OPB891N55

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Optical Sensors are widely used in multiple applications, from automotive safety to electronics or security. They are typically composed of an emitter and a receiver and they measure the light intensity in the air, enabling them to detect the presence of objects, as well as to measure distance or presence. Photointerrupters are an example of Optical Sensor, as they use optical means to detect the presence of an object. They are especially useful for the detection of movement, as an interrupt between the emitter and receiver is created.The OPB891N55 is a particular Photointerrupter, being a slot type with transistor output. It is specifically designed for applications requiring positioning and speed detection, as well as consumer electronic applications. Its main characteristics, including its 3.2V operating voltage and 2mm slot width, make it suitable for a number of applications in different sectors.The working principle of the OPB891N55 begins with the LED emitter, which emits light with a wavelength between 800 and 900nm. The light then travels through the slot and is detected by the phototransistor. The phototransistor has a supply current between 5 and 20 mA and a high gain in photovoltaic mode. When an object passes through the slot, this interrupts the transmittance of the light and consequently reduces the current in the transistor. This results in the output signal changing its state, either to low or to high, becoming an input signal for the control systems.The OPB891N55 is typically used for rotary speed detection, positioning detection, and pushing/stopper detection. It is also used for consumer electronic applications, such as keyboards and access control systems.In terms of applications, the OPB891N55’s repeatable accuracy of 0.1mm makes it suitable for high precision devices. It has a wide operating temperature range from -40 to +85 degrees Celsius, making it suitable for extreme temperature environments. It also features low light leaking, which prevents it from detecting a low level of external light, making it more reliable.In addition, the OPB891N55 has an operating life of 40 million times, making it an ideal choice for long-term applications. Its fast response time of 1 millisecond supports high speed operation with low power consumption, making it one of the most efficient Photointerrupters available.The compact design of the OPB891N55 also makes it suitable for a number of applications. Its small size of 10mm x 32mm makes it perfect for devices with limited space. It also features a low profile and a vertical mounting option, which makes it easier to install in narrow spaces.Overall, the OPB891N55 provides an accurate, reliable and efficient solution for a variety of applications, including rotary speed detection, positioning detection, and consumer electronic applications. Its attentive features and design make it an ideal choice for any project.

The specific data is subject to PDF, and the above content is for reference