Amol, I used Sn99C in reflow with terrible results. John >Dear technetters, >Is anybody using SN100 (or other high Sn alloys) for SMT reflow soldering applications? what have your experiences been with this alloy? > >I have a PCB with a BGA, that is cracking due to mechanical stress (that is not SMT process related), we have a combination of solder cracking, and pad cratering. The PCB currently uses SAC305. We also build a SnPb variant of the same exact board with no issues (the bare board material is different for SnPb and LF versions). I was therefore wondering whether SCA305 alloy properties could be a contributing factor this defect. How does the ductility and shear strength of SN100C compare to SAC305 and 67-37SNPb alloy? > >Regards, >Amol > > > > > >WARNING: Export Control >This document may contain technical data within the definition of the >International Traffic in Arms Regulations (ITAR), and subject to the Export >Control Laws of the U.S. Government. Transfer of such data by any means to a >foreign person, whether in the United States or abroad, without proper export >authorization or other approval from the U.S. Department of State is >prohibited. > >CONFIDENTIALITY NOTICE: >This e-mail, and any attachments, is for the sole use of the intended >recipient(s) and may contain information that is confidential and >protected from disclosure under the law. Any unauthorized review, use, >disclosure, or distribution is prohibited. If you are not the intended >recipient, please contact the sender by reply e-mail, and delete/destroy >all copies of the original message and attachments. >Thank you. > >--------------------------------------------------- >Technet Mail List provided as a service by IPC using LISTSERV 15.0 >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 15.0 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 -----------------------------------------------------