SMBJ18CAJ by WeEn Semiconductors is a esd protection diodes / tvs diodes designed for reliable performance in electronic applications. It is widely used in industrial, automotive, and power management systems.

Circuit protection devices include products used to protect electrical circuits from damage caused by hazards such as static discharge (such as Transient Voltage Suppression diodes and gas discharge tubes) as well as products designed to reduce the risk of fire caused by electrical overload or circuit failure, such as fuses and circuit breakers. Related accessories designed for use with such products are also included, such as fuse holders, fuse pullers, and mounting bases for circuit breakers.