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 free 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