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TechNet <[log in to unmask]>
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Date:
Thu, 7 Aug 2014 10:25:48 -0500
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TechNet E-Mail Forum <[log in to unmask]>, Mordechai Kirshenbaum <[log in to unmask]>
Subject:
Minimum allowed Etch Factor
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Mordechai Kirshenbaum <[log in to unmask]>
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Dear Sir

Dear Sir

Is there a criteria or a  requirement for the minimum allowed "etch factor”
i.e. the ratio of the depth of etch to the amount of lateral etch as defined by # 3.2 of IPC-A-600 
and depicted in fig  IPC-600g-321a.

Mordechai

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