The SMCJ220CA with 356V 246V 220V SMC(DO-214AB)TVS ROHS manufactured by Yageo is a Transient Voltage Suppressor (TVS) diode designed to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events. It has a working voltage of 220V and a breakdown voltage of 246V, with a reverse stand-off voltage of 356V. The SMC(DO-214AB) package is a DO-214AB-type, small outline surface mount package, with 5-pin surface-mountable connections and RoHS certification, meaning that the manufacturer ensures that the product does not contain any hazardous substances that may damage the environment. Its fast response time helps protect systems from voltage transients from all common induced failures.