The MMBZ5241C from Micro Commercial Components is a Zener Diode with Zener Voltage 10.78 to 11.22 V, Zener Current 20 to 0.25 mA, Voltage Forward 1.2 V, Current Reverse Leakage Current:- 2 uA, Power 300 mW. More details for MMBZ5241C can be seen below.