Arduino uno

Other Hardware General Electronics
1

Hello all, I have been trying to find out for the last few days what the gold chip next to the usb type B called and what does it do?

Thanks

2

Is it the resettable polyfuse MF-MSMF050 you mean?

Warnings

The Arduino Uno has a resettable polyfuse that protects your computer's USB ports from shorts and overcurrent. Although most computers provide their own internal protection, the fuse provides an extra layer of protection. If more than 500 mA is applied to the USB port, the fuse will automatically break the connection until the short or overload is removed.

From Arduino Uno Rev3

3

It could be, not to sure looks like it what you posted. But, looking at the schematic i seen this number blm21pg221sn1d. This one says it’s a ferrite filter bead

4

pezzad:
It could be, not to sure looks like it what you posted. But, looking at the schematic i seen this number blm21pg221sn1d. This one says it’s a ferrite filter bead

I would doubt that it is that component since the "sn" in its name seems to refer to tin plating and not gold.
Post a photo with a circle around the part in question.