I notice in the IPC Archives that all of the questions and comments about alloy 42 were in the ~1994-1995 time period. Has the general population out there totally rejected TSOPS with alloy 42 leads? No comments or questions appear from 2001 to present. -----Original Message----- From: Werner Engelmaier [mailto:[log in to unmask]] Sent: Tuesday, March 16, 2004 6:43 AM To: [log in to unmask] Subject: Re: [TN] TSOPs Hi Edwin, >Are there any specifications ,standards or articles on soldering TSOPs >especially ones with Alloy42 leads? There are some papers: Engelmaier, W., "Alloy 42--Not a Choice Material for Surface Mount Leads," 35th Annual IPC Meeting, Bal Harbour, FL, April 1992. Engelmaier, W., and B. Fuentes, "Alloy 42: A Material to be Avoided for Surface Mount Solder Component Leads and Lead Frames," Proc. Surface Mount International Conf., San Jose, CA, August-September 1994, pp. 644-655; also in Proc. Int. Electronics Packaging Conf. (IEPS), Atlanta, September 1994, pp. 503-516; also in Proc. 19th Ann. Electronics Manufacturing Sem., Naval Air Warfare Center, China Lake, CA, February 1995, pp. 5-20; also in Proc. NEPCON West ‘95, Anaheim, CA, February-March 1995, pp. 385-395; also in Soldering & Surface Mount Technology, No. 21, October 1995, pp. 20-25. 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 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 847-509-9700 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 -----------------------------------------------------