We have used that designator for diodes here for years.  It stands for
Crystal Rectifier.

Larry

-----Original Message-----
From: Jack Olson [mailto:[log in to unmask]]
Sent: January 10, 2000 11:22 AM
To: [log in to unmask]
Subject: [DC] Reference Designators


Something I overheard this morning got me wondering...

Have any of you been around long enough to know why a diode would have a
designator of CR? What does the CR mean?

What does the U mean on an Integrated Circuit?

Is the K on relays arbitrary since R is used by resistors?

Does anyone really use P anymore for plugs?
(everything I've seen lately is J on connectors, no matter if it is a socket
or a plug)

What do you use for submodules or subassemblies?

Not really important, I was just curious....

Jack