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February 2008

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Subject:	Re: FAB: Thin Trace Failures
From:	Karl Bates <[log in to unmask]>
Reply To:	(Designers Council Forum)
Date:	Thu, 7 Feb 2008 09:36:42 -0600
Content-Type:	text/plain
Parts/Attachments:	text/plain (12 lines)

Recently I have had some failures shorts / opens with PolyClad material, 
some possible causes are contamination (cause unknown), and shorts caused by the aluminum cladding that is added to protect the copper before lamination.
> Date: Thu, 7 Feb 2008 09:32:39 -0600> From: [log in to unmask]> Subject: [DC] FAB: Thin Trace Failures> To: [log in to unmask]> > 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> > ---------------------------------------------------------------------------------> DesignerCouncil Mail List provided as a free service by IPC using LISTSERV 1.8d> To unsubscribe, send a message to [log in to unmask] with following text in> the BODY (NOT the subject field): SIGNOFF DesignerCouncil.> To temporarily stop/(restart) delivery of DesignerCouncil send: SET DesignerCouncil NOMAIL/(MAIL)> Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives> Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815> ---------------------------------------------------------------------------------
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