The Z0405MF 1AA2 is a TRIACs 4.0 Amp 600 Volt manufactured by STMicroelectronics. It is a sensitive gate four quadrant analog switch, meaning it can switch either AC or DC without disturbing the Load. It has blocking voltages ranging up to 600 Volts and Vces Vcesat Ic=4.0A of 800 Volts. It is robust, has low on-state losses, and has flat temperature dependence of characteristics. The Z0405MF 1AA2 is suitable for lots of applications, such as light dimming, motor control, heater automation, and energy saving. It has a high commutation performance, and is easily mountable, making it ideal for industrial applications.