SFH 313 FA-3/4

Series:	*
Packaging:	Bulk
Part Status:	Active
Voltage - Collector Emitter Breakdown (Max):	70V
Current - Collector (Ic) (Max):	50mA
Current - Dark (Id) (Max):	200nA
Wavelength:	870nm
Viewing Angle:	20°
Power - Max:	200mW
Mounting Type:	Through Hole
Orientation:	Top View
Operating Temperature:	-40°C ~ 100°C (TA)
Package / Case:	Radial - 2 Leads

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Introduction

The SFH 313 FA-3/4 is an optical sensor that is used in many applications such as the detection of light levels, air pollution, and the confirmation of moisture levels. It uses a phototransistor to detect the amount of light reflected, or emitted from a given source.

Application Field

This sensor is ideal for measuring light levels in industrial, domestic, and automotive applications. It is used to detect light levels in large industrial spaces to help discern between working, safety, and environmental levels. By providing accurate readings, it also allows for energy-efficient lighting and building design, and improved levels of safety.The sensor can also be used to detect air pollution levels as well as the presence of moisture. In industrial settings, it is useful for confirming and measuring moisture in areas such as wood and insulation, to determine if it is safe to enter. Detecting low-level levels of air pollutants, such as particulates, is also essential in monitoring safety levels in these areas.

Working Principle

The SFH 313 FA-3/4 uses a phototransistor to detect the amount of light reflected, or emitted from a given source. A phototransistor is a transistor that has a built-in photodiode. This allows it to detect small changes in levels of light and then produce an output signal.When exposed to light, the phototransistor will conduct current. The amount of current conducted depends on the amount of light detected. This changes the voltage potential and is then used to produce an output signal. The output of the phototransistor is then used to provide an indication of light levels.The SFH 313 FA-3/4 also has built-in amplifier circuitry, allowing it to operate with a wide range of light levels. This makes it ideal for detecting small amounts of light in industrial areas, as well as large amounts in automotive applications.

Conclusion

The SFH 313 FA-3/4 is an optical sensor that is used to detect the amount of light reflected, or emitted from a given source. It uses a phototransistor and is perfect for industrial, domestic, and automotive applications. It can be used to measure light, air pollution, and moisture levels, in order to improve safety and comply with environmental regulations. The phototransistor allows it to respond quickly to small changes in light levels and provide an accurate reading. It also has built-in amplifier circuitry, making it ideal for a wide range of applications.

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