# What is FR38 in the USB v1.4 schematic?

**URL:** <https://discourse.myriadrf.org/t/what-is-fr38-in-the-usb-v1-4-schematic/6412>\
**Category:** General Discussion\
**Created:** [9 August 2020 22:35 UTC](https://discourse.myriadrf.org/t/what-is-fr38-in-the-usb-v1-4-schematic/6412 "2020-08-09T22:35:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Silas](https://avatars.discourse-cdn.com/v4/letter/s/839c29/32.png) [@Silas](https://discourse.myriadrf.org/u/Silas)\
**Post date:** [9 August 2020 22:35 UTC](https://discourse.myriadrf.org/t/what-is-fr38-in-the-usb-v1-4-schematic/6412/1 "2020-08-09T22:35:00Z")

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Hey. is the FR38 a resistor, a fuse or a coil?  
and were can i get a replacement?

Silas

EDIT: Found all the component info inside the PDF schematic file, as “click on” popup.  
just have to open it in a alternative PDF reader.

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**Author:** ![Silas](https://avatars.discourse-cdn.com/v4/letter/s/839c29/32.png) [@Silas](https://discourse.myriadrf.org/u/Silas)\
**Post date:** [10 August 2020 08:28 UTC](https://discourse.myriadrf.org/t/what-is-fr38-in-the-usb-v1-4-schematic/6412/2 "2020-08-10T08:28:11Z")

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And if I solder over FR38 and R167, and get “all test passed” in LimeQuickTest  
can I then approx. trust that if I replace IC25 and FR38 my boards will be approx. OK again?  
.Silas