Hi 

I've seen overetched traces that look like that from the top,
but never from the side ...
My guess is that it's a default in the base material.

Regards,

Andre Demers, C.I.D.
Senior PCB Designer, Coordinator
cmrsummit Technologies
329 March Road, Suite 203
Kanata ON K2K 2E1
Canada

Telephone: 613.599.3881
Toll Free: 877.428.1229
Pager: 613.368.0506 
Fax: 613.599.7889 

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www.cmrsummit.com <http://www.cmrsummit.com/> 



-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of Jack
Olson
Sent: Thursday, February 07, 2008 10:33 AM
To: [log in to unmask]
Subject: [DC] FAB: Thin Trace Failures

Has anyone ever seen a cross-section like this?

http://www.frontdoor.biz/PCBportal/opentrace.jpg

(ignore the words on the pic, just a guess)

Can you point me in the right direction for cause?

thanks,
Jack

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