An electrical device like this requires a reverse leakage current of 5μA @ 42.6V.A maximum voltage (Tol) can be supplied if 10% is set.While the device is operating, the maximum voltage - Zener (Nom) is reduced to 56V.For operation, diode reaches 1.1V @ 200mA at the maximum voltage - Forward (Vf).
1N979A Features
reverse leakage current of 5μA @ 42.6V 5μA @ 42.6V is the maximum voltage (Tol)
1N979A Applications
There are a lot of Microsemi Corporation 1N979A applications of zener single diodes.