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February 1997

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Subject:
Re: FAB: Soldermask Encroachment
From:
Bob Willis <[log in to unmask]>
Date:
13 Feb 97 13:33:27 EST
Content-Type:
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Normally the clearance for photo image is 5-6 thou and 10 thou for screen print.
That is often used for both through hole and surface mount and test pads. It
needs to be bigger for fiducial marks.

Bob Willis
Process Engineering Consultant
Electronic Presentation Services
2 Fourth Avenue, Chelmsford, Essex CM1 4HA. England.
Tel: (44) 01245 351502
Fax: (44) 01245 496123
Home Page: http://ourworld.compuserve.com/homepages/Bwillis
Email: [log in to unmask]


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