Fairchild Semiconductor offers a wide variety of photointerrupters and photodetectors. Fairchild specializes in leading-edge silicon and packaging technologies with manufacturing strength and system expertise for consumer, communications, industrial, portable, computing, and automotive systems.
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 QRD1114 Reflective Sensor
The QRD1114 reflective sensor consists of an infrared emitting diode and an NPN silicon phototransistor mounted side by side in a black plastic housing. The on-axis radiation of the emitter and the on-axis response of the detector are both perpendicular to the face of the QRD1114. The phototransistor responds to radiation emitted from the diode only when a reflective object or surface is in the field of view of the detector.
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