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January 1999

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Subject:
From:
KELLY M SCHRIVER <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Thu, 7 Jan 1999 07:42:00 -0500
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Hi Larry -

We use a materials note that reads somewhat as follows:

# Fabricate goard from laminates and bonding materials conforming to
IPC-4101/**.  Nominal starting copper is 1/2 ounce [153 G/M2] on layers *, *,
*, *, *, * and 1 ounce [306 G/M2] on layers *, *, * and *.   [Cladding type,
if critical, is also spelled out in this note using IPC4101 table 1].

The specifics of layer to layer spacing, allowable etch factors, etc., are all
detailed elsewhere in the drawing notes.

Hope this helps - Kelly

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