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January 2000

DesignerCouncil@IPC.ORG
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DesignerCouncil <[log in to unmask]>
Subject:
Re: Reference Designators
From:
Rick Wilson <[log in to unmask]>
Date:
Mon, 10 Jan 2000 12:53:19 -0600
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1.0
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Jack Olson <[log in to unmask]>
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"DesignerCouncil E-Mail Forum." <[log in to unmask]>, Rick Wilson <[log in to unmask]>
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Jack,
The CR is for Crystal Rectifier. Don't remember about the U or K. I use J on
connectors.

Rick Wilson
Pathfinder Energy Services

 -----Original Message-----
From:   Jack Olson [mailto:[log in to unmask]]
Sent:   Monday, January 10, 2000 12:22 PM
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

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