16.18 V dual common-anode zener array
The UMZ16NFHT106 is a dual zener diode array in a common-anode configuration, with a nominal zener voltage of 16.18 V and a power dissipation rating of 200 mW. It is qualified to AEC-Q101, the automotive discrete semiconductor stress-test standard, and rated for a junction temperature up to 150°C.
Leakage and impedance at the operating point
Reverse leakage is specified at 100 nA maximum when biased at 12 V — this is the standby current the clamping leg draws before the zener threshold is reached. Maximum zener impedance (Zzt) is 50 Ohms, which sets the dynamic resistance in the breakdown region and influences the voltage regulation accuracy under varying current.