I something like once at a former place of employment. But the plating was gold over some kind of ferrous lead frame (Kovar??). The devices were ceramic with flat leads. One time buy, and stored for years. We formed them for through-hole insertion, just prior to use. In one lot, some of the leads fractured when formed, on others the lead finish cracked (as in your picture). The leads had rusted under the plating. It was ugly. The solder wet up the lead finish. But, it was fairly easy to pull the leads right out of the solder fillet. -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Stephen Gregory Sent: Monday, March 07, 2005 11:11 AM To: [log in to unmask] Subject: [TN] Peeling Plating... YAY! IT'S MONDAY!!! YAY! (Ya'll are probably saying; "Sheesh, what's Steve been smoking?") I'm not smoking anything...I said "YAY" with my tongue in my cheek, so to speak. It's Monday again, and I have a couple of pictures for you to look at and let me know if any of you have seen anything like this before. We got these pictures from our customer asking us if we know what might have caused this. Go to: http://www.stevezeva.homestead.com and look at "Plating Peel" and "Plating Peel Close-up". Obviously, this is something that you don't want to see on component leads. It kinda' looks like the lead is shedding it's skin... We're going to contact the component vendor about this to see if they can shed some light on why this is happening...I wished I had the assembly here that the pictures came from, but we only have the photos right now. Anybody ever seen this before? "Monday, monday...can't trust that day Monday, monday...sometimes it just turns out that way Oh monday mornin' you gave me no warnin' of what was to be Oh monday, monday...how could you leave and not take me." -Steve Gregory- Senior Process Engineer LaBarge Incorporated Tulsa, Oklahoma (918) 459-2285 (918) 459-2350 FAX __________________________________________________________________ This message may contain information that is privileged and confidential to LaBarge, Inc. It is for use only by the individual or entity named above. If you are not the intended recipient, you may not copy, use or deliver this message to anyone. In such event, you should destroy the message and kindly notify the sender by reply e-mail. --------------------------------------------------- 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 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- 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 847-615-7100 ext.2815 -----------------------------------------------------