The MM3Z4V3CW is a SOD-323 Zener diode with a maximum continuous reverse voltage of 3.4 volts, or VZ, and a maximum power dissipation of 500 milliwatts, or PD. It is manufactured by the company Formosa and is RoHS compliant. It features very low reverse leakage current and low noise operation, making it a suitable choice for applications that require high-precision voltage regulation. It has a maximum forward voltage, or VF, of 1.2 volts and a maximum reverse current, or IR, of 100 micro amps at its rated VZ. Additionally, the MM3Z4V3CW is rated for a temperature range of -55 to +150 degrees Celsius and can withstand a maximum surge power of 2 Watts.