PT481F

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The PT481F is an semiconductor optical sensor that detects light by using a phototransistor. It is designed to respond to visible light with a wavelength range from 400 to 700 nm, making it an ideal choice for applications that require precise control and timing accuracy. The PT481F phototransistor consists of a light-sensitive collector-complete package with an integrated optical filter, an emitter, and a base. It is also equipped with a protective dark shield to reduce the effects of external ambient light interference.

The PT481F series is primarily used in applications where the output signal needs to be activated under certain light conditions. It is useful in temperature control, daylight intensity sensing, automatic illumination, motion detectors, and other applications. It can also be used for detecting various light sources such as lasers, LEDs, and halogen light. The PT481F is conveniently connected by wire connections or a PCB header, making it a highly versatile and reliable component for a variety of applications.

The working principle of the PT481F is based on its ability to detect light using a phototransistor. The phototransistor is a type of transistor that uses the photoelectric effect to control current flow when it is exposed to light. This effect occurs when part of the absorption of a photon of light generates an electron-hole pair in the semiconductor junction of the phototransistor. The current then flows through the junction, producing an output signal.

The PT481F has a low current output, low saturation voltage, fast response time, and a high power dissipation. It also has low noise, high off-state leakage current, and can operate at temperatures up to 105°C. The LED indicator on the face of the device serves as an indicator of when the phototransistor is illuminated. When the LED is illuminated, the current will be blocked and the output voltage drops to zero. The PT481F is available in a variety of packages and sizes, making it suitable for applications in both industrial and consumer products.

Overall, the PT481F is a robust and reliable optical sensor suitable for a variety of applications. With its fast response time, low saturation voltage, low current output, and high power dissipation, it is an ideal choice for applications that require precise control and timing accuracy. The LED indicator on the device serves as an indicator of when the phototransistor is illuminated, making it great for applications where it’s important to know the level of light being emitted. The PT481F is available in many different packages and sizes and is an excellent choice for both industrial and consumer applications.

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