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October 1999

DesignerCouncil@IPC.ORG
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Subject:
2 oz Cu ??
From:
"Scott D. Shepard" <[log in to unmask]>
Reply To:
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Date:
Tue, 19 Oct 1999 04:14:58 -0700
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These questions may seem trivial, but I really haven't needed the answer
for a while.

I just went through a checking session for a board for someone. The db
look pretty good except for the areas where there is 7.5 mil air gap.
This is basic clearance used although it passes at 8 mils minus these
7.5 mil areas. The Cu weight will be 2 oz. Is 7.5 mil clr OK for 2 oz
Cu?

Also, this same pcb will be 6 layers. Can all layers be 2 oz Cu?

BTW: it's FR4 at .093 thk.

TIA,

Scott
IDS

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