Hi Ken, Regarding Tin whisker issues see the paper " iNEMI recommendations on lead-free finishes for high-reliability product" at their web site (www.nemi.org/projects/ese/tin_whisker_activities.html). SAC finish is not backwards compatible, and Bi finishes is questionable. Regards, Dr. Gil Zilber Technologist, Elta system Ltd. Tel. +972-8-8577240 Mobile +972-54-4983222 http://www.iai.co.il/site/en/iai.asp?pi=17887 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Bloomquist, Ken Sent: Thursday, November 10, 2005 6:58 PM To: [log in to unmask] Subject: [TN] Solderable Lead Free Components Another lead free question, oh boy! We are an aerospace black box manufacturer serving the commercial airlines as well as DOD. It looks like it will be a while before we have to transition to lead free assemblies. Since a large portion of the industry is going lead free we are getting notices from our component suppliers that certain components are no longer available with a tin/lead finish. So that we don't have to evaluate every component finish notice that comes in is there a list of finishes that are acceptable and unacceptable for soldering with tin/lead solder? We all know that heavy gold plating is not good and some tin plating is questionable because of "tin whiskers". Does anybody have some good guidance that might help us with these component evaluations? Thanks, KennyB --------------------------------------------------- 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 ----------------------------------------------------- This message is processed by the PrivaWall Email Security Server. The information contained in this communication is proprietary to Israel Aircraft Industries Ltd. and/or third parties, may contain confidential or privileged information, and is intended only for the use of the intended addressee thereof. If you are not the intended addressee, please be aware that any use, disclosure, distribution and/or copying of this communication is strictly prohibited. If you receive this communication in error, please notify the sender immediately and delete it from your computer. Thank you. This message is processed by the PrivaWall Email Security Server. --------------------------------------------------- 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 -----------------------------------------------------