Welcome to Littelfuse. We develop and manufacture industry leading overcurrent, overvoltage circuit protection devices as well as power switching products including thyristors and GDTs. For over 75 years, Littelfuse has focused on providing circuit protection solutions for our customers all over the world. Our global distribution network, range of products, and testing services are second to none.
Our fuses and other circuit protection products are available directly from Littelfuse, through distribution partners, mass merchandisers, and auto parts retailers. Littelfuse fuses serve both original equipment manufacturers (OEMs) and maintenance and repair (MRO) markets.
Littelfuse is the world leader in the design and manufacturing of fuses for the Automotive, Industrial, Handheld, Computer and Telecom markets. Whether you are looking for surface mount or axial; glass or ceramic; thin-film or Nano2® style; fasting-acting or Slo-Blo® fuses; Littelfuse has the part to meet your need. Operating characteristics include current ranges from .010A - 35A, maximum voltage ranges from 24V - 600V, and interrupting ratings from 35A - 200,000A. Look to Littelfuse as your lead-free fuse source. Our new line of lead-free thin-film fuses, are perfect for your environmentally friendly design. Contact Littelfuse for future availability of other lead-free fuse products.
Littelfuse offers a full range of surface mount and radial leaded PTC resettable devices. Designed for "plug and play" applications, the 1206L and 1812L series surface mount PTCs provide protection for electronic circuits from overcurrent conditions in a wide range of "plug and play" applications. Littelfuse surface mount PTCs comply with electronic industry standards for lead reduction. The 30R and 60R series radial PTCs are rated at 30VDC and 60VDC respectively, and are designed for use in higher voltage applications that require minimal maintenance and are subject to repetitive overcurrent conditions. Applications include industrial controls and home security systems. All Littelfuse PTC device series are recognized under the Components Program of Underwriters Laboratory, the Component Acceptance Program of CSA, and TUV.
Littelfuse POWR-GARD™ brand power fuse products are designed to protect circuits in industrial and commercial heating and cooling systems, lighting circuits and electrical distribution networks, as well as in a wide variety of industrial equipment. Products include our award winning line of Indicator™ fuses that allow customers to quickly identify blown fuses to reduce downtime and improve profitability. Fuse classes available include UL Class L, RK1, RK5, T, J, CC, CD, G, K5, H, Plug, Supplementary and Telecommunications. Fuses are also available to meet various European Electrical Standards. Contact Littelfuse POWR-GARD™ product Technical Support
Fuses protect electrical and electronic circuitry from overheating when exposed to short circuits and other overcurrent conditions. The heart of a typical fuse is a length of wire, which is heated to its melting point by the excessive current. The circuit current flow decreases to zero as the wire melts open. Littelfuse has fuses for a large variety of applications, including telecommunications, automotive, industrial, high reliability military, consumer electronics, and many others. Our circuit protection products meet or exceed all government and industry standards, so you benefit from our compromising approach to quality and reliability.
Our application search tool makes it easy to find the right fuses for your specific application requirements. Littelfuse also offers a comprehensive knowledgebase to help designers understand and implement Littelfuse fuses and resettable PTCs. In our knowledgebase, you'll find product literature, technical articles, software downloads, part number cross reference, and much more.
As a specialist in circuit protection solutions, Littelfuse features a comprehensive selection of fuses:
These are just a few of the circuit protection solutions we offer. Please use our product search to find the right solution for your project, or follow this link: Littelfuse Circuit Protection Solutions: Fuses.
Additional Information:
Fuse Holders
Electrical Fuses
Resettable Fuses
TVSS
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