An electrical device like this requires a reverse leakage current of 5μA @ 22.8V.While the device is operating, the maximum voltage - Zener (Nom) is reduced to 30V.
1N4751AHB0G Features
reverse leakage current of 5μA @ 22.8V 5μA @ 22.8V is the maximum voltage (Tol)
1N4751AHB0G Applications
There are a lot of Taiwan Semiconductor Corporation 1N4751AHB0G applications of zener single diodes.