An electrical device such as this requires reverse leakage current of 15μA @ 1V.During operation, the maximum voltage - Zener (Nom) is reduced to 3.6V volts.As soon as the maximum voltage - Forward (Vf) is supplied, it reaches 1.2V @ 200mA V.
1N5989B_T50A Features
reverse leakage current of 15μA @ 1V 15μA @ 1V is the maximum voltage (Tol)
1N5989B_T50A Applications
There are a lot of ON Semiconductor 1N5989B_T50A applications of zener single diodes.