OPB871L55TXV

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:	Through Hole
Package / Case:	PCB Mount
Type:	Unamplified

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Introduction
The OPB871L55TXV is a slot type transistor output photointerrupter (optical sensor) designed specifically for sensing the movement of objects in automated assembly and process equipment. The OPB871L55TXV utilizes an IR LED (light emitting diode) and an NPN available phototransistor that offers a wide range of utility applications. The OPB871L55TXV features a high speed response time of 140ns, small size, low contact resistance, a wide operating range, and low power consumption. It is also designed for low-noise applications with a built-in noise reduction function.

Working Principle
The working principle of the OPB871L55TXV is quite simple. The output signal is generated when its internal phototransistor is exposed to light. The phototransistor responds to light by generating a current which is then used to actuate its output function. This output is normally in the form of an electric voltage or current depending on the type of output specified model. When the light is removed, either due to a mechanical interruption or due to a decrease in the amount of ambient light, then the output signal terminates and the OPB871L55TXV switches to its “off” state.

Applications
The OPB871L55TXV is suitable for a wide range of applications in industry such as:

• Automated assembly and process equipment
• Automated packaging equipment
• Positioning and automotive systems
• Inspection process control
• Electronic shutter control
• Events counting
• Material handling machines
• Security systems

Due to its small size, the OPB871L55TXV is well suited to applications where size requirements are paramount. It is also suitable for applications where low power consumption is paramount such as in battery powered systems. Its wide operating range also makes it suitable for a wide range of environments, both indoor and outdoor. In terms of reliability, the OPB871L55TXV is designed to be highly reliable, even in harsh conditions, with a mechanical life of up to 2 million cycles and guaranteed operation from -10C to 75C.

Conclusion
The OPB871L55TXV is an excellent choice for applications needing a reliable, high speed response, low contact resistance, low power consumption, and a wide operating range. In addition, its small size makes it ideal for applications where size matters. By utilizing the built-in noise reduction function, the OPB871L55TXV is suitable for low-noise applications, and its high reliability ensures that it will provide reliable operation in even the harshest of environments. The OPB871L55TXV is a perfect solution for any application requiring a reliable slot type transistor output photointerrupter.

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