Good information at this site, but it seems like the link to: -GEIA G-12 Committee, "GEB-0002: Reducing the Risk of Tin Whisker-Induced Failures in Electronic Systems", December 2003 Seems to be broken. Anyone have a copy of this report or know where to get one? -Joe -----Original Message----- From: David Douthit [mailto:[log in to unmask]] Sent: Friday, February 13, 2004 12:09 PM To: [log in to unmask] Subject: Re: [TN] Pure Tin Component Finish Scott, Go to: http://www.nepp.nasa.gov/whisker/index.html For the latest and greatest on tin whiskers. David A. Douthit Manager LoCan LLC Newland, Scott wrote: >During our resent lead free evaluation it was discovered that several of our >component vendors are changing their finishes from tin- lead to pure tin. Quite >often this change is being made with no part number change, so these part are >getting to our manufacturing floor without anyone knowing they have a different >finish. This has lots of people's attention due to the Hi Rel nature of most of >our products. We have narrowed our concerns to two: tin whiskers and solder >joint reliability. There is a lot of work being performed on tin whiskers. Do >you see the pure tin component finish impacting the tin- lead solder joint >metallurgy to the point of impacting high or low cycle fatigue?? Typical I >would think the component finish would be a small percentage of the total volume >of the solder joint, resulting in minimal impact. But I'm afraid the >inter-metallic layers maybe impacted, resulting in changed reliability. > >The opinions of this group would be valued. > > >Scott Newland >Harris GSCD >321 727 6472 >Pager 321 690 4131 >E-Mail <mailto:[log in to unmask]> [log in to unmask] >For a brain teaser try: > <http://pao.gsfc.nasa.gov/science.html> http://pao.gsfc.nasa.gov/science.html > >This information is only intended for the use of the individual or entity named >in this email. If you are not the intended recipient, you are hereby notified >that any disclosure, copying, distribution, or use of the contents of this >information is strictly prohibited. If you have received this email in error, >please notify me and delete it immediately. > > >--------------------------------------------------- >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 847-509-9700 ext.5315 >----------------------------------------------------- > > > > --------------------------------------------------- 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 847-509-9700 ext.5315 ----------------------------------------------------- --------------------------------------------------- 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 847-509-9700 ext.5315 -----------------------------------------------------