OPB876L55

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Optical Sensors, also known as ambient light sensors or photosensors, are electronic devices and components used in sensing the intensity of light, either through incident light on the surface or measuring light emitted from its source. Photointerrupters are one type of such sensors that are used to detect the presence or absence of certain objects, or to measure displacement and position by either emitting or receiving a beam of light, and interpreting the detected interruption within the beam.

Slot Type Photointerrupters, in specific, are usually used in devices with tightly confined operating parameters as they are able to detect when an item passes through a machined slot or opening in otherwise tightly packed or quickly moving areas. The OPB876L55 Photointerrupter is an example of such a sensor, incorporating a compact, relay-based transistor output type.

The OPB876L55 is primarily used in a variety of industrial, consumer and commercial applications, such as in personal computers and peripherals, office automation equipment, automotive, and industrial applications, including transportation, process control and factory automation. They typically come in a small, surface mountable 8-pin package, making them easy to install and use in space-constrained applications.

The OPB876L55 takes the form of a compact photointerrupter incorporating an internal transistor output. The slot type sensor incorporates an infrared LED and an NPN silicon phototransistor in a 6-pin package. The pair are mounted in an opposed or reflective configuration, usually in pairs, with a predetermined gap between them. light from the LED is intercepted by the phototransistor when an object passes through the slot, causing the transistor to switch output from low to high.

In terms of design and functionality, the OPB876L55 is a shutter-type, relay-based sensor which features a wide operating voltage range of 4.5V to 36V, a operating current of 20 mA, and a response speed of up to 100kHz. It is designed to switch between high and low output when light is interrupted and features a through-beam mode, meaning it is able to detect objects passing through any gap between the LED and phototransistor, regardless of its size or shape. It also features antistatic electrodes, making it particularly resistant to electrical interference.

The OPB876L55 is an excellent example of optical sensors, offering simplicity of detection, cost-effectiveness, and reliable performance suitable for a variety of applications. Its small and reliable package makes it popular with manufacturers, especially for sensor-application designs with stringent space requirements.

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