As Pogo the Possum once said, "We have met the enemy and he is us." Thanks to your feedback we realized that the issue of immersion silver versus HASL in the PTH's was a red herring, so we dug deeper and found that our engineer had changed the connectors on the BOM and neglected to update the schematic, so the PCB layout designer was never aware of it. The engineer assumed that since the lead spacing on the new part was the same, it was a drop in replacement part. Unfortunately, the flat leads were wider than the earlier part. Our BOM's are maintained using Agile's PDM system which unfortunately has no direct link to the PCB design tool so the hole diameters were never increased to accommodate the new part. Sounds like I have a process with a flaw in it to fix. Again, thanks for all the feedback and a better understanding of IS. Bob Croslin The Nielsen Company --------------------------------------------------- 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 -----------------------------------------------------