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]
		
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