The SMAJ54A with 87.1V 60V 54V SMA(DO-214AC) TVS ROHS is a transient voltage suppression device manufactured by Yageo. It is a device used to protect electronics from damage caused by voltage spikes, such as electrostatic discharge (ESD) and electrical transients. The device has a suppression voltage rating of 87.1V, a breakdown voltage of 54V, and a holding voltage of 60V. It is constructed in a DO-214AC Surface Mounted Device (SMD) package, and is RoHS compliant. It is designed to dissipate relatively low amounts of power, and is suitable for use in miniature consumer electronics.