Component identification

[sasam]

This little element is marked 54B1G
is it some kind of power switch for usb?
I can't find anything online.


I burned the USB port when I connected 12V to 5V by mistake. I replaced the tantalum capacitor and now the USB is working but my resistances between VBUS and GND on that USB port are doubtful. Something else is probably damaged.

[stj]

Re: Component identification

aat60054b-s5
maybe

[SMDFlea]

Re: Component identification

The part is a Seiko S-1339D15-M5T1U3 ,you can use a silergy SY6288C20AAC as a replacement part .

[diif]

Re: Component identification

This listing suggests it's a G524B1 https://www.ebay.com/itm/10pcs-G524B...-/401903391376

[SMDFlea]

Re: Component identification

You`re right diif ,the part numbers i got were from russian forums .

[sasam]

Re: Component identification

Thanks!

[sasam]

Re: Component identification

There is another component to which I can't find anything online.
It is marked with X1 and is connected in parallel with a tantalum capacitor and a small ceramic one.
Can anyone help me identify this component?

[stj]

Re: Component identification

its a diode probably - the line at one end gives it away.

[sasam]

Re: Component identification

Yes it look like zener diode, or some kind of ESD protection diode but I cannot find specification.

[sasam]

Re: Component identification

Could this be that diode?
https://cdn.badcaps-static.com/pdfs/...e424351f2d.pdf