The CT817A(S)(T3) Optocoupler SOP-4 RoHS is a signal isolation product that is manufactured by CT Micro International. It uses an LED emitter and a photosensitive receiver in an optically coupled circuit. It is designed to transfer electrical signals from one circuit to another, while providing galvanic isolation between the circuits. The optocoupler offers high input-output isolation up to 3,000Vrms. It also offers fast voltage rise/fall times, low propagation delay, and fast response times, making it ideal for high frequency applications. It is provided in a 4-pin SOP package for easy installation and has a maximum operating temperature of 105°C. The product has been fully RoHS compliant, and is certified to UL, CSA, VDE, CE, and CQC.