The reverse leakage current for this electrical device is 100nA @ 21V.In the course of operation, Zener (Nom) drops to zero voltage.This value reaches 1.1V @ 200mA when the maximum Forward voltage (Vf) is applied.
1N5254B-T Features
reverse leakage current of 100nA @ 21V 100nA @ 21V is the maximum voltage (Tol)
1N5254B-T Applications
There are a lot of Vishay Semiconductor Diodes Division 1N5254B-T applications of zener single diodes.