Arlene:

IEEE Std 315 (aka ANSI Y32.2 and CSA Z99) has a comprehensive listing of
reference designators.

CR (or D) can be any of a number of types of diodes; crystal diode and
current regulator being among the choices.

Rich.  

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Cicchiani, Arlene M.
Sent: Thursday, October 12, 2006 12:27 PM
To: [log in to unmask]
Subject: [TN] CR designator

What does "CR" stand for, when used as a reference designator, for a
diode, on a PWB?
Arlene Cicchiani

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