OPB687

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The OPB687 is an optical sensors category of photointerrupters, slot type, with logic output technology. This small device is designed for switching capacitive loads. It works with an illuminated infrared LED and an NPN Silicon phototransistor.

The OPB687 is equipped with a dual emitter and self-aligned slots for increased noise immunity. The photointerrupter is sealed in a UL 94V-0 package and provides improved reliability of operation and longer lifetime when compared to through-hole photointerrupters.

The OPB687 application field includes sensing a variety of proximity and reflective objects such as photo interrupts, tape reader, speed and coun slides. This device is a low-cost and easy-to-integrate solution suitable for a wide range of applications.

The OPB687 working principle involves the use of the emitter and receiver components to detect an object and create a low level voltage output. The output voltage is proportional to the intensity of the direct light from the emitter and reflected by the object being detected. The detection range varies with the material of the detected object and the reflectivity of the surface. The device is designed to detect objects in the range from 3 mm to 5 mm.

The OPB687 operates on 12V DC supply and draws a nominal current at 25 mA. Its switching current output is 200 mA for direct drive. An advantage of this device is that the digital output logic provides an easy interface for single or dual input monitoring.

Its operating temperature range is between -40℃ to 85℃. The device offers a superior sensing stability and accuracy due to the self-aligned slots and the dual high-output emitters. Additionally, it features a uniform and precise sensing spot size for repeatable switching operation.

The OPB687 offers an attractive combination of superior performance with cost-effectiveness for industrial-grade applications. It delivers reliable and efficient operation and provides high-speed operation with precise and reliable switching. It is the ideal choice for industrial proximity sensing, material handling, and detection.

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