The most method of ball formation is screen printing of paste and reflow that is
how I make the SMART Group dummy packages used on our surface mount workshops
and demonstrations lines. It is easy cheap and works very well it does not give
the same ball volume. One German company uses the technique for making their own
packages used in products like professional telecommunications.

A alternative method would be liquid paste dispensing or liquid solder jetting.

Bob Willis
Electronic Presentation Services
2 Fourth Avenue, Chelmsford, Essex CM1 4HA. England.
Tel: (44) 01245 351502
Fax: (44) 01245 496123
Home Page: http://ourworld.compuserve.com/homepages/bwillis
Email: [log in to unmask]


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