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Subject:	Re: spec on stray copper
From:	Hans Hinners <[log in to unmask]>
Reply To:	TechNet E-Mail Forum.
Date:	Tue, 7 Nov 2000 05:54:12 -0800
Content-Type:	text/plain
Parts/Attachments:	text/plain (69 lines)

Hi Brian,

Here ya go!

IPC-A-600 Rev C  2.10.1.2 Conductor Spacing


Target Condition - Class 1, 2, 3

Conductor spacing meets dimensional requirements of the procurement
documentation.

Acceptable - Class 3

Any combination of edge roughness, copper spikes, etc., that does not reduce
the specified minimum conductor spacing by more than 20% in isolated areas.

Acceptable - Class 1, 2

Any combination of edge roughness, copper spikes, etc., that does not reduce
the specified minimum conductor spacing by more than 30% in isolated areas.

Hans

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Hans M. Hinners
Process Engineer
Toppan Electronics, Inc.
770 Miramar Road
San Diego, CA 92126
(858) 695 - 2222 ext. 241
(858) 695 - 6823 fax
[log in to unmask]


-----Original Message-----
From: Brian Hall [mailto:[log in to unmask]]
Sent: Tuesday, November 07, 2000 5:31 AM
To: [log in to unmask]
Subject: [TN] spec on stray copper


Does anyone know if there is a spec on the size a particle of stray copper
can't exceed on the outer layer of a circuit board?

Thanks

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