An electrical device such as this requires reverse leakage current of 5μA @ 91.2V.During operation, the maximum voltage - Zener (Nom) is reduced to 120V volts.
1M120Z A0G Features
reverse leakage current of 5μA @ 91.2V 5μA @ 91.2V is the maximum voltage (Tol)
1M120Z A0G Applications
There are a lot of Taiwan Semiconductor Corporation 1M120Z A0G applications of zener single diodes.