Henry,

1.  We're an OEM supplier.

2.  The majority of our workmanship standards fall between class 2 and class
3 (with class 3 standards or tighter for the components most critical to the
function of the unit).

3.  Although I wish we were, we aren't presently using DPMO calculations.
We track first pass yield (multiple defects on the same board equals one
reject).

4.  Control limits are set at 2.5% for SMT and 3% for THT processing.

Hope this helps,

Leland Woodall
Quality Coordinator
Keihin Carolina System Technology, Inc.

-----Original Message-----
From: Henry Rekers [mailto:[log in to unmask]]
Sent: Tuesday, April 29, 2003 4:46 PM
To: [log in to unmask]
Subject: [TN] Defect rates.


I'm assuming that the members here on the IPC technet use IPC 610 to
classify and rate their smt and through-hole defects.

I just wanted to submit a quick query to find out a general "state of the
industry" to the following questions:

1.  Are you an OEM or contractor or other?

2.  Do you consider class 1, 2 or 3 defects (in IPC 610)?

3.  Do you track defect rates in terms of DPMO?

4.  What is your control limit for DPMO?  <100?  <50?

Thanks.

Henry J. Rekers

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