Was any electrical testing conducted? Victor, -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Leland Woodall Sent: Wednesday, May 26, 2010 2:31 PM To: [log in to unmask] Subject: [TN] MSD Devices and Popcorning Just on a note of curiosity, how many folks out there are using a sophisticated RFID process to track their MSD exposure times? We're using a manual system, and lately I've had a couple of people inquiring about moving to something much more expensive. In my ten years here, we've never seen either an internal nor external failure due to popcorning, micro cracks in our devices, or anything along those lines. A few years ago, I took 10 scrap ICs and soaked them in a glass of water over a four day weekend. When we returned on a Tuesday, I pulled them out, dried the surfaces off, and sent them through a lead free process reflow oven on a bare board. After everything I'd read and investigated, I expected them to explode. I performed an intense examination of both sides of the components under 100X magnification, and I was extremely surprised to see no incidents of popcorning nor package cracks. I then checked them in our X-ray machine, and saw no evidence of any bond wire detachments. Has anyone conducted a similar experiment with dissimilar results? I'm just wondering if we're making a mountain out of a mole hill here... Thanks, Leland ______________________________________________________________________ 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 ----------------------------------------------------- ______________________________________________________________________ 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 -----------------------------------------------------