OPB665T

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Optical sensors have been widely used in many industries and applications. In particular, photointerrupters are a type of optical sensors that have been utilized to detect the absence or presence of an object. Among them, slot type photinterrupters consists of a light emitting diode (LED) and a phototransistor that are optically coupled within a black plastic case. They are primarily used for detecting the absence or presence of slots in motor shafts, or other applications such as counting objects, position switching, using as encoders, and more. Due to their small size, ease of use, reliable construction, and low operating costs, photointerrupters such as the OPB665T are popular choices as they provide solid performance for various applications.

The OPB665T slot type photointerrupter is designed specifically for motor control applications, with various operating characteristics. This device consists of an infrared LED and GaAIAs infrared phototransistor, and a black molded plastic package designed to provide an ideal light–shielding. It is ideal for the detection of small slots and cutouts located on motor shafts, and can detect slots as small as 0.7mm. The OPB665T package contains two pins for electrical connections, with the LED connected to power supply, while the phototransistor output is opened or closed depending on the status of the slot sensing window.

In operation, the LED part of the OPB665T emits light when power is supplied to it. This light then passes through the slot sensing window, which is then picked up by the phototransistor. When an object is blocking the slot, the light will be blocked, which causes the phototransistor to turns off. The output from the phototransistor can be used to detect the status of the slot, and it is usually in the form of a logic low signal when a slot is present and a logic high signal when a slot is absent. Thus, the OPB665T can be used to detect the presence or absence of an object.

The OPB665T offers many advantages such as long life, reliable operation, and robust design.It has a wide operating temperature range from -40°C to +85°C. And as it is designed with gold plated leads, it provides low contact resistance and superior corrosion resistance, which helps to extend the life of the device. The slot sensing window can also be adjusted within a range of 0.2mm to 1.2mm.

The OPB665T slot type photointerrupter is a reliable device that can be used for various applications such as encoders, position switching, count objects, and more. Its small size, reliability, robust design, wide operating temperature range, and low operating costs makes OPB665T an ideal choice for many projects.

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