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Reply To: | TechNet E-Mail Forum. |
Date: | Tue, 20 May 2003 10:19:34 -0700 |
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You're kidding! They need to be testing all of them. Why bother with testing one from each lot? The point of bed-of-nails electrical test is to screen out defective boards. Otherwise, don't bother testing any.
Timothy Reeves
Technical Service Engineer - Matsushita Electronic Materials - Forest Grove, OR
(503) 992-5109 (503) 357-8868 Fax (503) 781-1495 Mobile
-----Original Message-----
From: Charles Caswell [mailto:[log in to unmask]]
Sent: Monday, May 19, 2003 1:23 PM
Subject: Re: PCB_OPEN_VIAS_PROBLEMS
In our case I have been told that the netlist testing is only done on one out of the lot.
Charles
-----Original Message-----
From: Fineline Circuits, Inc. [mailto:[log in to unmask]]
Sent: Monday, May 19, 2003 4:26 PM
To: [log in to unmask]
Subject: Re: [TN] PCB_OPEN_VIAS_PROBLEMS
Wesley:
Weren't these boards tested by your board supplier? Electrical testing
should have failed the boards with the open vias . The vias may have voids
due to bad drilling and deburring which may clog the hole, poor smear
removal or malfunction of the electroless copper line-trapped air or could
be plating voids. Cross section of the open vias should pinpoint the
problem.
Sona
Fineline Circuits Inc.
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