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Date: | Fri, 9 Jun 2006 08:39:47 -0400 |
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Steve,
Try looking at MIL-C-28809B, Appendix, page 34, Table VIII. Total number of circuit changes of all types permitted. It also has a table for Maximum number of land repairs per PCB. To obtain a copy of this spec go to http://www.dscc.dla.mil/Programs/MilSpec/DocSearch.asp?SrchField=DocNumber&SrchType=Contains&SrchText=28809&DocType=DSCCdwg&DocType=VID&DocType=SMD&DocType=DoDISS&DocType=SubDoc&OrderBy=DocNumber
Eva J
The QA Gal
________________________________
From: TechNet on behalf of Steve Wall
Sent: Thu 6/8/2006 11:30 AM
To: [log in to unmask]
Subject: [TN] Wire link modification guidelines
Hi, I'm looking for some advice regarding any IPC or MIL guidelines on the
amount of wire links (repairs and or modification) allowed on CCAs/PWBs.
I'm aware of the IPC 7721 standard of how to add wire (or jumper) links but
I'm more interested in the amount of links and the length of links
permittable at design release stage and final customer delivery stage. I'm
based in the UK and am aware of an old Naval guideline, NES501, but
wondered if this was now covered within an IPC or MIL standard.
Many thanks in advance.
Steve.
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