OPB972P11

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OPB972P11 Application Field and Working Principle

OPB972P11 is a slot type infrared emitted phototransistor module optoelectronic switch type photointerrupter, which belongs to the category of optical sensors.

Optical Sensors - Photointerrupters - Slot Type - Logic Output

Optical sensors are devices that detect measurable physical variables related to light. Photointerrupters, which are also known as slots-type optocouplers, contain a pair of active devices and an optically sensitive chamber containing the emitter and the receptor in a single package. They are ideally suited for point-to-point applications, such as end-of-line sensing or on-off logic binary states. A slot type photointerrupter is a passive device that utilizes an infrared emitting diode (IRED) that directly faces a phototransistor, hence when the two active devices are brought together and light falls on the phototransistor, the two devices have continuity and current will flow. Typical logic outputs of such devices include TTL, TVS, Schmitt Trigger and CMOS.The OPB972P11 is a logic output type slot type photointerrupter that utilizes a shielded infrared emitted phototransistor and is most commonly used in automation, robotics, machine vision, and other sensor-based applications. It responds to signals in the range of from 10 to 20 microseconds, and can detect opaque objects up to a few millimetres in size and an object spacing of around 2 mm or more from the face of the optoelectronic switch.The OPB972P11 operates in the following way. When the light emitted by the IRED is interrupted by an object, the phototransistor receives no illumination and the device is turned "OFF" ("low" output). When the phototransistor has light impinging on its base, it will turn "ON" ("high" output). The switching time between "ON" and "OFF" depending on the ambient light conditions typically takes around 15 microseconds. The typical maximum distance between the IRED and the phototransistor ranges between 0.35 to 0.45 millimetres.The OPB972P11 is a 3-wire optoelectronic switch constructed using a shielded infrared emitting diode and a phototransistor, allowing it to be secured in a variety of system or product orientations. The OPB972P11 has an operational voltage between 2.7 and 5.5 volts and a current consumption of from 6mA max at a supply voltage of 5 volts to 12mA max at a supply voltage of 15 volts. The saturated voltage of the device is 1.3 - 1.6V, with a light current between 20 - 120 mA.In conclusion, OPB972P11 is a slot type logic output type photointerrupter device with numerous applications in automation, robotics, machine vision, and other sensor-based areas. It is designed for easy connection to a variety of systems, and has a variety of input and output options.

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