The 642907-MMSZ5260B is a single Zener diode from DIOTEC Electronics Corporation. It is a surface mount component with a package type of SOD-123F. The Zener diode has a power rating of 500mW and a voltage rating of 43V. It has a tolerance of ±5% and an impedance of 93 Ohms. The maximum forward voltage drop at 10mA is 900mV. The maximum reverse leakage current at 33V is 100nA. The operating temperature range is -50°C to 150°C. This Zener diode is commonly used in voltage regulation and voltage reference circuits. Its small package size and high reliability make it suitable for various electronic devices.