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March 1998

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Subject:
IPC standard
From:
Anna Björk <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 31 Mar 1998 10:25:56 +0200
Content-Type:
text/plain
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text/plain (28 lines) 
Hello
I have a question about the standard. When we measure the copper
thickness in holes and blind vias we use a lins for 200X magnification.
What says the standard about this? We have the IPC from 1982 and it says
that we should measure at 100X. At this magnification is hard to se
properly. Thank you for your help.

E.mail- [log in to unmask]
-- 
Regards Anna

Anna Björk                    Phone:+46 19 58 65 32
Ericsson Radio Systems            Fax:+46 19 58 45 01
Box 902
692 29 Kumla

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