Several choices.  Mil Std 105  Level III AQL.  This is a critical sample vs
Level II which is considered a std sample.    Depending on what your
customer is looking for, you may have to do 100% insp..  Also, if you have
done testing what is your failure rate ??  This may answer your question.

If you do AQL a representative Test Report would be required.

Our board house is required to do 100% test.

Do you do testing now ?? and if so what is your dropout rate ??  (if I may
be so bold to ask)

Randy Bock Sr.
Quality Manager
Bryce Office Systems.

----- Original Message -----
From: Kathy Bergman <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, July 03, 2002 2:42 PM
Subject: [TN] TDR test reports


> Hello and Happy Independence Day (almost):
>
> We manufacture PCB's. We are just beginning to do TDR testing in house.
> Is there anything in the IPC standards that I can use as a guide in
> determining what percentage of a lot is a representative sample of the
> results? Would you, as customers, require to see a 100% verification (a
> value for each board), or would you be comfortable with a representative
> lot report. I am writing a work instruction, and TDR Certificate for the
> process.
>
> Your help is appreciated.
> K. Bergman
> Quality Manager
> ICPC Etched Circuits
>
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