Hi Ronald, >the Electronics Industry's contentions that High-temperature Soldering is detrimental >to solder joints in general and to the devices into which they are installed in specific. To my knowledge nobody in our industry contends that "High-temperature Soldering is detrimental to solder joints" per se. the problem is that none of the no-Pb solders have a track-record as far as reliability is concerned, and that there is evidence of some problem areas. This has nothing to do with "High-temperature Soldering", even though most no-Pb solders require higher soldering temperatures, but with the relatively unnknown metallurgies involved. "High-temperature Soldering is detrimental to the devices" is simple logic since many of the materials involved are not particularly stable at elevated temperatures and because absorbed moisture will produce higher vapor pressures at higher temperatures. 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 E-mail: [log in to unmask], Website: www.engelmaier.com --------------------------------------------------------------------------------- Technet 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 Technet To temporarily halt delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------