The reverse leakage current for this electrical device should be 100nA @ 19V.5% indicates the maximum possible voltage (Tol) of 5%.This device should be operated at 5mA on the working test voltage.To function properly, this device needs a reverse voltage peak of 100nA.
MMSZ5253B-E3-18 Features
reverse leakage current of 100nA @ 19V 100nA @ 19V is the maximum voltage (Tol) the working test voltage to 5mA minimal dynamic impedance is 5mA
MMSZ5253B-E3-18 Applications
There are a lot of Vishay Semiconductor Diodes Division MMSZ5253B-E3-18 applications of zener single diodes.