The BZM55C2V7 from Micro Commercial Components is a Zener Diode with Zener Voltage 2.5 to 2.9 V, Zener Current 1.0 mA, Voltage Forward 1.5 V, Current 5.0 mA, Current Reverse Reverse Leakage Current:- 10 - 50 uA. More details for BZM55C2V7 can be seen below.