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March 2000

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Subject:
From:
"Tempea, Ioan" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 24 Mar 2000 13:48:40 -0500
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Wade,

the definition of moisture sensisivity and the levels are in J-STD-020A. You
can download it for free at the JEDEC website,
http://www.jedec.org/DOWNLOAD/default_joint.htm.

As for associated levels to each component, you must have it indicated on
the bag in which the components come from the manufacturer, not in the data
sheet. Be careful, most ICs and not only are moisture sensitive, regardless
of the package, SOs, PLCCs, QFPs, etc.

So, if you want to elucidate the status of your components you have to see
the original bag, the one that comes at the incoming inspection. After that,
it is possible that the stockroom personnel remove the bags in order to make
the components fit in the locations. Let's call it innocence.

Regards,
Ioan

> -----Original Message-----
> From: Oberle, Wade [SMTP:[log in to unmask]]
> Sent: Friday, March 24, 2000 12:18 PM
> To:   [log in to unmask]
> Subject:      [TN] moisture sensitive components
>
> Dear Technetters,
>         How do you define or classify moisture sensitive components?  I
> always think of plastic BGAs as being an example of moisture sensitive
> parts
> but that is based on word of mouth.  I have never read that in a
> 'Component
> data sheet'.  Please point me in the right direction as to where to find a
> list of particular package types or part numbers that are 'moisture
> sensitive'.
>
> Thanks in advance.
>
> Wade Oberle
>
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