Sam, are you talking PWBs or PWAs?
Either way I would hope that there isn't any significant amount of
trapped moisture in the boards.  If boards are baked at 225F for 2-4
hours before being vacuum sealed, there should'nt be any problems with
moisture.  I would add a bag of dessicant and a humidity card to the
packaging just for good measure.

David N. Girard, CQE, NCE
Product Assurance Engineer
Group Technologies Corporation
(813) 972-6471

> ----------
> From:         sam mccorkel[SMTP:[log in to unmask]]
> Sent:         Friday, October 31, 1997 12:15
> To:   [log in to unmask]
> Subject:      [TN] Fab: Packaging
>
>         We have a customer that wants us to begin using vaccuum sealed
> wrapping to ship their boards in. They want to reduce moisture
> absorbtion in
> the board.
>
>         It's been awhile, but I remember reading that this is a
> "No-No". I
> don't remember WHY but I think it had to do with trapped moisture.
>
>         Could anyone let me know if this is or isn't recommended and
> also why?
>
>         Thanks for your input!
>
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