An electrical device like this requires a reverse leakage current of 5μA @ 9.9V.While the device is operating, the maximum voltage - Zener (Nom) is reduced to 13V.For operation, diode reaches 1.2V @ 200mA at the maximum voltage - Forward (Vf).
SMAJ4743CE3/TR13 Features
reverse leakage current of 5μA @ 9.9V 5μA @ 9.9V is the maximum voltage (Tol)
SMAJ4743CE3/TR13 Applications
There are a lot of Microsemi Corporation SMAJ4743CE3/TR13 applications of zener single diodes.