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Mon, 31 Jul 1995 10:31:49 -0500
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From [log in to unmask] Sat Apr 27 14:
27:17 1996
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Designing thermals on power and ground planes:

I've heard that rule-of-thumb is an ID of 0.015" over the hole size, and an
OD of 0.020" over the ID.

Questions:
1.  Does IPC have a spec for thermal relief?
2.  Do the rules change as the hole size changes?

Thanks in advance.


-Pat-

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Patrick McGuine
Nicolet Instrument
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(608) 276-6334



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