Charles, Are the green residues at the toe of the leads? If so, then as Brian states, you are most likely looking at copper carboxylates. Bev Christian Research in Motion -----Original Message----- From: Charles Caswell [mailto:[log in to unmask]] Sent: May 4, 2004 5:43 PM To: [log in to unmask] Subject: [TN] Green residue. I just got some pictures from a customer of what appears to be some green residue on some of the SMT leads. It is only on a couple of components on one assembly of five. We used a water soluble paste for the SMT, water soluble flux for hand solder and washed in a Westek inline cleaner with saponifier. I have seen the saponifier turn brass a blue/green color but not even close to this green. There are some connectors and one IC that do not go through the wash and are hand cleaned first with IPA and then a water rinse. Anybody got an idea? Maybe (please) I could get Steve to post a picture. Thanks in advance. Charles Caswell The Big Kahuna --------------------------------------------------- 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 -----------------------------------------------------