Absorption current vs. charge voltage for industrial quality capacitors

Absorption current as a function of charge voltage has been measured on a population of industrial quality capacitors with the finding that above some charge voltage the absorption current starts to increase rapidly. Based on the nature of the measured absorption current vs. voltage, a mathematical procedure has been developed which provides a systematic method for defining this threshold voltage varies widely over the population. Possible reasons for this variation are discussed based on extensive dissection of capacitors and detailed knowledge of the production process.