With high ability to withstand the shock loading of large current, JST04 series triacs provide high dv/dt rate with strong resistance to electromagnetic interface. With high commutation performances, 3 quadrants products especially recommended for use on inductive load. From all three terminals to external heatsink, JST04A provides a rated insulation voltage of 2500 VRMS, and JST04F provides a rated insulation voltage of 2000 VRMS, complying with UL standards (File ref: E252906).