Electronics CorporationThe K30102C TLD with SMD-4 Optocouplers is an industry-standard electronic part manufactured by Cosmo Electronics Corporation. It is a RoHS compliant device and consists of four optocouplers each containing a phototransistor and an LED. The phototransistor transmits electrical signals from the LED to the circuit, while the LED provides an optical signal source. This device features an insulation voltage up to 2500V, isolation distance of 0.5mm, CTR values from 400% to 800%, wide common-mode transient immunity, and superior noise rejection and a response time of less than 1 µs. It is suitable for use in electrical isolation, sensor interfacing, analog signal isolations, and industrial automation applications.