Welcome to Littelfuse iDesign

Littelfuse created the iDesign platform in response to customer requests for a fast, simple way to identify the most appropriate solutions for their circuit protection applications. Thousands of engineers around the world have already registered for a free iDesign account. For your own account, just click the “New Users Register Here” button and complete a brief form. If you already have an iDesign account, welcome back; we hope you find the latest additions to the platform helpful.

iDesign Online Tools

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  • The iDesign platform offers you the assistance you need to choose the best component for an application, find parts documentation, share information with colleagues, and order part samples for prototyping.
  • To view videos on using the Littelfuse iDesign tool, click here.
  • For further assistance with the iDesign tools, contact us at idesign@littelfuse.com.