replacing NVIDIA 8800 GTX mosfets

[lele.v]

hi all!
i'm trying to repair a videocard NVIDIA 8800 GTX.
i must replace the four mosfet near the power plugs on the upper-right of the board.
These are four "Alpha&Omega 4422 BA652P"; this is the datasheet:

http://www.datasheetdir.com/AO4422+download

I've tried to search this component but i haven't found it... anyone knows a good replace of this component that i can use?

[Duncanbest]

Re: replacing NVIDIA 8800 GTX mosfets

You can use this web to find the mosfet you want:

http://www.vishay.com/mosfets/so-8-package/

filter setting--> Configuration : single Channel:N

then you find the 30V rds on(at 10V) < 15m Ohms Id>11A component,check the pin out fit the original.

Mostly the lower rds ,the price is higher.

If you prefer other's brand like ON ,IR ...etc,do the same way

http://www.onsemi.com/PowerSolutions/parametrics.do

https://ec.irf.com/v6/en/US/adirect/...672+4294852444

http://www.fairchildsemi.com/search/...e&&infoN=10618

[lele.v]

Re: replacing NVIDIA 8800 GTX mosfets

thank you duncanbest, but i already know where to search the mosfet to buy (farnell, because i'm also buying other parts from it).

my problem is that i dont know to search an equivalent mosfet, i'm worried of take no notice of some parameters or other things in the choice of the mosfet, so i prefer to trust of the advices of more experienced people that can search the right mosfet

hope that someone can help me

[Duncanbest]

Re: replacing NVIDIA 8800 GTX mosfets

FYR

http://it.farnell.com/vishay-silicon...so8/dp/1840421

http://it.farnell.com/international-...o-8/dp/1551902

[lele.v]

Re: replacing NVIDIA 8800 GTX mosfets

thank you duncan!

dont know if it's usefult but i attach a photo of the 4 mosfet on the board for completeness