The KMOC3043 is a Triac Optocoupler DIP-5 RoHS manufactured by Cosmo. It is a solid state opto coupler that is RoHS compliant. It is a polarized opto coupler that is used in switching AC loads in the same or across situations. Its features a highly reliable opto-isolator transistor pair which provides excellent electrical isolation, high isolation voltage, high maximum switching voltage and current, fast response time, wide operating temperature range, and wide operation range. This module is easily installed in a DIP-5 package and can be used in a variety of applications such as power controllers, light dimmers, fans and motor speed controls. It is suitable for use in any low voltage applications with operating temperature up to 70 °C.