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Subject:	Re: lead free soldering "fillet lifting"
From:	Dennis Becker <[log in to unmask]>
Reply To:	[log in to unmask]
Date:	Fri, 23 Sep 2005 08:42:32 -0500
Content-Type:	text/plain
Parts/Attachments:	text/plain (50 lines)

FYI

Dennis Becker



-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Werner Engelmaier
Sent: Friday, September 23, 2005 5:19 AM
To: [log in to unmask]
Subject: Re: [TN] lead free soldering "fillet lifting"


Lieber Roland,
Filet lifting is the result of having a Bi-containing solder and 
contaminating Pb forming a low-melt-temperature ternary phase with Sn
which has a Tm=96C. 
Making the fillet bigger will not solve this problem.

Viel Glück an Deiner Arbeit mit diesem blei-freien Schildbürgerstreich,
Werner Engelmaier Engelmaier Associates, L.C. Electronic Packaging,
Interconnection and Reliability Consulting 7 Jasmine Run Ormond Beach,
FL 32174 USA
Phone: 386-437-8747, Fax: 386-437-8737, Cell: 386-316-5904
E-mail: [log in to unmask], Website: www.engelmaier.com


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