The BZX84C4V3 manufactured by Formosa is a SOT-23-3 RoHS compliant Zener diode. It is a low-power, low-voltage, planar Zener diode with a breakdown voltage (V(BR)ZSM) of 4.3V, a maximum power dissipation (PD) of 500mW and with a maximum reverse current of 1µA. It can operate in an ambient temperature range between -55°C up to +175°C and has a flat Leaded plastic package with a maximum width of 3.1mm and a maximum height of 0.9mm. Furthermore, it is available in single or multiple units, which allows for easy assembly and mounting.