An electrical device like this requires a reverse leakage current of 5μA @ 38.8V.During reverse leakage, the maximum current reaches 5μA.For operation, diode reaches 1.2V @ 200mA at the maximum voltage - Forward (Vf).
SMBJ4757/TR13 Features
reverse leakage current of 5μA @ 38.8V 5μA @ 38.8V is the maximum voltage (Tol) Reverse leakage current reaches 5μA
SMBJ4757/TR13 Applications
There are a lot of Microsemi Corporation SMBJ4757/TR13 applications of zener single diodes.