A full performance of 139mOhm requires the ESR (Equivalent Series Resistance).The capacitor operates from 400V DC voltage.There is no voltage rating on this capacitor.
ALS31A102KE400 Features
voltage - Rated DC of 400V
ALS31A102KE400 Applications
There are a lot of KEMET ALS31A102KE400 applications of aluminum electrolytic capacitors.