OPB375N11

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OPB375N11 is an optically actuated, slot-type, transistor output phototransistor sensor which belongs to the optical sensor family of photointerrupters. It consists of an optically sensitive NPN output transistor and two inverse-parallel connected gallium arsenide infrared light emitting diodes (LEDs). This device detects the presence of objects in a narrow slot, accurately and quickly.

The main application of OPB375N11 is motion sensing, where it can be used to detect the presence or absence of an object in a slot. It can be used for triggering an event when the slot is filled or opened up. It is also used for detecting minor changes in slot width, which can indicate various measurements such as width, length, speed, or other parameters. It can also be used to detect the presence of a part or element in the slot, either to monitor their presence or change in position.

The working principle of this device is based on the change in the emitted light level and the reflected light when an object passes through its slot. When the sensor is turned on, the two LEDs transmit infrared light, which passes through the slot. When an object blocks the slot, the sensor detects the decrease in radiated light and turns off the output transistor. This in turn stops the internal flow of current within the device.

When the object has been removed, the light intensity is restored to its original level and the device is triggered again. The voltage level of the output transistor remains low until the output slot is blocked again. This allows the device to detect a wide range of objects, including thin objects such as paper, as well as thick objects such as metal. The sensing range of the OPB375N11 is adjustable, enabling it to detect objects of different sizes up to a maximum width of 5.5 mm.

The OPB375N11 is a highly reliable sensor that is well suited for a variety of applications, including industrial process monitoring, motion sensing, and speed measurements. Its high sensitivity and precision make it an ideal choice for a wide range of sensing tasks, including the detection of objects of varying sizes, shapes, and compositions.

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