BS120

Series:	--
Packaging:	Bulk
Part Status:	Obsolete
Wavelength:	560nm
Color - Enhanced:	--
Spectral Range:	500nm ~ 600nm
Diode Type:	--
Responsivity @ nm:	--
Response Time:	--
Voltage - DC Reverse (Vr) (Max):	10V
Current - Dark (Typ):	3pA
Active Area:	1.55mm²
Viewing Angle:	--
Operating Temperature:	-20°C ~ 60°C
Mounting Type:	Through Hole
Package / Case:	Side View

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Optical Sensors - Photodiodes

Photodiodes are photodetectors that detect intensity changes in incident light. A photodiode is a semiconductor device composed of an absorption layer and a P-N junction. The P-N junction allows for the generation of a voltage drop when illuminated by light. BS120 is a type of photodiode that is particularly suitable for applications that require short-circuit voltage and fast response time. Due to its design, the BS120 is also very sensitive to IR radiation.

BS120 Application Field

The BS120 is an ideal photodiode for applications such as gas sensing, flame detection, and solar cell monitoring. In gas sensing, the BS120 is used to detect the presence of gases such as carbon dioxide, ammonia, and methane. By varying the resistance between the diode and a reference circuit, the BS120 is able to measure gas concentration. Another application for the BS120 is flame detection. Because of its sensitivity to IR radiation, the BS120 is able to detect the presence of fire and then alert the user. And finally, the BS120 is also used in solar cell panels to monitor the levels of light in the environment.

Working Principle

The BS120 is composed of a P-N junction and an absorption layer. When light is applied to the diode, the electrons from the P-N junction can move into the absorption layer, generating a voltage drop. The voltage that is generated in the diode is proportional to the intensity of the incident light.The BS120 is unique in that it is a short-circuit device. This means that when the diode is illuminated, the short-circuit current is generated and the voltage drop across the diode is small. This makes the diode suitable for low-voltage applications such as flame detection and gas sensing.The response time of the BS120 is also very fast. This is because the time it takes for the electrons to move from the P-N junction to the absorption layer is very quick. This makes the diode suitable for applications that require fast response times such as solar cell monitoring and flame detection.

Conclusion

The BS120 is a photodiode that is particularly suited for applications such as flame detection, gas sensing, and solar cell monitoring. It is unique in its design, which enables it to generate a short-circuit current when illuminated. Additionally, the response time of the BS120 is very fast, making it suitable for applications that require fast response times.

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