The FT-CNY17, FT-4NXX series of devices each consist of an infrared emitting diode optically coupled to a phototransistor.They are packaged in a 6-pin DIP package and available in wide-lead spacing and SMD option.
The FT-827 series devices each of consist of an infrared emitting diodes, optically coupled to a phototransistor detector.They are packaged in a 8-pin DIP package and available in wide-lead spacing and SMD option.