An electrical device like this requires a reverse leakage current of 2μA @ 3.5V.While the device is operating, the maximum voltage - Zener (Nom) is reduced to 6.66V.
MTZJ6V8SB R0G Features
reverse leakage current of 2μA @ 3.5V 2μA @ 3.5V is the maximum voltage (Tol)
MTZJ6V8SB R0G Applications
There are a lot of Taiwan Semiconductor Corporation MTZJ6V8SB R0G applications of zener single diodes.