The SMBJ5.0A with SMB(DO-214AA) TVS ROHS is a device manufactured by the Taiwan Great Magnet Co. (TWGMC). It is a Transient Voltage Suppressor, and is designed for surface mount applications such as circuit protection against over-voltage transients. It has a peak power dissipation of 600 Watts, and is rated at 5.0 Amps of continuous current. The device is RoHS compliant, and is designed to meet UL, CSA, and TUV flammability requirements. It also features an instantaneous response time, and low peak surge current absorption.