What are voltage ratings for the capacitors inside the common off the shelf ac snubber networks, such as 0.1uF + 100 Ohm ?
It would seem that larger inductive loads can easily drive the capacitor voltage into the kilovolts. Is it ok because it only lasts a short time?
I am more interested in the real world practices than in theory. I don't know how many people in the field actually try to find or measure the load inductance and current to calculate the capacitor voltage before grabbing a snubber and wiring it in. Or is it common practice?
It is not obvious from datasheets what actual voltage ratings are on the capacitors inside those snubber networks. It is only stated for the networks themselves. And I have not taken one apart.
This applies as well to the numerous snubber examples on the web. Almost none mention capacitor voltage, only capacitance.