The concept discussed below is already in process by the IPC Solder Products Value Council. You can download FREE copy of a white paper about this at http://leadfree.ipc.org/LeadFreeWP006.asp Jack Jack Crawford Director, Certification and Assembly Technology [log in to unmask] 847-790-5393 fax 847-504-2393 -----Original Message----- From: Tempea, Ioan [mailto:[log in to unmask]] Sent: Friday, January 09, 2004 2:45 PM To: [log in to unmask] Subject: [TN] Qualification of a lead-free process Hi Netters and Free folks, I have a good one about lead-fee. It is common knowledge that lead-free materials and a process have to be qualified. But what would this mean? OK, I chose the SMTA Saber board as a test vehicle. I approached a few paste suppliers and I will probably use the products of 2 or 3 of them to stuff a certain number of boards. I will get support and tweak the reflow and wave recipes, let's consider this done. But, what next? First of all, what quantity of boards would be a good test batch for each different paste? Then, I must confess that I am not a reliability guy, so what tests should I perform? Cleanliness (is it really necessary?), pull tests, vibration? What accelerated joint reliability tests to do? Simply go through IPC 9701 and pick something that matches the application? Any clue would be largely appreciated. Thanks, Ioan --------------------------------------------------- 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 -----------------------------------------------------