Vijay,
To add to others' comments, assuring reliability of SM attachment or other
features can have a significant cost. Of course, not doing it can be more
costly down the road.
Some organizations also found that reliability can give them an edge and thus
do not wish to share their data, models or other best practices. 
The opposite can also happen. E.g., Motorola was very open in presenting the
results of their BGA reliability studies. In that case, industry's acceptance
of the technology was a strongly motivating factor (in my opinion).

Jean-Paul
________________________________________________________________
Jean-Paul Clech
EPSI Inc., P. O. Box 1522, Montclair, NJ 07042 - USA
tel: +1 (201)746-3796  fax: + 1 (201)655-0815
Home page: <A HREF="http://members.aol.com/Epsiinc1/index.html">http://members
.aol.com/Epsiinc1/index.html</A>
- click on the above or copy: http://members.aol.com/Epsiinc1/index.html
__________________________________________________________________



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