The BZT52B5V1JS from Micro Commercial Components is a Zener Diode with Zener Voltage 5.0 to 5.20 V, Zener Current 1.00 mA, Voltage Forward 0.9 V, Current 5.0 mA, Current Reverse Reverse Leakage Current:- 2.0 uA. More details for BZT52B5V1JS can be seen below.