OPB811W55

Series:	--
Packaging:	Bulk
Part Status:	Obsolete
Sensing Distance:	0.375" (9.53mm)
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 ~ 80°C
Mounting Type:	Chassis Mount
Package / Case:	Module, Pre-Wired
Type:	Unamplified

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

OPB811W55 Application Field and Working Principle

Optical sensors are the type of sensors which use light to detect the presence or absence of objects. Photointerrupters, such as the OPB811W55 Slot Type Transistor Output (OPT), are one type of optical sensor and use light to sense the presence or absence of an object. Specifically, the OPB811W55 detects objects passing through an air gap or slot, and provide a transistor output as a signal of that detection.

Application Fields for the OPB811W55

The OPB811W55 is commonly used in industrial automation settings such as machine control, pick and place machines, material handling, robotics, and automated conveyor systems. It is especially well suited for applications where there is a need to detect objects passing through a slot or air gap where direct contact with the object is not possible.

Working Principle of the OPB811W55

The OPB811W55 is a 3-pin slot photointerrupter that operates using the principle of photodetection. Internally, the OPB811W55 contains a light emitter and photodetector, and operates by emitting light from the emitter, which passes through an air gap or slot, and is received by the photodetector on the other side. When an object passes through the slot, it interrupts the light from reaching the photodetector, and the output is activated. The OPB811W55 has an integrated capacitor, which holds a voltage and acts as a buffer for the photodetector circuit. As the light from the emitter is blocked, the capacitor starts charging. When the light from the emitter is connected again, the capacitor discharges and the output is turned off. This feature prevents false signals from being generated due to static interference or ambient light. The output of the OPB811W55 is a standard NPN transistor output. When an object is detected, the output is activated and unblocked, allowing current to flow through the circuit. When the light is reconnected, the output is deactivated, blocking current from passing through the circuit. This transistor output makes the OPB811W55 compatible with a wide range of control applications.

Conclusion

The OPB811W55 Slot Type Transistor Output (OPT) is an optical sensor designed for applications where there is a need to detect objects passing through a slot or air gap without direct contact. It is commonly used in industrial automation settings and consists of an integrated light emitter and photodetector, with an integrated capacitor acting as a buffer for the photodetector circuit. Finally, the OPB811W55 has a standard NPN transistor output, making it compatible with a wide range of control applications.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description