I'm looking through digikey's option on polypropylene capacitors.
None of them seem to specify dielectric absorption.
This is for a low voltage sample-hold circuit. Low leakage is good, but low dielectric absorption is more important. I cannot seem to figure out the difference between PP, Metalized PP, and Stacked PP capacitors.
I'm seeking advice for specific capacitors or a way to decipher the datasheet. For instance, does the voltage rating tend to matter? Does lower leakage/higher insulation resistance tend to mean a better dielectric absorption specification?