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May 2003

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Subject:
From:
"Barmuta, Mike" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 30 May 2003 09:23:55 -0700
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Steve: 1oz Cu foil on a finished outerlayer is typically 1300 microinches.
You got some pretty thin copper at 170 microinches if the units and analysis
are correct.
 
 
Regards
 
Michael Barmuta
 
Staff Engineer
 
Fluke Corp.
 
Everett WA
 
425-446-6076
 

                                                 

-----Original Message-----
From: Steve Gregory [mailto:[log in to unmask]]
Sent: Friday, May 30, 2003 9:13 AM
To: [log in to unmask]
Subject: [TN] Micro-inch to copper weight conversion...


Hi All,

I got my boards back from our fab vendor (the ones that had the trace
thickness problem), and they sent the XRF measurements that they took. But
they're in microinches, is there some conversion that you do to convert that
to copper weight?

Here's the measurements that I got:

       µin Cu      
1.    170.9
2.    173.0
3.    170.1
4.    170.6

Thanks in advance!

-Steve Gregory-    ---------------------------------------------------
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