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Electronics => Repair => Topic started by: hercegovac on June 08, 2019, 03:18:53 am

Title: need help identifying component labeled 4901 rh45 on AMD RX Vega 56
Post by: hercegovac on June 08, 2019, 03:18:53 am

need help identifying component labeled 4901 rh45 on AMD RX Vega 56

Title: Re: need help identifying component labeled 4901 rh45 on AMD RX Vega 56
Post by: LateLesley on June 08, 2019, 11:26:12 am

Going by the Q-labeling and closeness to an inductor, i'm gonna guess that it may be a MOSFET, possibly this one - https://www.onsemi.com/pub/Collateral/NTMFD4901NF-D.PDF (https://www.onsemi.com/pub/Collateral/NTMFD4901NF-D.PDF)

Title: Re: need help identifying component labeled 4901 rh45 on AMD RX Vega 56
Post by: hercegovac on June 08, 2019, 01:54:20 pm

I hoped that was the right part until after I removed it from the PCB, the pinout on the bottom does not matches the spec sheet drawing

Title: Re: need help identifying component labeled 4901 rh45 on AMD RX Vega 56
Post by: hercegovac on June 08, 2019, 02:00:27 pm

Also it is much smaller that typical mosfet used on GPUs

Title: Re: need help identifying component labeled 4901 rh45 on AMD RX Vega 56
Post by: LateLesley on June 08, 2019, 03:31:36 pm

It's just a slightly different footprint of the same type I think. (But I haven't looked over all the specs. )

https://uk.farnell.com/on-semiconductor/ntlld4901nftwg/mosfet-n-ch-30v-9-5a-8wdfn/dp/2216673


(EDIT : the current capacity is smaller)