QSA156

Series:	OPTOLOGIC®
Part Status:	Obsolete
Wavelength:	880nm
Type:	Photo Detector, Logic Output
Output Type:	Push-Pull
Package / Case:	TO-18 small
Operating Temperature:	-55°C ~ 105°C (TA)

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Introduction: The QSA156 is an optical logic output photo detector from QT Optoelectronics. It is part of their range of optical sensors, photo detectors and logic output devices used in many industrial and consumer applications. This article will discuss the application field of the QSA156, its working principle, and the advantages and disadvantages of this type of device. Application Field: The QSA156 can be used in a variety of applications such as industrial robotics, process automation, agriculture monitoring, surveillance systems, medical technology, and many other areas. It is a compact, low profile, and lightweight device with a sensitivity range of up to 200V/W. The main advantage of the QSA156 is its ability to quickly respond to high illumination levels, making it ideal for applications where precision and speed are required. Working Principle: The QSA156 consists of two basic components: an LED and a photodiode. The LED emits a light beam which is monitored by the photodiode. When the light beam is interrupted or blocked, the photodiode will detect this interruption and will create a logic level output (logic 0 or logic 1) based on the current set point of the light beam. This output can then be used to control other devices such as relays, motors, and other equipment. Advantages: The main advantages of the QSA156 include its high speed response time, its compact size and light weight, and its high sensitivity range. It also provides an easy, cost efficient solution for applications where precision and speed are required.Disadvantages: One of the disadvantages of the QSA156 is that it is affected by varying levels of ambient light. If the ambient light is too bright or too dim, the device may not be able to accurately detect the light beam and provide an accurate output. Another disadvantage is that the device must be calibrated correctly to ensure that the output accurately reflects that of the light beam. Conclusion: The QSA156 is a versatile and powerful device that can be used in a variety of applications. It is compact, low profile, and lightweight and can quickly respond to high illumination levels. Its main disadvantages are its sensitivity to varying levels of ambient light and the need for correct calibration. However, when used in the right application it can be a very useful and cost-efficient solution.

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