Information
Overview
- Summary
- Littelfuse is a diversified industrial technology manufacturing company dedicated to enabling a sustainable, connected, and safer world. The company offers a comprehensive portfolio of circuit protection, power control, and sensing solutions, including fuses, semiconductors, sensors, relays, switches, inductors, resistors, and transformers. With approximately 16,000 global associates across more than 20 countries, it partners with customers to design and deliver innovative and reliable solutions to over 100,000 end customers. Littelfuse is a global leader, with its products found daily across various industrial, transportation, and electronics end markets.Littelfuse is a diversified industrial technology manufacturing company dedicated to enabling a sustainable, connected, and safer world. The company offers a comprehensive portfolio of circuit protection, power control, and sensing solutions, including fuses, semiconductors, sensors, relays, switches, inductors, resistors, and transformers. With approximately 16,000 global associates across more than 20 countries, it partners with customers to design and deliver innovative and reliable solutions to over 100,000 end customers. Littelfuse is a global leader, with its products found daily across various industrial, transportation, and electronics end markets.
- Key Products/Technologies
- Circuit Protection Solutions: A broad range of products including fuses, resettable fuses, ESD suppressors, varistors, gas discharge tubes, TVS diodes and diode arrays, and SIDACtor® devices for diverse industrial and electronic applications. The company offers the industry's most extensive selection of automotive fuses, such as blade fuses, cartridge fuses, and high-voltage fuses. Its NANO2® SMD 415 Series Fuse incorporates innovative SMD fuse technology for high-voltage protection and automated assembly.Circuit Protection Solutions: A broad range of products including fuses, resettable fuses, ESD suppressors, varistors, gas discharge tubes, TVS diodes and diode arrays, and SIDACtor® devices for diverse industrial and electronic applications. The company offers the industry's most extensive selection of automotive fuses, such as blade fuses, cartridge fuses, and high-voltage fuses. Its NANO2® SMD 415 Series Fuse incorporates innovative SMD fuse technology for high-voltage protection and automated assembly.
- Power Semiconductors and Control Devices: Engineering power semiconductors like IGBTs and MOSFETs, semiconductor fuses, GFCI solutions, DC disconnect switches, motor and pump controllers, protection relays, control panels, and temperature sensors. These IGBTs and MOSFETs serve as rectifiers and inverters, providing reliable power conversion solutions.Power Semiconductors and Control Devices: Engineering power semiconductors like IGBTs and MOSFETs, semiconductor fuses, GFCI solutions, DC disconnect switches, motor and pump controllers, protection relays, control panels, and temperature sensors. These IGBTs and MOSFETs serve as rectifiers and inverters, providing reliable power conversion solutions.
- Sensors and Switches: Providing precise, low-power sensing solutions including automotive sensors, industrial switches and sensors, magnetic reed switches, Hall effect sensors, tactile switches, and thumbstick switches. The AEC-Q qualified current sensor family for EV battery, motor, and safety systems offers accurate, isolated current measurement up to ±1500A.Sensors and Switches: Providing precise, low-power sensing solutions including automotive sensors, industrial switches and sensors, magnetic reed switches, Hall effect sensors, tactile switches, and thumbstick switches. The AEC-Q qualified current sensor family for EV battery, motor, and safety systems offers accurate, isolated current measurement up to ±1500A.
- Relays and Electrical Controls: Offering essential products for industrial automation and electrical control, such as protection relays, timers and counters, contactors, and solid-state relays. Control panel solutions include industrial GFCIs, arc flash relays, space-saving fuse blocks, indicating fuse holders, temperature controls, and overload relays.Relays and Electrical Controls: Offering essential products for industrial automation and electrical control, such as protection relays, timers and counters, contactors, and solid-state relays. Control panel solutions include industrial GFCIs, arc flash relays, space-saving fuse blocks, indicating fuse holders, temperature controls, and overload relays.
- Battery Management and Power Distribution: Delivering solutions for electric and hybrid vehicles, including battery management systems, DC motors, advanced driver assistance systems (ADAS) components, battery protectors, and power distribution modules. High-performance automotive fuses, TVS diodes, and thermal protectors prevent damage to batteries, wiring harnesses, DC motors, and traction inverters in high-voltage EV systems.Battery Management and Power Distribution: Delivering solutions for electric and hybrid vehicles, including battery management systems, DC motors, advanced driver assistance systems (ADAS) components, battery protectors, and power distribution modules. High-performance automotive fuses, TVS diodes, and thermal protectors prevent damage to batteries, wiring harnesses, DC motors, and traction inverters in high-voltage EV systems.
- Core Advantages
- Extensive Product Portfolio and Integrated Solutions Capability: Possessing one of the industry's broadest product offerings in circuit protection, power control, and sensing technologies. This breadth is a significant competitive edge, enabling customers to solve multiple protection and control problems across the same platform, especially in complex electrical systems.Extensive Product Portfolio and Integrated Solutions Capability: Possessing one of the industry's broadest product offerings in circuit protection, power control, and sensing technologies. This breadth is a significant competitive edge, enabling customers to solve multiple protection and control problems across the same platform, especially in complex electrical systems.
- Innovative Technology and R&D Investment: A history of continuous innovation since inventing the first small, fast-melting fuse in 1927. Ongoing R&D investments, particularly in high-voltage fuses for electric vehicles (EVs) and Silicon Carbide (SiC) technology, ensure a technological lead.Innovative Technology and R&D Investment: A history of continuous innovation since inventing the first small, fast-melting fuse in 1927. Ongoing R&D investments, particularly in high-voltage fuses for electric vehicles (EVs) and Silicon Carbide (SiC) technology, ensure a technological lead.
- Global Manufacturing and Distribution Network: An extensive global footprint with over 40 sales, distribution, manufacturing, and engineering facilities worldwide. This strategic network across the Americas, Europe, and Asia-Pacific effectively serves a diverse international customer base.Global Manufacturing and Distribution Network: An extensive global footprint with over 40 sales, distribution, manufacturing, and engineering facilities worldwide. This strategic network across the Americas, Europe, and Asia-Pacific effectively serves a diverse international customer base.
- Diversified End-Market Exposure and Customer Loyalty: Supplying products to a wide array of end markets including automotive, industrial, and electronics, providing resilience against market fluctuations. The critical nature of its products and long equipment life cycles foster long-term customer relationships and recurring demand for maintenance and replacement.Diversified End-Market Exposure and Customer Loyalty: Supplying products to a wide array of end markets including automotive, industrial, and electronics, providing resilience against market fluctuations. The critical nature of its products and long equipment life cycles foster long-term customer relationships and recurring demand for maintenance and replacement.
- High Reliability and Application Expertise: Designing and manufacturing circuit protection, power semiconductors, and electromechanical switches focused on safety-critical and high-reliability applications. Unparalleled product reliability, deep multi-industry application expertise, and a global collaborative innovation ecosystem are key strategic advantages.High Reliability and Application Expertise: Designing and manufacturing circuit protection, power semiconductors, and electromechanical switches focused on safety-critical and high-reliability applications. Unparalleled product reliability, deep multi-industry application expertise, and a global collaborative innovation ecosystem are key strategic advantages.
- Target Industries
- Automotive Industry: Internal Combustion Engine (ICE) and Electric Vehicles (EVs), Hybrid Electric Vehicles (HEVs), Advanced Driver Assistance Systems (ADAS), infotainment and navigation, vehicle communications (V2V, V2I), lighting and headlamps, cameras, remote keyless entry systems, battery management systems, DC motor control.Automotive Industry: Internal Combustion Engine (ICE) and Electric Vehicles (EVs), Hybrid Electric Vehicles (HEVs), Advanced Driver Assistance Systems (ADAS), infotainment and navigation, vehicle communications (V2V, V2I), lighting and headlamps, cameras, remote keyless entry systems, battery management systems, DC motor control.
- Industrial Automation and Manufacturing: Industrial safety, factory automation, robotics, food processing, HVAC/R, construction, mining, oil and gas, power generation, pulp and paper, solar, wind, and energy storage systems, motor drives, power conversion, control panels, switchgear.Industrial Automation and Manufacturing: Industrial safety, factory automation, robotics, food processing, HVAC/R, construction, mining, oil and gas, power generation, pulp and paper, solar, wind, and energy storage systems, motor drives, power conversion, control panels, switchgear.
- Electronics Industry: Data centers, telecommunications, medical devices, consumer electronics, appliances, mobile wearables (smartwatches, VR/AR systems, wireless headsets), POS systems, gaming controllers, USB charging ports, laptops.Electronics Industry: Data centers, telecommunications, medical devices, consumer electronics, appliances, mobile wearables (smartwatches, VR/AR systems, wireless headsets), POS systems, gaming controllers, USB charging ports, laptops.
- Commercial Vehicles and Agriculture: Commercial vehicles, agricultural equipment (tractors, combine harvesters), material-handling equipment, recreational vehicles (ATVs, golf carts, RVs).Commercial Vehicles and Agriculture: Commercial vehicles, agricultural equipment (tractors, combine harvesters), material-handling equipment, recreational vehicles (ATVs, golf carts, RVs).
- Aerospace and Defense: Electronics protection and electrical wiring interconnect systems for mission-critical aerospace applications.Aerospace and Defense: Electronics protection and electrical wiring interconnect systems for mission-critical aerospace applications.
- Major Markets
- China, Taiwan, South Korea, Japan, Philippines, IndiaChina, Taiwan, South Korea, Japan, Philippines, India
- Germany, United Kingdom, Switzerland, France, Italy, SwedenGermany, United Kingdom, Switzerland, France, Italy, Sweden
- United States, Canada, MexicoUnited States, Canada, Mexico
- BrazilBrazil
- Certifications/Patents
- Quality Management System Certifications: The first U.S. fuse manufacturer to achieve ISO 9001 certification. Holding ISO 9002 and automotive industry quality management system standard ISO/TS 16949 certifications. Its Philippines manufacturing facility holds ISO 9001:2015 certification.Quality Management System Certifications: The first U.S. fuse manufacturer to achieve ISO 9001 certification. Holding ISO 9002 and automotive industry quality management system standard ISO/TS 16949 certifications. Its Philippines manufacturing facility holds ISO 9001:2015 certification.
- Automotive Industry Standards Compliance: Possessing AEC-Q101 and AEC-Q200 qualified TVS diodes, diode arrays, varistors, multilayer varistors, and POLY-FUSE® PTCs for automotive applications.Automotive Industry Standards Compliance: Possessing AEC-Q101 and AEC-Q200 qualified TVS diodes, diode arrays, varistors, multilayer varistors, and POLY-FUSE® PTCs for automotive applications.
- Technological Patents: Patents include a low resistance, high voltage, and resistance stable PPTC material and manufacturing method (U.S. Patent No. 12531172). A solderless and pressure contact connection technology (U.S. Patent No. 12500151). Methods of preparing metal sheets for a DCB/DAB substrate bonding process (U.S. Patent No. 12545011). An unsealed single fuse holder (U.S. Patent No. 12500057).Technological Patents: Patents include a low resistance, high voltage, and resistance stable PPTC material and manufacturing method (U.S. Patent No. 12531172). A solderless and pressure contact connection technology (U.S. Patent No. 12500151). Methods of preparing metal sheets for a DCB/DAB substrate bonding process (U.S. Patent No. 12545011). An unsealed single fuse holder (U.S. Patent No. 12500057).
- Awards and Recognition: The NANO2® SMD 415 Series Fuse received the 2025 Product of the Year Award in the Passives category from EDN and Electronic Products. Recognized multiple times as Product of the Year by Consulting-Specifying Engineer from 2010 to 2013. Received the Supplier Excellence award from Arrow Electronics in 2011.Awards and Recognition: The NANO2® SMD 415 Series Fuse received the 2025 Product of the Year Award in the Passives category from EDN and Electronic Products. Recognized multiple times as Product of the Year by Consulting-Specifying Engineer from 2010 to 2013. Received the Supplier Excellence award from Arrow Electronics in 2011.
Introduction
Location
6133 N River Rd #500, Rosemont, IL 60018, USA
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