The MMBZ5244C from Micro Commercial Components is a Zener Diode with Zener Voltage 13.72 to 14.28 V, Zener Current 9 to 0.25 mA, Voltage Forward 1.2 V, Current Reverse Leakage Current:- 0.1 uA, Power 300 mW. More details for MMBZ5244C can be seen below.