Fairchild Semiconductor MMSZ5229B_Q Configuration: Single Maximum Operating Temperature: + 150 C Maximum Reverse Leakage Current: 5 uA Maximum Zener Impedance: 22 Ohms Minimum Operating Temperature: - 55 C Mounting Style: SMD/SMT Package / Case: SOD-123 Power Dissipation: 500 mW Voltage Tolerance: 5 % Zener Current: 20 mA Zener Voltage: 4.3 V