I've completed a R&D program utilizing ceramic BGAs last year. I was able to purchase dummy components which were daisy chained internally from IBM. Package sizes ranges from 256 to 1089. You can try: Bob Titone (IBM) at (914) 892-5325 Jim Marsico (516) 595-5879 [log in to unmask] ******************************** * ______ _ _ _____ * * / ___ | | | | | _____ * * / /___| | | | | | _____ * * __/ ____ | | | | |______ * * |____/ |_| |_| |________| * * * * SYSTEMS, INC. * ********************************