Zener single diode is a maximum voltage (Tol) that can be supplied at 3.95%.As part of the operation, the maximum voltage - Zener (Nom) is reduced to 2.4V.Setting the working test voltage to 5mA will allow this device to operate.
UDZVTE-172.4B Features
the working test voltage to 5mA minimal dynamic impedance is 5mA
UDZVTE-172.4B Applications
There are a lot of ROHM Semiconductor UDZVTE-172.4B applications of zener single diodes.