Good Morning, 
Is the non-soldered termination slightly lifted?  0402's in my experience have a tendenancy to lift if the pad layout isn't right.
Have you performed any solderability tests of the suspect parts to determine solderability? 

Hope it helps.

Kathy  

>>> [log in to unmask] 02/19/01 10:00PM >>>

Hello,
 
Does anyone have solderability issues with 0402 capacitors? We adjusted our reflow profiles a few times according to different manufacturers but so far have not completely resolved the problem. What we noticed was no-soldered of terminal(s) at random locations, and didn't appear to be manufacturer specific.
 
Any suggestion on how to approach this?
 
Regards.
 
Peter