Bob:
        The term used in some companies is DPMO or defects per million
opportunities. There was a thread a few weeks ago on this subject. There
were several suggestions about it.. Suggest to look on the archives.
        Regard,
        Ramon

> -----Original Message-----
> From: bob wettermann [SMTP:[log in to unmask]]
> Sent: Wednesday, October 22, 2003 8:11 PM
> To:   [log in to unmask]
> Subject:      [TN] Board Shop Outgoing QC Measurement Suggestions
>
> What is the the most common practice for measuring the outgoing QC levels
> of a PCB fabrication facility? Are ppm defect rates used? If so how are
> they practically measured-by the number of solder joints, the number of
> operations performed per board or...?
>
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>
> BWET
>
>
> Bob Wettermann
> PH 847-767-5745

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