The K20102B TLD with SMD-6 Optocouplers is a phototransistor output optocoupler manufactured by Cosmo. This device provides galvanic electrical isolation between the input and output circuits, providing protection for sensitive circuits and ICs. It features a high-power LED which is optically coupled to a phototransistor output. The device is designed to be used with a wide range of inputs, and is available in a 6-pin, surface-mount package and is certified as RoHS compliant. The optocouplers are ideal for applications requiring electrical isolation, device-level signal switching, and logic interfacing. The high isolation characteristics and low propagation delay make them suitable for conditioning high-speed signals as well.