How do you tell PNP from NPN

Neil Morrison neilsmorr at HOTMAIL.COM
Thu Feb 13 20:25:45 EST 2003


Basically, you can identify the base, and whether PNP/NPN, by using a
multimeter. Just identify it as two diodes.

Neil

----- Original Message -----
From: "Dan Pividal N4VET" <OTAKEBI at AOL.COM>


> Do any of you know a sure fire way to tell if a transistor is NPN
or PNP?
> I know the base is the middle lead and that if I hold the flat part
of the
> transistor toward me with the leads down that should put the
emitter to the
> far left.
> But, that is not the case with all transistors.
> Can anyone help?
> Thanks,
> Dan

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