Another source for information regarding cracked capacitors is through the
Surface Mount Technology Association Academy.  I attended a very excellent
seminar given by John Maxwell entitled: "Surface Mount Problem Solving:
Design and Production" where a great deal of time was spent on ceramic chip
cracking.  

Two items mentioned which may get you started are (A) most failures of this
type occur at the de-paneling stage and (B) the positioning of the crack on
the chip may point to the failure mechanism.

I surely hope that at least the s.m.t.a. reference source may assist you.

Happy Holidays!

Tom Eshelman, Enthone-OMI
1.800.548.9801 ext. 7257
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