Somebody mixed up some reels, and we got some 0.1uF 16v 0805 ceramic caps in a bin that was supposed to be 50 volt parts.
So, I figured it would be fun to find out what voltage they actually blow up at. I connected 4 in parallel, to a Kepco 3KV power supply.
What I got, scaled per cap, was
400v 5 uA/cap leakage450 7.5
500 15540 25
600 50650 75
700 125800 200
830 died, about 3 ohmsThe current measurements are rough, because at each step the current is creeping down, some sort of DA or something. I let the 700 volt point soak a few minutes, and the current droped almost in half from the value shown.
I won the pool. The Brat bet they would fail at 1500, and Rob bet they would stand the full 3KV. Amateurs.
It would be interesting to measure C vs V. Some other time, maybe.
John