kits Wearables Educational Kits
Computer Equipment
Printers, Label Makers Desktop Joysticks, Simulation Products
Crystals, Oscillators, Resonators
Oscillators Crystals
Networking Solutions
Switches, Hubs Miscellaneous
Fans, Thermal Management
Fans - Accessories Thermal - Adhesives, Epoxies, Greases, Pastes Thermal - Liquid Cooling
Static Control, ESD, Clean Room Products
Static Control Shielding Bags, Materials Accessories Monitors, Testers
Power Supplies - Board Mount
Accessories DC DC Converters
Power Supplies - External/Internal (Off-Board)
LED Drivers Accessories AC DC Converters
Prototyping, Fabrication Products
Adapter, Breakout Boards 3D Printing Filaments
Optical Inspection Equipment
Loupes, Magnifiers