An electrical device like this requires a reverse leakage current of 120μA @ 700mV.While the device is operating, the maximum voltage - Zener (Nom) is reduced to 2.2V.
GDZ2V2B-HG3-18 Features
reverse leakage current of 120μA @ 700mV 120μA @ 700mV is the maximum voltage (Tol)
GDZ2V2B-HG3-18 Applications
There are a lot of Vishay Semiconductor Diodes Division GDZ2V2B-HG3-18 applications of zener single diodes.