Yup! Purchasing managers note: the cheapest is often the most expensive!
I've often told the story of the trimmer pots that were 5 c cheaper but
cost a buck more to assemble.

Brian

Charles Caswell wrote:

> I will be watching this one. A couple of years ago we had a job for several
> thousand little boards about 1.24" sq. The panels were supplied by the
> customer and many of the panels had 50% or more bad boards. I asked the
> customer why he was using a supplier with half bad product. The answer was
> "they are the cheapest we could find". Duh. Of course to actually assemble
> them cost more. But so what he gets bare boards cheap.
>
> -----Original Message-----
> From: Mark Larson [mailto:[log in to unmask]]
> Sent: Friday, March 12, 2004 9:13 AM
> To: [log in to unmask]
> Subject: [TN] Board panelization - bad boards
>
>
> Hi,
>
> When boards are delivered as a panel for assembly it is not necessary
> for all boards on the panel to be good, you don't want to scrap a panel
> because of a small number of bad boards on the panel. My guess is that
> if the panel contains 80% good boards you don't want to throw away the
> entire panel, yet if there is only 20% good, it may not be cost
> effective to send it through assembly (and you've probably lost faith in
> that fabricator's boards). So is there a point where the number of bad
> boards on the panel makes the entire panel scrap? How do you determine
> that?
>
> Mark Larson
> Sr. PCB Designer
> Analog Technologies Corporation
> 11441 Rupp Drive
> Burnsville, MN 55337
> 952-894-9228 voice
> 952-894-2966 fax
> [log in to unmask]
>
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