: <[log in to unmask]> : <[log in to unmask]> X-NAI-Spam-Level: : <[log in to unmask]> X-NAI-Spam-Level: Here is an article I found that Sanmina wrote that I thought would be of interest to all concerning SAC105. http://www.sanmina-sci.com/partners/QAR-0009-C.pdf Scott Lefebvre -----Original Message----- From: Stadem, Richard D. [mailto:[log in to unmask]] Sent: Thursday, May 17, 2007 6:28 AM Subject: Re: Changing BGA solderballs from SAC405 to SAC105 Ioan, Where are these studies showing that soldering of LF BGAs with leaded solder is a good practice? Can you post a link? -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Tempea, Ioan Sent: Thursday, May 17, 2007 6:58 AM To: [log in to unmask] Subject: Re: [TN] Changing BGA solderballs from SAC405 to SAC105 Well Phil, I haven't really been following this, but I am worried. We already have too many customers asking us to solder LF BGAs with leaded solder and the deal was to get the BGA balls to melt, at around 220C. I was happy that studies started to surface showing this was good practice and the result was reliable. How will I be able to solder the SAC105 with leaded? And we already have an inspector full time on the XRF, just to make sure Pb is not there. Now I will have to ask them to measure the composition of the balls... When will it end? Just my concerns! Ioan -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Phillip Bavaro Sent: Wednesday, May 16, 2007 8:31 PM To: [log in to unmask] Subject: [TN] Changing BGA solderballs from SAC405 to SAC105 I haven't been following the transition to use SAC105 so I would appreciate any advice those of you who have already gone down this path might have. SAC405 and SAC305 was considered compatible with our SAC305 paste, but now there is a component which is changing the solderballs to SAC105. SAC105 has a higher liquidus temperature (226 C) than SAC305 (217 C) . Is this going to impact our assembly processes? Does it only tighten up the reflow process window? Is this transition something that the majority of manufacturers of components are going to undertake soon? Thanks in advance, Phil --------------------------------------------------- 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 ----------------------------------------------------- --------------------------------------------------- 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 ----------------------------------------------------- --------------------------------------------------- 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 -----------------------------------------------------