An electrical device like this requires a reverse leakage current of 3μA @ 6V.While the device is operating, the maximum voltage - Zener (Nom) is reduced to 7.5V.For operation, diode reaches 1.5V @ 200mA at the maximum voltage - Forward (Vf).
ZMM5236B-7 Features
reverse leakage current of 3μA @ 6V 3μA @ 6V is the maximum voltage (Tol)
ZMM5236B-7 Applications
There are a lot of Vishay Semiconductor Diodes Division ZMM5236B-7 applications of zener single diodes.