Jon,
Then I would be curious to know if your friend includes total defects
found at all those stations when compiling the DPMO:
1-Visual Inspection
2-X-Ray inspection 
3-ICT/ Flying Probe

The frequency or time period to which they measure themselves is also
key (weekly DPMO, bi-weekly or one month period).

A DPMO of 10-15 is achievable at only ICT/FP (taking into account enough
test coverage) but including all stations listed above, this is amazing.
They certainly have a well trained and experienced workforce to achieve
this. This corresponds to 4.3 Sigma or 8.5 ppm (defective part per
million)!!! We're at 3.9 Sigma and I consider it very good. Our
corporation wants 4.5 though.

Regards,
Eric 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of [log in to unmask]
Sent: 30 octobre 2007 14:47
To: [log in to unmask]
Subject: Re: [TN] World class DPMO


 
 
In a message dated 10/30/2007 11:45:38 AM Eastern Daylight Time,
[log in to unmask] writes:

I don't  think they are counting everything.  



I can assure that they are and they are quite thorough about  it.  I
have been hired in the past as an auditor of their process and  quality
documentation, as well as a trainer for certain functions in their
organization.  The numbers are quite real, not padded, nothing omitted,
possibly even conservative in certain areas.
 
Jon Moore



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