An electrical device such as this requires reverse leakage current of 5μA @ 18.2V.During operation, the maximum voltage - Zener (Nom) is reduced to 24V volts.
SMZJ3798B81HE3/5B Features
reverse leakage current of 5μA @ 18.2V 5μA @ 18.2V is the maximum voltage (Tol)
SMZJ3798B81HE3/5B Applications
There are a lot of Vishay Semiconductor Diodes Division SMZJ3798B81HE3/5B applications of zener single diodes.