Do you specifically know the chip parts have a SAC alloy coating, have you had them tested and confirmed? The parts I use and test are normally just tin? Bob Willis 2 Fourth Ave, Chelmsford, Essex, CM1 4HA England Tel: (44) 1245 351502 Fax: (44) 1245 496123 Mobile: 07860 775858 www.ASKbobwillis.com New Bob Willis "Printed Board Inspection & Quality Control Workshop" 3rd September www.ASKbobwillis.com/PCBworkshop.pdf Book your place on Bob's "Step by Step Failure Analysis Workshop" 11th September www.ASKbobwillis.com/faworkshops.pdf -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of David Fischer Sent: 20 June 2008 18:18 To: [log in to unmask] Subject: [TN] SAC Plated Passives with SnPb Solder Paste Good Day, I am aware of the nuances of mixing SAC solder ball BGA's with SnPb solder paste, but are there any concerns, cautions or steps to take when soldering SAC plated passives (chip resistors, chip caps) to a PCB using SnPb solder paste? Thanks, David Fischer Manufacturing Engineering Manager ATEOps NPI Teradyne, Inc --------------------------------------------------- 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 -----------------------------------------------------