The SMBJ51A with TVS SMB (DO-214AA) RoHS manufactured by Yageo is a high performance transil, or rapid surge stopper, used to protect sensitive components in a circuit. It is an unidirectional transient voltage suppressor (TVS) in a standard SMB size (DO-214AA) RoHS compliant package. It is used to provide transient ESD protection with its 1500W peak pulse power rating. It provides fast and reliable protection against transient voltage spikes up to 5.5V. It has an operating temperature range of -55°C to +150°C, and a fast response time of 10ns. The SMBJ51A is suitable for automatic soldering and can be used in a variety of applications, including board-to-board interconnects, connector adds, and bus switching.