[Test-Equipment] Transistor part numbers

[Bryan Fields]

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
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