OPB872P55

Series:	--
Packaging:	Bulk
Part Status:	Obsolete
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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OPB872P55 application field and working principleOptical sensors are devices that use light to detect physical changes in order to interpret signals or to gather information. The Photointerrupters Slot Type Transistor Outputs are a variety of optical sensors that couples an infrared LED emitter with an NPN silicon phototransistor detector integrated in the same package. The OPB872P55 is an example of such Photointerrupters. The OPB872P55 can be used to detect presence, label printing, noncontact switches, motor commutation and many other applications. The device is usually used in optical communication, domestic appliances, latching switches, printers, consumer electronics, automotive applications, and textile machinery. The working principle of the OPB872P55 is simple. It uses an infrared light-emitting diode (LED) to transmit light to a phototransistor detector that is integrated in the same package. Since the light-emitting diode and the phototransistor are in close proximity, the transmission of the light from the LED will be detected by the phototransistor. When an object block the area between LED and phototransistor, the phototransistor will changes the output state from ON to OFF state. The OPB872P55 also has a few features that make it suitable for magnetic applications. Firstly, it has a wide optical barrier which is suitable for detecting the relatively large objects. Secondly, it has a long operating range and is immune to external light interference. Thirdly, it has good immunity against magnetic flux noise and thus can be used in applications with magnetic interference, such as motors or compact disks. Finally, it has a low power consumption and a fast response time, making it ideal for applications that require fast operations. In conclusion, the OPB872P55 is an example of the Photointerrupters Slot Type Transistor Outputs optical sensors. It is suitable for presence and latching switches, motor commutation, textile machinery, domestic appliances, label printing, automotive applications, and many other applications. Its working principle is simple; it uses an infrared LED emitter to transmit light to a phototransistor detector that is integrated in the same package. Its features, such as wide Optical barrier, long operating range, good immunity against magnetic flux noise, low power consumption, and fast response time, make it suitable for various applications.

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