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August 2006

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Subject:
Etch Factor Design Guidelines
From:
Babcock John <[log in to unmask]>
Reply To:
(Designers Council Forum)
Date:
Wed, 16 Aug 2006 09:45:35 -0700
Content-Type:
text/plain
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text/plain (31 lines) 
I have a question.  Did you ever develop good guideline numbers for
trace and space when dealing with etch factor?

I've been hearing all kinds of different (minimum) trace/space numbers
lately when dealing with different copper thicknesses.

Cu Thickness    Trace           Space

0.5oz                5          5
1.0oz                8          8
2.0oz                12         12
3.0oz                20         20
4.0oz                25         25

Are these in the ballpark with your guidelines? 


John Babcock, C.I.D.
PCB Designer III
Phone: 509.241.4641
www.spraycool.com

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