PDB-C202

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Optical sensors are special types of sensors used to detect optical signals from a variety of sources, such as light, infrared radiation, or optical radiation. Photodiodes are a type of optic sensor that convert light energy into electrical current output. Photodiodes are used in a wide range of applications, and the PDB-C202 is one such photodiode that is specifically designed to maximize performance and sensitivity. This article will discuss the application field and working principle of the PDB-C202 photodiode.

The PDB-C202 is a wide-band photodiode specifically designed for RF applications. This photodiode is ideal for low-light detection and features a large active area and extremely low dark current. It also offers the highest gain in the industry from 300MHz to 12GHz or more, with a large signal-to-noise ratio. The PDB-C202 can be used in applications such as optical receivers, optical power detectors, laser radar systems, and optical encoders.

Furthermore, the PDB-C202 is a leadless component with an absolute power rating of 5mWatt at 5V. It has a frequency response of 690kHz (down to 50MHz) and its working temperature range is -45°C to +85°C. The PDB-C202 is also RoHS-compliant and has a built-in ESD protection circuit against electrostatic charges.

This photodiode is typically used when an output signal must be true to the input signal. The reasons for this are because photodiodes have a wide frequency range, low dark current, and are particularly useful in low-light environment. Photodiodes are also useful when fast response time is desired, when a linear response to light is required, and when small size is preferred. The PDB-C202 photodiode has all these features in addition to its exceptional performance.

In terms of its working principle, the PDB-C202 consists of two complimentary layers, the P-type (positive charge) and the N-type (negative charge). When light hits the photodiode, electrons are knocked from the N-type layer and are attracted to the P-type layer. This creates an electric potential between the layers, which is detected as an electrical signal. The higher the intensity of the light, the greater the potential, and the larger the electrical signal. This signal can then be amplified to create an optical signal.

The PDB-C202 is an ideal photodiode for many applications, offering low-light detection, high gain, and excellent repeatability. With its wide frequency response, it can be used for a variety of applications that require good sensitivity and response time. Additionally, its RoHS-compliance and ESD protection make it a safe and reliable component for any application.

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