Hi Dale, In all your descriptions, you are not telling us what the failure mode actually is. On the basis of what do 75% not pass? Are the failures just some undefined functional dysfuction?—your wire-bond inclusion in the discussion leads me to believe this. You also are not telling us what the reflow profiles [both standard and increased] at the QFP leads [not the PCB soldering pads] are. This is needed to make sure that the heat sink, which the die is and to which the leads are attached, does not keep the lead temperature too low even with your increased profile. Werner Engelmaier Future workshops: Solder Joint Reliability: Parts 1 through 4, July 21/22, Hamburg, Germany Pb-Free Soldering Processes—Survival, Quality, Reliability, August 18, Orlando Reliability Issues with Lead-Free Soldering Processes, September 22, Schaumburg Failure Mode and Root Cause Analyses Reliability (Fatigue, Brittle Fracture, ENIG), September 22, Schaumburg Solder Joint Reliability: Parts 1 & 4, Oct. 9, Moscow, Russia Solder Joint Reliability: Parts 1 & 4, Oct. 17, Timisoara, Rumania Solder Joint Reliability: Parts 1 & 4, Oct. 22, Tallinn, Estonia ************** Get fantasy football with free live scoring. Sign up for FanHouse Fantasy Football today. (http://www.fanhouse.com/fantasyaffair?ncid=aolspr00050000000020) --------------------------------------------------- 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 -----------------------------------------------------