Following a topic here a while back, I have several 1 and 10u tantalum
capicitors on boards where the PIC switches a couple of relays. The 5v
relays are switching 12v,and a cap on the 12volt line has just fried. It was
rated at 16 volts.

I thought this was a defective component, but another one has just gone...

I'll be uprating them in future, but surely a 16v cap should be satisfactory
on a 12v line?

Stuart Meier