The MMSZ4682 from Micro Commercial Components is a Zener Diode with Zener Voltage 2.7 to 2.835 V, Zener Current 50 mA(zener test current), Voltage Forward 0.95 V, Current Reverse Leakage Current:- 1 uA, Power 500 mW. More details for MMSZ4682 can be seen below.