DB3 28V, 36V 2-Pin :

The DB3 is a commonly used DIAC (DIode for Alternating Current) device designed for triggering applications, such as in light dimmers, motor speed controllers, and other AC control circuits. It provides a sharp switching action at a specified breakdown voltage and is typically used in phase control and switching applications. It has a breakdown voltage range of 28V to 36V and is housed in a 2-pin DO-35 package.