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Subject:	Re: Reject Identification
From:	"Howieson, Rick" <[log in to unmask]>
Reply To:	TechNet E-Mail Forum.
Date:	Thu, 6 Apr 2000 14:07:47 -0600
Content-Type:	text/plain
Parts/Attachments:	text/plain (50 lines)

Punch a hole in it or cut a trace and it will fail at test.
Rick

>-----Original Message-----
>From:  Dave Kell [SMTP:[log in to unmask]]
>Sent:  Thursday, April 06, 2000 1:47 PM
>To:    [log in to unmask]
>Subject:       [TN] Reject Identification
>
>I am wondering if anyone has a good method of marking rejects on internal
>layers of PCB's such that they are detectable on the external layers.  We are
>a flex-circuit manufacturer and this has not been a problem on lower layer
>counts, but more opaque materials make internal marking hard to detect.  Keep
>in mind that these rejects are not always opens or shorts, but may be pattern
>width or spacing violations.
>
>Any help would be appreciated
>
>Dave Kell
>Product Assurance
>
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