An electrical device like this requires a reverse leakage current of 1μA @ 35.8V.While the device is operating, the maximum voltage - Zener (Nom) is reduced to 47V.
1PGSMB5941HR5G Features
reverse leakage current of 1μA @ 35.8V 1μA @ 35.8V is the maximum voltage (Tol)
1PGSMB5941HR5G Applications
There are a lot of Taiwan Semiconductor Corporation 1PGSMB5941HR5G applications of zener single diodes.