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Can MOS tube F9530 be replaced by IRF640, IRF740?

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Hi there,
while the IRF9530 is a p-channel mosfet (conducts with negative gate voltage), both the IRF640 & IRF740 are n-channel mosfet (conducts with positive gate voltage). Because of this difference alone, my (uneducated) guess would be that a drop-in replacement would not work. I'd recommend looking for a p-channel mosfet with similar stats as the IRF9530, or just to buy an actual IRF9530.

That being said this forum is actually not dedicated to electronics, but the videogame Space Station 14, short SS14, so you'll probably get more qualified help elsewhere.



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