Electronic Products & Technology

Reflective optical sensor saves space, boosts performance

Stephen Law   

Automation / Robotics Electronics Optoelectronics automotive optical Sensor

VISHAY INTERTECHNOLOGY VCNT2025X01 AEC-Q101 qualified reflective optical sensor for automotive, smart home, industrial, and office applications provides a lower profile than previous-generation solutions, while delivering improved performance with a higher current transfer ratio (CTR) and operating temperature. Device combines an infrared emitter, silicon phototransistor detector, and daylight blocking filter in a miniature 2.5mm by 2.0mm by 0.6mm surface-mount package. Device delivers a compact construction in which the emitting light source and detector are arranged in the same plane. The sensor’s analog output signal at the phototransistor is dependent on the amount of light emitted by the IR LED and reflected off an object in the sensor’s field of view. A built-in daylight blocking filter greatly suppresses disturbing ambient light, thereby increasing the signal-to-noise ratio. Device’s robust FAM package reduces crosstalk and features wettable flanks to enable optical inspection of the solder joints.

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