Hi everyone, The upper management team here uses a DPU metric for our board shop, for what reason I am trying to comprehend. Basically, one solder joint defect on a board equates to the whole board counting as a defect. The opportunities are irrelevant - every board gets one opportunity. When the "PPM" numbers are published, which is what they call them, they are outrageously high. My questions are: Does anyone use Defects per Unit at the board level? If so, what kind of numbers are you seeing.? I am pursuing a change to use real DPMO metrics, but so far I've been unsuccessful. I even presented IPC-7912, but it was ignored. Thanks in advance for the help. Howard Watson SMT Manufacturing Engineer AMETEK/Dixson --------------------------------------------------- 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 847-509-9700 ext.5315 ----------------------------------------------------- Grand Junction, CO