The BZT52B10JS from Micro Commercial Components is a Zener Diode with Zener Voltage 9.80 to 10.2 V, Zener Current 1.00 mA, Voltage Forward 0.9 V, Current 5.0 mA, Current Reverse Reverse Leakage Current:- 0.2 uA. More details for BZT52B10JS can be seen below.