[Test-Equipment] Transistor part numbers

[pete wokoun, sr.]

It would get confusing with diodes:  one way it would be a 1N34, in the 
other direction it would be a 1P34.


>From: Bryan Fields <kb9mci at qsl.net>
>To: test-equipment at mailman.qth.net
>Subject: Re: [Test-Equipment] Transistor part numbers
>Date: Mon, 2 Jan 2006 13:15:59 -0600
>
>On Monday 02 January 2006 01:03 pm, Rasputin Novgorod wrote:
> > I notice that transistor part numbers frequently start
> > with 2N, eg: 2N3055. So, why don't PNP transistors start
> > with 2P
>
>The 2 stands for how many layers they have.  It's one less then the number, 
>so
>a PNP and NPN have 3 layers so the number is 2N.  a diode has 2 layers so 
>the
>number is 1N.
>--
>Bryan Fields, KB9MCI