A hole barrel has quite a larger cross-sectional area (thus current-carrying capability) than a trace of the same width as the hole's diameter. It's not an apples-to-apples comparison.
Tim Reeves
-----Original Message-----
From: Eddie Rocha [mailto:[log in to unmask]]
Sent: Thursday, May 29, 2003 10:48 AM
Subject: Re: Trace thickness problem...
This is only my opinion but if IPC says .7 mils of copper in the hole is
acceptable then .7 mil of copper thickness on a trace should be
acceptable. We're only talking about an isolated spot on a trace.
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