JOY,
We use a Dage Microtester outfitted with the appropriate " force arm" into
which we fit a small metal rod that had been flattened at one end to allow
it to fit in under a 1206, 0805 or 0603 to shear them off.  We have been
doing this for ten years with great success.  It can also be done using an
Instron or other large tensile tester, although the jig you may need to
build to hold the board or partial board might be more interesting.  Dage is
a British company and their equipment has generally been used for testing
wire bonds, using different force arms.  Their American office is in
California some where.  There is also an American company that makes a piece
of equipment called the Sebastian 5 that also does a good job.  I think they
are in either Oregon or Washington state.  I 'm doing this from home and I
don't have my files.

regards,
Bev Christian
Nortel
> ----------
> From:         Joy, Stephen C[SMTP:[log in to unmask]]
> Sent:         Thursday, May 28, 1998 3:52 PM
> To:   [log in to unmask]
> Subject:      [TN] Passive Shear tests
>
>      Does anyone have any experience with shear testing on 0603's;
>      0805's or BGA devices? What is the methodology?
>      Thanks in advance,
>      Steve Joy
>
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