Littelfuse products are vital components in applications that use electrical energy, from consumer electronics to vehicles and industrial facilities. They offer the industry’s broadest and deepest portfolio of circuit protection products, with growing platforms in power control and sensing. They are expanding into adjacent markets as part of their corporate strategy of accelerated organic growth and strategic acquisitions. These markets include power semiconductors, heavy-duty switches, magnetic, optical, electromechanical, and temperature sensors; and products that provide safe control and distribution of electrical power.

RF Development ToolsVehicle Maintenance and Customization ProductsStoragePosition, Proximity, Speed (Modules) - IndustrialSurge Protection DevicesSafety RelaysContactors (Electromechanical)Cable Pull SwitchesReed RelaysAutomotive RelaysTime Delay RelaysMiscellaneous Networking SolutionsBoard Mount DC DC ConvertersIsolators - Gate DriversSpecial Purpose IsolatorsTransistor, Photovoltaic Output OptoisolatorsLogic Output OptoisolatorsRF Transceiver ICsRF Transceiver Modules and ModemsRF Wireless MiscNFC/RFID Tags & TranspondersCommon Mode ChokesEMI/RFI Filters (LC, RC Networks)Power Distribution, Surge ProtectorsControllers - AccessoriesMonitor - Relay OutputProtection Relays & SystemsMonitor - Current/Voltage TransducerLiquid & Level ControllersSpecialized Automation and Control productsControllers - Process, TemperatureIndustrial Automation and Control AccessoriesProgrammers, Emulators, and DebuggersSockets & AdaptersSensors Evaluation BoardsEvaluation Boards - LED DriversPMIC Development ToolsEvaluation and Demonstration Boards and KitsEmbedded, MCU, DSP Evaluation BoardsSoftware, ServicesDevelopment Boards AccessoriesAnalog Switches - Special Purpose ICsSpecial Purpose Amplifiers ICsApplication Specific MCUSpecialized Power ManagementOR Controllers, Ideal DiodesSpecialized Interface ICsInterface ControllersLighting, Ballast ControllersSpecial Purpose RegulatorsLED Drivers(ICs)Audio Special Purpose ICsDC Switching Voltage RegulatorsThermal Management ICsCurrent & Power Monitors & RegulatorsTranslators, Level ShiftersCounters, Dividers ICsGate Drivers ICsClock Generators & Support ProductsPower Distribution Switches, Load DriversModems - ICs and ModulesMicrocontrollers, Microprocessor, FPGA ModulesDC DC Switching ControllersDrivers, Receivers, TransceiversEncoders, Decoders, ConvertersTelecomLinear Voltage RegulatorsDSPMicroprocessorsSupervisorsProgrammable Timers and OscillatorsOP Amps, Buffer Amps ICsSpecialized ICsMicrocontrollersSignal Terminators ICsCircuit Protection Kits - TVS DiodesCircuit Protection Kits - FuseCircuit Protection - Assortment KitsCable Assembly KitsSensor KitsMiscellaneous KitsConnector KitsTransformer KitsSpecialty EquipmentRack AccessoriesRacksBoxesStandoffs & SpacersDIN Rail ChannelMiscellaneousNutsWashersOther AccessoriesKnobsSensor Matched MagnetsSolid-State SwitchesBoard Mount Hall Effect / Magnetic SensorsPosition, Proximity, Speed (Modules)PTC ThermistorsAngle, Linear Position MeasuringIrDA Transceiver ModulesResistance Temperature DetectorOptical Motion SensorsShock SensorsCurrent SensorsLiquid Level SensorsFlow SensorsAnalog and Digital OutputSolar CellsThermocouples, Temperature ProbesMulti Purpose MagnetsSensor, Transducer AccessoriesNTC ThermistorsCable Supports and FastenersMulti-Conductor CablesSpecialized Cable AssembliesRectangular Cable AssembliesCircular Cable AssembliesCoaxial Connector (RF) AssembliesCircular Connector AssembliesBlade Type Power Connector ContactsPower DistributionRing ConnectorsQuick Connects, Quick Disconnect ConnectorsSpade ConnectorsCircular Connector AdaptersBarrier BlocksSpecialized ConnectorsAC Power Entry ModulesCircular Connector ContactsCircular Connector AccessoriesCircular Connector HousingsFree Hanging & Panel MountTerminal Block ProductsTerminal Strips and Turret BoardsWire Splice ConnectorsTRIACsBridge RectifiersSCRs ModulesIGBT ModulesPower Driver ModulesSpecial PurposeIGBT ArraysFET, MOSFET ArraysSingle Zener DiodesDiode ArraysRF FETs, MOSFETsSCRsSingle DiodesSingle IGBTsSingle FETs, MOSFETsDIACs, SIDACsWrenchesAdhesives, Epoxies, Greases, PastesBoots & Seals AccessoriesAccessories - CapsSelector SwitchesToggle SwitchesRotary SwitchesPushbutton SwitchesLimit SwitchesKeylock SwitchesRocker SwitchesMagnetic, Reed SwitchesSwitch AccessoriesSignal RelaysPower RelaysRelay SocketsSolid State RelaysRelay AccessoriesMotor, Actuator, Solenoid and Driver AccessoriesPulse TransformersPower TransformersCurrent Sense TransformersAlarms, Buzzers, and SirensSpecialty FusesLighting ProtectionDisconnect Switch ComponentsSurge SuppressorsInrush Current LimitersPTC Resettable FusesMixed TechnologyGround Fault Circuit InterrupterCircuit Protection ThyristorsThermal Cutoffs (Thermal Fuses)Circuit Protection AccessoriesTVS DiodesCircuit BreakersGas Discharge Tube ArrestersVaristors, MOVsFuseholdersFusesPanel IndicatorsOptoelectronics AccessoriesBattery Product AccessoriesBattery ChargersRheostatsScale DialsPotentiometer AccessoriesFixed InductorsAluminum Electrolytic CapacitorsCapacitor Networks, ArraysSpecialized ResistorsChip Resistor(SMD)Unclassified
OUR PRODUCTS