The CNY70 is a reflective sensor that includes an infrared emitter and phototransistor in a leaded package with a daylight blocking filter.
These work great as close-range proximity sensors, tachometers, or line following sensors.
Specifications of CNY70 Reflective Optical Sensor Switch:
Emitter Wavelength : 950nm
Forward Current (Max) : 50mA
Forward Voltage :1.25-1.6V
Power Dissipation :100mW
Detector Type : Phototransistor
Filter : Daylight Blocking
Collector Current (Max) : 50mA
Power Dissipation : 100mW
Dimensions (Excluding Pins) : 7x7x6mm