Thanks, everyone!

We are revisiting our documentation requirements. We've been using "D" but
maybe move to "DS" to conform to IPC-2612 and others

-=-=-=-

changing the subject:

"BUS" or "BUSS"?

(how can I not know this?)

Jack (aka "the new guy")


On Thu, Aug 1, 2013 at 12:33 PM, Brooks, William <
[log in to unmask]> wrote:

> DS is the correct Ref Des for a lighting device, indicating device, or
> optical indicator or signaling device...
> When they developed the spec we used it for a 'light bulb' or 'Lamp'
> indicator on a front panel for example.
> LED is not specifically called out in the spec but it functions as a
> lighted indicator.
>
> That being said, a light emitting diode is also a semiconductor or
> 'diode', which was a 'CR' or 'D' according to ANSI Y32.2.
> I would think both are 'correct'. (D also described a vacuum tube Diode)
>
> 'D' for Diode takes up the least amount of space on your board... just
> saying. :)
>
>
>
> William Brooks, CID+
> Senior MTS (Contract)
> 2747 Loker Ave West
> Carlsbad, CA 92010-6603
> 760-930-7212
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>
> -----Original Message-----
> From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of Ben
> Jordan
> Sent: Thursday, August 01, 2013 10:00 AM
> To: [log in to unmask]
> Subject: Re: [DC] Informal Poll
>
> The IPC standard takes the IEEE 315-1975 as the baseline. That's the
> earliest source I know of which clearly calls for DS.
>
> In the past I have used D, LD, LED.
>
>
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