Hey...That's the same question I asked our materials and production groups
when they complained I was increasing their work by insisting that
information must be retained if all parts are not immediately and fully
consumed during production. (I never have received an answer, but I do get
asked occasionally what moisture level the parts are after the original
information is lost. I can only hang my head and cry.)
Rick,
Jack's comments are exactly on. The J-STD-033 addresses your very
issue (section 6.3.2.1). I don't think I've seen a non-moisture barrier bag
that has the proper water vapor transmission rate, but if there is one,
that's the primary thing that matters.
Thanks
Ryan Grant
Advanced Technology Engineer
MCMS
(208) 898-1145
[log in to unmask]
> -----Original Message-----
> From: Campbell, William (wcampbel) [SMTP:[log in to unmask]]
> Sent: Friday, December 08, 2000 6:16 AM
> To: [log in to unmask]
> Subject: Re: [TN] Re-sealing Moisture Sensitive Components
>
> Why not keep the original bag, with vendor info, date codes, etc.? A
> little
> care in opening and a heat sealer can go a long way.
>
> -----Original Message-----
> From: Rick Thompson [mailto:[log in to unmask]]
> Sent: Thursday, December 07, 2000 5:21 PM
> To: [log in to unmask]
> Subject: [TN] Re-sealing Moisture Sensitive Components
>
>
> I need some opinions on re-sealing moisture sensitive components. Like
> many
> places, we have a procedure covering the handling of moisture sensitive
> devices. It includes provisions for re-sealing opened bags of components
> with dessicant, etc. Recently our manufacturing manager has been allowing
> the use of the metalized anti-static bags used for PCBA packaging to be
> used
> to seal components instead of the heavier metalized bags the components
> originally come in. I don't believe this is sufficient protection, but
> I'd
> like opinions either way. Am I over reacting or should we not allow this
> type of bag for re-sealing devices?
>
> Thanks in advance,
>
>
> Rick Thompson
> Ventura Electronics Assembly
> 2665A Park Center Dr.
> Simi Valley, CA 93065
>
> +1 (805) 584-9858 voice
> +1 (805) 584-1529 fax
> [log in to unmask]
>
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