An electrical device like this requires a reverse leakage current of 1μA @ 9.1V.While the device is operating, the maximum voltage - Zener (Nom) is reduced to 12V.For operation, diode reaches 1.2V @ 200mA at the maximum voltage - Forward (Vf).
1N5927BE3/TR13 Features
reverse leakage current of 1μA @ 9.1V 1μA @ 9.1V is the maximum voltage (Tol)
1N5927BE3/TR13 Applications
There are a lot of Microsemi Corporation 1N5927BE3/TR13 applications of zener single diodes.