An electrical device like this requires a reverse leakage current of 5μA @ 2.5V.While the device is operating, the maximum voltage - Zener (Nom) is reduced to 5.6V.For operation, diode reaches 1.4V @ 1A at the maximum voltage - Forward (Vf).
JAN1N6318D Features
reverse leakage current of 5μA @ 2.5V 5μA @ 2.5V is the maximum voltage (Tol)
JAN1N6318D Applications
There are a lot of Microsemi Corporation JAN1N6318D applications of zener single diodes.