OPB841W51

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Optical sensors are devices that detect and measure the presence, absence, or intensity of an optical input such as light, infrared, or ultraviolet radiation, and convert this input into a detectable electrical output. A type of optical sensor is the photointerrupter, which is specifically used to detect the presence, breakage, or absence of an object in the sensing area. The slot type photointerrupter is designed to detect an object passing through a slot, where a light beam is emitted from a light-emitting diode and is received by a phototransistor.

The OPB841W51 is an example of a slot type optical sensor with a transistor output designed for a variety of applications ranging from the automation of appliances to consumer electronic devices. It consists of an infrared LED and a phototransistor mounted on opposite sides of a marked plastic slot. The plastic slot is designed for an object to pass through without interfering in its operation. When an object passes through the slot, the emitted infrared light beam is interrupted, which reduces the transistor collector current and generates a corresponding voltage drop. This interruption of light is registered as an electrical signal by the phototransistor, indicating the presence or absence of an object in the sensing area.

The OPB841W51 has a maximum operating voltage of 2.5 V and a maximum power of 0.6 W, and is designed to be installed in high-density applications, providing superior accuracy and sensitivity compared to traditional photointerrupters. Its design also ensures reliable operation in high-voltage environments, making it a suitable choice for automotive and industrial applications. The device also features a built-in noise filter, making it ideal for applications that require low noise levels.

The OPB841W51 has a wide range of features that make it an attractive solution for a variety of applications. It has a low-power activation current rating of 25 mA, making it suitable for battery powered applications. The device is also RoHS compliant, making it safe to use in home and industrial environments. Additionally, the device is designed to provide reliable operation in temperatures ranging from -25°C to +85°C.

The OPB841W51 is a highly reliable optical sensor that is suitable for a wide variety of applications. It is designed to provide accurate and reliable detection of objects passing through its sensing area, and its low-power operation and wide temperature range make it a suitable choice for a variety of applications. The device is RoHS compliant, ensuring safety in home and industrial applications, and its built-in noise filter ensures low-noise operation.

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