An electrical device such as this requires reverse leakage current of 5μA @ 152V.During operation, the maximum voltage - Zener (Nom) is reduced to 200V volts.
1M200Z B0G Features
reverse leakage current of 5μA @ 152V 5μA @ 152V is the maximum voltage (Tol)
1M200Z B0G Applications
There are a lot of Taiwan Semiconductor Corporation 1M200Z B0G applications of zener single diodes.