The BZT52C2V4T from Micro Commercial Components is a Zener Diode with Zener Voltage 2.28 to 2.56 V, Zener Current 1 mA, Voltage Forward 0.9 V, Current 5 mA, Current Reverse Reverse Leakage Current:- 50 uA. More details for BZT52C2V4T can be seen below.