This will give you the story - They are slightly different....


http://www.ece.utexas.edu/~valvano/EE345L/DataSheets/PN2222-D.pdf


73,

Jb - N6API




John J. Bahun
DTS Engineer
CoreOS/Hardware
Apple Computer Inc.
3 Infinite Loop - Mail Stop 303-2T
Cupertino, California  95014



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On Jul 25, 2006, at 11:28 AM, Ben Hofmann KB1AHR wrote:

What's the difference between a PN2222 and a PN2222A transistor? When used as a switch, can a PN2222 be used as a substitute for the PN2222A? Thanks.

  -Ben  K1NT
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