The MMBZ5233C from Micro Commercial Components is a Zener Diode with Zener Voltage 5.88 to 6.12 V, Zener Current 20 to 0.25 mA, Voltage Forward 1.2 V, Current Reverse Leakage Current:- 5 uA, Power 300 mW. More details for MMBZ5233C can be seen below.