The BZX84C47 from Micro Commercial Components is a Zener Diode with Zener Voltage 44.65 to 49.35 V, Zener Current 5 mA, Voltage Forward 0.9 V, Current 1 mA, Current Reverse Reverse Leakage Current:- 0.1 µA. More details for BZX84C47 can be seen below.