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October 2004

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Subject:
From:
Ryan Grant <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Wed, 13 Oct 2004 10:22:38 -0600
Content-Type:
text/plain
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Hi Technetters,

I'd like to solicit interpretations of J-STD-033A Handling, Packing,
Shipping and Use of Moisture Sensitive Devices.  In particular, I
mentioned to colleagues that simply resealing a moisture sensitive
device in its moisture barrier bag does not stop the clock for that
device.  They set me back in my place by pointing out that both sections
4.1.2.1 and 4.1.2.2 state the floor life can not only be stopped, but
also reset by "dry pack according to 3.3" and leaving the parts in
inventory for a sufficient length of time.  When I reference section
3.3, it covers sealing the parts in a Moisture Barrier Bag with
desiccant, but no reference to "drying".  Drying is covered in section
3.2!  How can I argue with that?!

In other words, if a level 5a part is left in the open for 8 hours
before resealing, after 3 1/2 days (10X the exposure time) of sitting
bagged in a warehouse, the part would be "dry" and the clock reset!
What a BONUS!  Otherwise, tape and reel parts might require up to 67
days of bake.

Although I can follow the lawyer speak, I don't see the logic.  Can
anyone straighten me out?

Thanks,
Ryan Grant

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