One of our guys brought over a counterfeit parts manual with a picture of some component leads exhibiting a rough orange-peel texture. The picture was presented as evidence of re-tinning, which could indicate a counterfeit part. The question is what could cause orange peel finish after hot solder dip? We perform a lot of hot solder dip, both in-house and outside, and neither of us could remember the last time we saw anything like this, though it does look kind of familiar. In the picture, we could see no obvious patches of de-wetting or non-wetting, just a uniform pebbly surface. I don't think this would be caused by a solderability problem, or rapid cooling, could it be too little immersion time in the hot solder? Could the solder in the pot be contaminated with something like copper, gold, or iron? -Joe ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- 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 -----------------------------------------------------