PNZ108

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Optical sensors are electronic components used to sense light in the form of optical signals. Phototransistors are the most common type of optical sensor, and one of their popular models, the PNZ108, is widely used in various applications. This article will discuss the application field and working principle of the PNZ108 phototransistor.

The PNZ108 is a family of NPN silicon phototransistors that are designed for applications including optical data communication, general purpose logic control, and detection of light in noise environments. The device is optimized for both direct optical control of electrical signals and control of electronic equipment through integrated logic. With its low operating current, capabilities of detecting optical signals in the 660nm to 1.1μm wavelength range, and wide gain response range, the PNZ108 is suitable for use in a variety of optical sensing applications.

The working principle of the PNZ108 phototransistor is based on the photovoltaic effect. When light shines on the device, electrons are induced in the base region and, consequently, current flows from the collector to the emitter. The device has a responsivity of 500mA/ lm and is relatively low in both leakage current and noise. The device also has an open collector, allowing direct connection to microprocessor control circuitry. The PNZ108 is remarkably fast and has a rise time in the order of 0.25μs.

The PNZ108 phototransistor is commonly used in optical measurement and data communication systems, such as photoelectric controllers, position indicators, optical level sensors, and photoelectric switches. The device is also commonly used in fiber optic applications, including fiber optic communications, fiber optics surveillance, and optical fiber alarms. Additionally, the PNZ108 is used for security and access systems, such as automatic entrance doors, automobile anti-theft systems, and alarm systems.

The PNZ108 phototransistor has features that make it suitable for both basic and more advanced applications. It has a wide range of integrated optical functions, allows direct connection to processor control operations, and has a robust design that makes it resistant to shocks, vibration, and extreme temperatures. Its low power consumption makes it particularly attractive for low-battery applications.

In conclusion, the PNZ108 phototransistor is a widely used optical sensor that is suitable for a variety of applications. The device has a fast response time, low power consumption, and robust design, making it popular for both basic and advanced applications. It is optimized for direct optical control of electrical signals and control of electronic equipment through integrated logic. Therefore, the PNZ108 phototransistor is a popular choice for manufacturers and engineers seeking a reliable and efficient optical sensor.

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