The MMBZ5252C from Micro Commercial Components is a Zener Diode with Zener Voltage 23.52 to 24.48 V, Zener Current 5.2 to 0.25 mA, Voltage Forward 1.2 V, Current Reverse Leakage Current:- 0.1 uA, Power 300 mW. More details for MMBZ5252C can be seen below.