I can only tell you of my experience in a former job. I inherited a SMT line
that was out of control. Loss averaged 15 percent. But over a large range,
from over 50 percent to a low of about 5 percent. By the time we got the
line under control loss averaged between 3 and 5 percent. It might be
possible to do better. We worked with lot sizes similar to those you use.

> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]]On Behalf Of Dave Snyder
> Sent: Wednesday, January 02, 2002 2:43 PM
> To: [log in to unmask]
> Subject: [TN] SMT Component Loss Percentages
>
>
> What is the expected part loss in the pick and place process? I assume the
> percentages are different depending on the type of part and size. It's
> probably is much better if the lots are very large, however we manufacture
> board assemblies in small lots (50-200). Is there an IPC document
> that lists
> "normal" levels or guidelines? Any help would be greatly appreciated, even
> wild guesses.
>
> Thanks
> Dave Snyder
> Manufacturing Engineering Manager
>
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