4‑Pin Transmissive Photointerrupter with Phototransistor
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The ITR20501 is a transmissive photointerrupter manufactured by EVERLIGHT. This device integrates an infrared emitting diode and a phototransistor in a compact 4-pin package. The phototransistor detects the infrared light emitted by the diode, providing a signal when the light path is unobstructed. This component is designed for object detection and position sensing applications.
This photointerrupter is commonly used in various electronic systems requiring non-contact sensing. Its design makes it suitable for detecting movement or presence of objects in a defined space. It is frequently implemented in industrial and consumer electronics.