End the virdict is.... ? :-) ----- Original Message ----- From: [log in to unmask] <[log in to unmask]> To: TechNet E-Mail Forum <[log in to unmask]>; Igoshev, Vladimir Sent: Thu Feb 07 11:00:38 2008 Subject: Re: [TN] SAC on gold pins Hi gang! Just an FYI - the IPC 4-14 Plating committee, George Milad and Gerard O'Brien are the chairs, is wrapping up a very large round robin testing program which investigated the impact of "loading up" a solder joint with silver. The committee looked at BGAs, QFNs, QFPs, and resistors (good component style cross section) and solder joint silver contributions from the pwb finish, the solder alloy and the component finish. Thermal cycle testing per IPC-9701 was conducted. The committee report should be released sometime in the next few months. Extensive failure analysis, cross-section work and SEM elemental mapping - lots of fun data for folks to digest. Dave Hillman Rockwell Collins [log in to unmask] "Igoshev, Vladimir" <[log in to unmask]> Sent by: TechNet <[log in to unmask]> 02/07/2008 08:45 AM Please respond to TechNet E-Mail Forum <[log in to unmask]>; Please respond to "Igoshev, Vladimir" <[log in to unmask]> To [log in to unmask] cc Subject Re: [TN] SAC on gold pins Hi Werner, I was expecting your replay with respect to "Ag embrittlement":-). However, with the exception of your verbal referrences to an old and confidential report, I haven't seen any published data provingv the point. I always look forward to learn something new, though :-). Regards, Vladimir ----- Original Message ----- From: [log in to unmask] <[log in to unmask]> To: Igoshev, Vladimir; [log in to unmask] <[log in to unmask]> Sent: Thu Feb 07 09:12:06 2008 Subject: Re: [TN] SAC on gold pins Hi Vladimir, I did not think Genny's question related to solder joints. However, your point about Au-embrittlement needs to be corrected. Ag-embrittlement is as bad as au-embrittlement, and for the very same reasons. And the effect of the two in combiation is additive. Werner ************** Biggest Grammy Award surprises of all time on AOL Music. (http://music.aol.com/grammys/pictures/never-won-a-grammy?NCID=aolcmp00300000002548)