The BZM55C3V0 from Micro Commercial Components is a Zener Diode with Zener Voltage 2.8 to 3.2 V, Zener Current 1.0 mA, Voltage Forward 1.5 V, Current 5.0 mA, Current Reverse Reverse Leakage Current:- 4 - 40 uA. More details for BZM55C3V0 can be seen below.