PT481E00000F

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Optical Sensors - Phototransistors are a form of semiconductor that detects light in the form of photons when they enter the PN junction. The PT481E00000F is an NPN type photocoupler which combines an Infrared LED and an NPN silicon phototransistor into a single four-terminal package. The package is molded out of a black thermoplastic, and typically includes a mating connector.

Application Field

The PT481E00000F is a popular choice for a variety of applications. In general, it is used to detect the presence of light, especially in the infrared spectrum. It can be used to create light barriers for safety and security applications, or used to sense when a person or object passes through its field of view. It can also be used in optical position sensing applications, as well as motion sensing applications.

Working Principle

When the infrared LED in the PT481E00000F is powered, light in the infrared spectrum is emitted. When a photoconductive material enters the field of view, the reflected light is detected by the phototransistor and the current in the phototransistor increases. The most common way to measure the current is using an analog-to-digital (A/D) converter. The output of the A/D converter is proportional to the amount of light detected by the phototransistor.

The PT481E00000F sensor is capable of producing a high sensitivity reading when detecting light. This means that even a small amount of reflected light can be detected and produces an output signal. This makes the PT481E00000F ideal for applications that require the detection of low levels of light.

Conclusion

The PT481E00000F is a four-terminal package containing an infrared LED and an NPN silicon phototransistor, used to detect the presence of light in the infrared spectrum. The sensor is suitable for a variety of applications, including motion or position sensing, as well as safety and security applications. Its high sensitivity allows for the detection of small amounts of light, making it ideal for low-light applications.

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