The MMBZ5246C from Micro Commercial Components is a Zener Diode with Zener Voltage 15.68 to 16.32 V, Zener Current 7.8 to 0.25 mA, Voltage Forward 1.2 V, Current Reverse Leakage Current:- 0.1 uA, Power 300 mW. More details for MMBZ5246C can be seen below.