The SMBJ12A is a surface-mount Transient Voltage Suppressor (TVS) diode manufactured by JSCJ (JCET). Designed to protect sensitive electronic equipment from voltage transients induced by lightning, inductive load switching, and electrostatic discharge (ESD), this diode offers a clamping voltage of 19.9V at a test current of 1A. It features a reverse standoff voltage of 12V and a peak pulse power dissipation of 600W. The SMBJ12A is ideal for applications requiring robust overvoltage protection in a compact form factor. Supreme Components International is an authorized distributor of JSCJ (JCET) components. This TVS diode is commonly used in telecommunications, industrial control, and consumer electronics applications.