First of all, thanks to everyone for the excellent responses. Thanks to you guys, I have almost enough information to convince the design engineers to change the drawing. The only other information I need is the spec(s) that board builders use to control the immersion silver process. Anyone out there have any that they can share? I know that IPC has IPC-4553 pending release, but are there any others out there? Thanks! Eric Kalgren Manufacturing Engineer Atlantic Microwave Phone: 978-779-7062 Fax: 978-779-0101 -----Original Message----- From: Werner Engelmaier [mailto:[log in to unmask]] Sent: Friday, November 12, 2004 3:28 PM To: [log in to unmask] Subject: Re: [TN] Electrodeposited Silver vs. Immersion Silver Hi Eric, You may not want that much Ag anyway--you've heard of gold-embrittlement. Well, silver-embrittlement is actually worse--so beware. Regards, 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 --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/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 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/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 -----------------------------------------------------