Protect Critical Water/Wastewater Operations

Learn how to upgrade and protect these critical infrastructures

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90 Years of Innovation and Engineering Expertise

Learn about our history of innovation and view a timeline of Littelfuse milestones.

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Protect Critical Power Electronics

New Extreme Current Limiting POWR-SPEED line of High-Speed Fuses

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MDB Series Features and Benefits  Our MDB series allows you to safely distribute power to multiple fuses and  wires, even those with radically different amps. Click here to read more,  download the infosheet, and watch our overview video.  Read More and Watch the Video  <http://info.littelfuse.com/mdb-series-features-and-benefits-video>

State of the SiC MOSFET

Device evolution, technology merit, and commercial prospects

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PLEDxN Series Open LED Protectors

Ensures rest of string or array keeps operating if a single LED fails

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PolySwitch AEC-Q200 Qualified SMD PPTCs

Designed for robust overcurrent protection in harsh automotive environments.

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Video: Heavy Duty Battery Switches

500 amp, sealed, IP-rated, dual-pole battery switch disconnects all vehicle electrical power in applications with two circuits, or both positive and negative isolation.

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Don’t miss these Littelfuse events!

Find out where and when the most important events in the industry will take place.

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New Semiconductor Product
Information Available

Acquired semiconductor product lines are now fully integrated with Littelfuse.com: Thyristors, TVS Diodes, Ignition IGBTs.

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Keep Your Distance and Stay Safe!

The new MP8000 Bluetooth® Enabled Overload Relay can be monitored from your smart phone

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