The MMBZ5257C from Micro Commercial Components is a Zener Diode with Zener Voltage 32.34 to 33.66 V, Zener Current 3.8 to 0.25 mA, Voltage Forward 1.2 V, Current Reverse Leakage Current:- 0.1 uA, Power 300 mW. More details for MMBZ5257C can be seen below.