Howard:
        Ask them to first put them in a plastic bag to isolate them from the
beads, another few extra cents. Or, you can wash them prior to being baked
for assembly.
        Regards,
        Ramon

> -----Original Message-----
> From: Howard Watson [SMTP:[log in to unmask]]
> Sent: Friday, February 21, 2003 9:48 AM
> To:   [log in to unmask]
> Subject:      [TN] Styrofoam beads on PCB's
>
>
> Dear Technetters,
>
> I don't know if this is a problem that only we have, but it involves
> Styrofoam packing beads that show up on the PCB's that are delivered to
> our lines.  The little beads are all over the plastic packaging of the
> individual PCB bundles, and these can eventually hitchhike onto a PCB that
> goes into the printer.  You can guess what happens - a bead ends up on a
> pad or in an aperture and the result is insufficient or missing solder on
> one or many boards.  Our supplier is in China or India, and they claim
> that they must use Styrofoam for packaging.  In my opinion, this is the
> wrong type of packaging to use, but because of the low "initial" cost, I
> don't have too much clout on this issue.  Is anyone else familiar with
> this problem?
>
> Thanks in advance for all of your opinions - they are helpful and very
> valuable to my job!
>
> Howard Watson
> SMT Manufacturing Engineer
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> AMETEK/Dixson

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