You sure you're not confusing lead-free with non-brominated? -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of John Burke Sent: Thursday, October 26, 2006 3:09 PM To: [log in to unmask] Subject: Re: [TN] Backward Compatibility of Tin Electroplating Ah yet another source of environmental impact - suppliers blowing smoke over lead free soldering issues. I wonder what the environmental impact of the blown smoke will be......8-) John -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Richard Kraszewski Sent: Thursday, October 26, 2006 11:59 AM To: [log in to unmask] Subject: Re: [TN] Backward Compatibility of Tin Electroplating I greatly appreicate you sharing your thoughts on this matter. I especially like the welding comparison. I'm convinced that this supplier is stretching for any explanation and merely blowing smoke. Thanks again. Rich K ________________________________ From: TechNet on behalf of Werner Engelmaier Sent: Thu 10/26/2006 1:27 PM To: [log in to unmask] Subject: Re: [TN] Backward Compatibility of Tin Electroplating Hi Rich, For soldering, in stark contrast with welding, the joints are made by the dissolution of the the base metal without melting it, by being in intimate contact with the liquid solder. Thus, all that is required is that the temperature be slightly above the Liquidus of the solder [183C for eutectic Sn/Pb, 217C for eutectic SnAg Cu]. Thus, when you are soldering to tin plating, you do not reach 232C. Werner --------------------------------------------------- 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 ----------------------------------------------------- --------------------------------------------------- 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 -----------------------------------------------------