While the device is operating, the maximum voltage - Zener (Nom) is reduced to 3.3V.For operation, diode reaches 1.5V @ 200mA at the maximum voltage - Forward (Vf).
TLZ3V3-GS18 Features
TLZ3V3-GS18 Applications
There are a lot of Vishay Semiconductor Diodes Division TLZ3V3-GS18 applications of zener single diodes.