The reverse leakage current for this electrical device should be 1μA @ 180V.While operating, the maximum voltage - Zener (Nom) is reduced to 240VV.For its operation, maximum voltage - Forward (Vf) 1.2V @ 500mA is provided.
BZG03B240-HM3-18 Features
reverse leakage current of 1μA @ 180V 1μA @ 180V is the maximum voltage (Tol)
BZG03B240-HM3-18 Applications
There are a lot of Vishay Semiconductor Diodes Division BZG03B240-HM3-18 applications of zener single diodes.