Hello TechNetistes & other Earthlings.

I'll leave it to others with a deeper knowledge than I of CSAM / SAT
test methodology to respond directly to Glenn's query.

However, I would just like to highlight that the referenced document
J-STD-020A is a quite extensive revision of the J-STD-020 released
back in October 1996.

One significant change is that the preferred method of solder reflow
is now 100% Convection reflow, rather than VPR (formerly preferred)
or Infrared (IR)/Convection.

Another is the Classifiaction/Reclassification of Surface Mount
packages by package type & size, in terms of Package Reflow conditions.

The update was only posted on JEDEC website this April, so be warned
if you have been using this standard for some time & were not aware
of the update!  It's definitely worth a close read.

Keep up the heat . . . Norm.
--
Thx & best regards . . .
------------------------------------------------------------------------
Norman S. Robinson      Tel. No.: (44) 1355 355349
Snr. Assy. Engr.        Fax. No.: (44) 13552 65201
TSG BE/OS PE            Email: [log in to unmask]
MOTOROLA EKB, SCOTLAND, U.K.
------------------------------------------------------------------------

glenn pelkey wrote:

> ,
>         glenn pelkey <[log in to unmask]>To: [log in to unmask]
> Apparently-To: "Norman_Robinson-TENG52@email" <[log in to unmask]>
> Mime-Version: 1.0
> Content-type: text/plain
> Message-ID:  <[log in to unmask]>
>
> Hello friends,
>
> I'm reading J-Std-20 on moisture sensitivity of plastic packages that I
> got off the Jedec web site.  In it is a reference to IPC-TM-650, Method
> 2.6.22, "Acoustic Microscopy."  However, I can't find that particular
> test method in our manual or on the IPC web site.
>
> Does anyone know the status of that test method?  And, as a follow-up,
> does anyone know of other standards (military, IEC, etc) that address
> Acoustic Microscopy (in some situations, known as "Sonoscan" or "CSAM")?
>
> Thanks for your help.
>
> Glenn Pelkey
> Maxtek Components Corp.
> [log in to unmask]
> [log in to unmask]
> Get Your Private, Free Email at http://www.hotmail.com
>
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