PDU-C109

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Optical sensors are devices used to detect light in industrial, automotive and consumer products. They are also used in applications such as barcode readers, motion sensing, robotic navigation and military surveillance. Photodiodes are a type of optical sensor that converts light into electrical current or voltage when exposed to light. The PDU-C109 is a unique type of photodiode that offers excellent linearity and sensitivity. This article will discuss the application fields and working principle of the PDU-C109.

The PDU-C109 is a PIN photodiode built on a silicon chip. It is sensitive to visible light, infrared light, and ultraviolet light, making it suitable for a wide range of applications. It can operate over a wide temperature range and has a spectral response that is linear over the range of 400 to 1100 nm. The diode is packaged in a small form factor with a transparent window to let light in. It has reverse-bias characteristics, meaning that when no light is striking the diode, the output is zero.

The PDU-C109 is typically used in motion sensing and automotive applications. It is widely used in motion detectors such as in alarm systems. Its wide linear spectral response makes it ideal for automotive applications, such as daytime running lights and emergency warning lights. It is also used in barcode scanners and military surveillance applications. With its wide operating temperature range and durable housing, it can work reliably in a variety of environments.

The working principle of the PDU-C109 is simple. When it is exposed to incident light, electrons in the N-type base region are released, creating a current flow from the anode to the cathode. The resulting current is a measure of the intensity of the light, and can be displayed on an analog display or read by a microcontroller. The reverse-bias characteristics of the diode also ensure that when no light is impacting the diode, the output is zero.

The PDU-C109 is a versatile and reliable PIN photodiode that can be used in a wide range of applications. With its linear spectral response, wide temperature range, and reverse-bias characteristics it is an ideal solution for motion sensing, automotive, and barcode scanning applications. The simple working principle of the photodiode ensures reliable operation for any application.

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