Solutions.The SMBJ28A with 45.4V 31.1V 28V SMB(DO-214AA) TVS ROHS is an unidirectional, bidirectional or dual common mode transient voltage suppression (TVS) device manufactured by SMC Diode Solutions. It is designed to protect against extreme voltage transients, which is commonly used in communication and data storage applications. This device offers protection from high energy ESD events, surges and electrical moments caused by induced lightning transients. It has a unidirectional protection of 45.4V, a bidirectional protection of 31.1V and a dual common mode protection of 28V, and comes in a DO-214AA package. It is RoHS compliant and meets the IEC 61000-4-2, IEC 61000-4-5, and IEC 61000-4-4 and military standards.