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Date: | Tue, 14 Jun 2005 12:39:39 -0400 |
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Boards should come in ready to be populated. If you need to clean them prior to population that's a defect in our book.
Jerry Dengler
Manufacturing Engineer
Pergamon Corporation
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of ekalgren
Sent: Tuesday, June 14, 2005 11:54 AM
To: [log in to unmask]
Subject: [TN] PCB rejection criteria
Good morning everyone,
I've got a question on bare PCB's. These are relatively simple boards that have been red flagged in incoming inspection for having scratches in the soldermask that expose the underlying copper. Now, even I know that this is truly a defect. QA has also written up the entire lot of boards for being dusty and a couple of the lot for having "excess solder." The excess solder is just a couple of PTH's that are partially filled by the HASL. I'm not sure what the dust is but it blows off easily and doesn't seem to be affecting anything other than the inspector's sense of cleanliness.
My question to all of you out there is: how should I handle the dust issue?
Is this typical of boards coming in from the shop and should I tell the inspectors to go easier in the future or do I demand spotless, dust free boards from our supplier? I don't want to accept junk but at the same time I don't want to drive costs up by over inspecting. Where does one draw the line?
Thanks in advance,
Eric Kalgren
Manufacturing Engineer
Continental Tool and Microwave Company
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Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
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