OPB861N51

Series:	--
Packaging:	Bulk
Part Status:	Active
Sensing Distance:	0.125" (3.18mm)
Sensing Method:	Transmissive
Output Configuration:	Phototransistor
Current - DC Forward (If) (Max):	50mA
Current - Collector (Ic) (Max):	30mA
Voltage - Collector Emitter Breakdown (Max):	30V
Response Time:	--
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Chassis Mount
Package / Case:	Module, Pre-Wired
Type:	Unamplified

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Optical sensors are a common type of sensing equipment used in a wide range of applications. The OPB861N51 is a specific type of optical sensor that falls within the category of photointerrupters, and uses a slot type with transistor output. This type of sensor utilizes the interruption of an infrared beam to detect the presence of an object, as well as detect reflecting surfaces. With these features, the OPB861N51 can be used in a variety of different applications, such as presence/absence detection, object detection, and even motion detection. Before diving into specific applications, it is important to understand the basic working principle of the OPB861N51. There are three main components to this type of opto-interrupter: an infrared light source, a phototransistor, and an optical detector. The infrared light source, typically an LED (light emitting diode), provides a sustained infrared light beam. When an interruption, or break, in the beam is sensed, the phototransistor supplies a voltage or current signal to the optical detector. The optical detector, in turn, registers the change in the supply of optical energy and sends a corresponding output signal. In terms of applications, the OPB861N51 can be used for various detection purposes. With the interruption of the infrared light beam caused by the presence of an object, the OPB861N51 can be used for presence/absence detection, ideal for identifying the presence or absence of a part on a production line. Additionally, the OPB861N51 can be used to detect objects, whereby the presence of its infrared beam is interrupted by a reflective surface. Such an application may be useful in a number of different places, such as manufacturing plants, engineering projects, and even automated car washes. Finally, the versatility of the OPB861N51 offers motion detection capabilities. When mounted in a specified direction, the infrared beam of the opto-interrupter is interrupted when the object moves within a certain range. This motion detection method is highly useful in the construction of automated control systems, allowing for controlling of the operation of a machine or robot. Thus, the OPB861N51 is an optical sensor that falls within the category of photointerrupters, making use of a slot type with transistor output. With the detection of a break in the continuous infrared light beam, this opto-interrupter can be used for various applications such as presence/absence detection, object detection, and even motion detection. Practical applications of the OPB861N51 can range from manufacturing processes to robotics and automated control systems, enabling the detection and operation of objects.

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