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March 1998

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TechNet <[log in to unmask]>
Subject:
PTH Positional Hole Tolerance
From:
Richard G Smith <[log in to unmask]>
Date:
Fri, 13 Mar 1998 07:25:50 -0600
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"TechNet E-Mail Forum." <[log in to unmask]>, [log in to unmask]
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     Hi All,

     Here's the issue:

     We specify in our fab spec that all holes are to be within .003" of
     their corresponding pad center (true position of .006"). We are being
     told by our fab house that this tolerance is unreasonably tight.

     Any comments???

     Thanks,
     Rick

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