The SEMIWARE SMBJ40A is a unidirectional Transient Voltage Suppressor (TVS) designed to protect electronic components and circuits from high-voltage transients. It has a breakover voltage of 64.5V and peaks at 44.4V and 40V when subjected to a surge with a short duration. The DO-214AA package, also known as SMB, provides ease of installation in a wide range of applications, while being RoHS compliant.