BS520

Series:	--
Packaging:	Bulk
Part Status:	Obsolete
Wavelength:	560nm
Color - Enhanced:	Blue
Spectral Range:	500nm ~ 600nm
Diode Type:	--
Responsivity @ nm:	--
Response Time:	--
Voltage - DC Reverse (Vr) (Max):	10V
Current - Dark (Typ):	3pA
Active Area:	5.34mm²
Viewing Angle:	--
Operating Temperature:	-20°C ~ 60°C
Mounting Type:	Through Hole
Package / Case:	Side View

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Introduction

A photodiode is an optical sensor capable of detecting light by converting it into an electric current. It is used in a variety of applications such as light detection, imaging, and communication. The BS520 photodiode is a type of photodiode known for its superior sensitivity, fast response time, and low dark current. It is commonly used for applications such as detecting very faint light in low-light environments, or for measuring the intensity of light in bright light conditions.

Working Principle

The BS520 photodiode is a silicon-based PN junction device that utilizes both semiconductor and photoelectric effects. When light is shone onto the PN junction, electrons become excited and move from the N-type material to the P-type material. This creates a current known as a photo-generated current, which is used to detect the intensity of the incoming light.The PN junction can be bias-forward or bias-reverse, depending on the application. In forward bias, the PN junction is designed to allow more electrons to move from the N-type material to the P-type material, while in reverse bias it is designed to inhibit the flow of electrons from the N to P. For the BS520, it is often used with a forward bias, as it is more sensitive in that configuration.

Optical Characteristics

The BS520 photodiode has a range of optical characteristics that make it suitable for various applications. Its spectral response range is from 200 nm to 1000 nm, which is wide enough to cover both visible and near-infrared light. It has a peak sensitivity of 890 nm, which is ideal for applications that require the detection of faint light in low light environments.The photodiode also has a very fast response time of 0.1 μs, which makes it suitable for applications that require fast light measurements. Additionally, it has a low dark current, which is important for applications such as medical imaging where even faint light must be accurately measured.

Applications

The BS520 photodiode is a versatile device that is used in a variety of applications. It is often used for applications that require the detection of very faint light in low-light environments, such as surveillance and security systems. Additionally, it is used for applications that require the measurement of very rapid light changes, such as in industrial sensing systems. The photodiode is also well-suited for medical imaging applications. Its fast response time and low dark current make it suitable for accurately measuring faint light that may be present in biological tissues.The BS520 photodiode is also used for light communication. Its spectral response range of 200 nm to 1000 nm is wide enough to cover various visible and near-infrared wavelengths, making it suitable for encoding and decoding messages in light signals.

Conclusion

The BS520 photodiode is a versatile and sensitive optical sensor that is used in a variety of applications. Its wide spectral response range, fast response time, and low dark current make it suitable for detecting faint light in low-light environments and measuring light intensity in bright light conditions. Additionally, its range of optical characteristics make it well-suited for applications such as medical imaging, industrial sensing, and light communication.

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