The reverse leakage current for this electrical device should be 50nA @ 21V.5% indicates the maximum possible voltage (Tol) of 5%.While operating, the maximum voltage - Zener (Nom) is reduced to 30VV.For its operation, maximum voltage - Forward (Vf) 1.1V @ 100mA is provided.
BZX384-C30,115 Features
reverse leakage current of 50nA @ 21V 50nA @ 21V is the maximum voltage (Tol)
BZX384-C30,115 Applications
There are a lot of Nexperia USA Inc. BZX384-C30,115 applications of zener single diodes.