The EL817S1(C)(TU)-F with Optocouplers SMD-4 RoHS is a passive integrated component manufactured by Everlight. It is configured with 4 channels and features an open collector output type. The EL817S1(C)(TU)-F is an optocoupler which utilizes a GaAs infrared LED as the light source which activates a phototransistor detector when triggered. This device is compliant with RoHS (Restriction of Hazardous Substances) standards and is available in a surface mount (SMD) package. It is suitable for a variety of applications found within the industrial, automotive, and consumer electronic markets.