Hi Joe, and LF Listservers, I wonder if under this subject WernerE and other long term Reliability Engr's thoughts touched on the wide ATC temperature range used for some of these ATC tests. Potentially the range that it used for SnPb is causing a false field accelerated failure for LeadFree. Werner noted some of this under the ATC note series when he noted that you should have a dwell and a smaller range when performing ATC tests. Please add to your thoughts on why Moisture might be causing a particular problem with certain capacitors. Do you think that the failure might be independent of LeadFree Material Properties?? Are your thoughts that the Reflow Temperature alone is causing an internal construction problem?? YiEngr, MA/NY DDave -------------------------------------------------------------------------------Leadfee Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Leadfree To temporarily stop delivery of Leadree for vacation breaks send: SET Leadfree NOMAIL Search previous postings at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 -------------------------------------------------------------------------------