An electrical device like this requires a reverse leakage current of 50nA @ 21.2V.While the device is operating, the maximum voltage - Zener (Nom) is reduced to 28V.For operation, diode reaches 900mV @ 10mA at the maximum voltage - Forward (Vf).
DDZ9712Q-7 Features
reverse leakage current of 50nA @ 21.2V 50nA @ 21.2V is the maximum voltage (Tol)
DDZ9712Q-7 Applications
There are a lot of Diodes Incorporated DDZ9712Q-7 applications of zener single diodes.