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December 2001

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Subject:	Re: Trace cut quality
From:	Leo Lambert <[log in to unmask]>
Reply To:	[log in to unmask]
Date:	Tue, 18 Dec 2001 09:42:59 -0500
Content-Type:	text/plain
Parts/Attachments:	text/plain (54 lines)

The damage laminate can be found in 600 under 2.2.3 Exposed/disrupted
Fibers. Exposed or disrupted fiber areas are considered conductive area and
if they reduce the minimum electrical spacing requirements, they are
nonconforming and must be repaired. IPC 6012, 3.3.2.2 Weave Exposure also
discussed the condition.

Hope this helps

Leo Lambert
EPTAC Corp
[log in to unmask]


-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Shawn Murphy
Sent: Monday, December 17, 2001 6:32 PM
To: [log in to unmask]
Subject: [TN] Trace cut quality


What specification would contain "Trace Cut" information?  We have a
situation where there is obvious damage to the FR4 material between two
leads that had a common trace at one point.  Our conscious tells us to
repair the gouge but we haven't located anything in IPC-610 to tell us what
is acceptable and what isn't.  Any help would be greatly appreciated.

regards,
shawn

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