The BZS55C4V7 RXG is a small signal Zener diode manufactured by Taiwan Semiconductor, with Zener diodes 1206 (ceramics), 500mW, 5%, Small Signal Zener Diode. The diode has a nominal maximum reverse power dissipation of 500mW, with a maximum voltage of 4.7V and a maximum reverse current of 5mA. The device is a SOD-323 package and has a 0.5mA maximum Zener current. The diodes are primarily used for voltage regulation, stabilizing, and temperature compensation in various circuits.