SFH 305

Optical Sensors - Phototransistors are a type of transducer that converts light into an electrical voltage or current. SFH 305 is one such device, and it is widely used for a variety of applications due to its high sensitivity and low cost. This article will discuss the application fields and the working principle of SFH 305.

Application Field

SFH 305 is widely used for real-time optical sensing applications. It can detect faint changes in light intensity, making it ideal for applications such as motion sensors, flame detectors, and smoke detectors. It can also be used to detect liquid level and pressure, as well as in automatic optical switches. In addition, SFH 305 is used in several medical equipment, such as endoscopes, and it is also used for spectrophotometry measurements.

Working Principle

SFH 305 is a phototransistor, which means it consists of a light-sensitive material and a bipolar transistor. When light falls on the device, it emits electrons, which are then amplified by the transistor. The output voltage of the device is then proportional to the intensity of the incoming light.

SFH 305 is a highly sensitive device, with a photosensitivity range of 0.2 lux to 10 lux. This means it can detect even the faintest changes in light intensity. It also has a wide operating temperature range of -40°C to 85°C, making it suitable for most applications.

In addition, SFH 305 is a low-cost device, so it can be used in a wide variety of applications. It also has a long-term stability, which means it can be relied upon to provide accurate readings over time.

Conclusion

SFH 305 is an optical sensor that is widely used for a variety of applications due to its high sensitivity, low cost, and long-term stability. It can detect even the faintest changes in light intensity and has a wide operating temperature range. This makes it a suitable choice for real-time optical sensing applications, such as motion sensors, flame detectors, smoke detectors, liquid level and pressure measurements, and spectrophotometry measurements, among others.