2N vs. PN transistors

[Tim Daugard]

> given a 2Nxxxx number. JAN (I used to remember what that stood for:
> something like
> "Joint American/National" it was part of the E.I.A. committee that did
all
> the RS-xxx specs

JAN = Joint Army Navy - In the military for along time we could only use
JAN parts. Sometimes we would wait a week or two for a part you could by
from any electronics supplier in a half hour. Including the drive off base.
JAN spec'ed parts made sense for aircraft, but sure slowed down repair
times on test equipment.

Tim Daugard