replacing mosfet tpca8109

[dqtech]

i have acer Aspire ES1-432 DA0ZQFMB6F0 which is the mosfet tpca8109 damage...is that possible to replace mosfet TPCA8109 with AO4447A?

Datasheet AO447A



Datasheet TPCA8109

[mon2]

Re: replacing mosfet tpca8109

The pinout is the same - both are P-channel.

However, the replacement AO4447A is a lower current device @ 17A vs. the original @ 24A.

Otherwise, yes it will work.

You can try it and monitor the temp of this device. If your logic board consumes < 17A then this replacement part is a valid replacement.

[usyusy]

Re: replacing mosfet tpca8109

AO4447A is a lower current device @ 17A vs. the original @ 24A.

sir if any mos' current is lower, does it mean that it's a better one?

[mon2]

Re: replacing mosfet tpca8109

No. It is the opposite. The higher the current support, the better the part.

To achieve the higher current support - the Rds value will be lower (this is the resistance is in milliohms). Here, the lower the Rds value, the better the part.

Much like a car - more horsepower, the faster the car can run.

But if the logic board does not consume the high current value then often you can replace with a lower current part. That is, the mosfet is often overrated to be safe and to allow the mosfet to run cooler.

TI has some great mosfets but of course hardly any are available in the current marketplace. Our local rep mentioned that TI is building a new FAB in Texas so their capacity will improve 'soon' and parts will return to a normal flow.

[piernov]

Re: replacing mosfet tpca8109

https://logi.wiki/index.php/User:Pie...iginal_part.3F

[usyusy]

Re: replacing mosfet tpca8109

ok got the concept clearance, thanks sir mon2 and piernov.