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OPB844B
Product Overview
The OPB844B is a photo interrupter sensor that belongs to the category of optoelectronic devices. It is commonly used for detecting the presence or absence of an object, and it is characterized by its compact design, high sensitivity, and reliable performance. The sensor is typically packaged in a small housing and is available in various packaging quantities to suit different application needs.
Specifications
- Operating Wavelength: 950 nm
- Aperture Width: 0.030" (0.76 mm)
- Aperture Material: Plastic
- Output Configuration: Phototransistor
- Supply Voltage: 5 V
- Operating Temperature Range: -40°C to 85°C
Detailed Pin Configuration
The OPB844B sensor has a standard 4-pin configuration: 1. VCC (Supply Voltage) 2. GND (Ground) 3. Output 4. N/C (Not Connected)
Functional Features
- High sensitivity to detect objects within the specified range
- Fast response time for real-time object detection
- Compact size for easy integration into various applications
- Reliable performance in diverse environmental conditions
Advantages and Disadvantages
Advantages
- Compact design
- High sensitivity
- Wide operating temperature range
- Fast response time
Disadvantages
- Limited operating voltage range
- Susceptible to ambient light interference
Working Principles
The OPB844B operates based on the interruption of the infrared light beam between the emitter and detector components. When an object passes through the sensing area, it obstructs the light, causing the phototransistor to switch states and produce an output signal.
Detailed Application Field Plans
The OPB844B sensor finds extensive use in various applications, including: - Object detection in automated assembly lines - Paper detection in printers and copiers - Position sensing in robotics and automation systems - Slot detection in vending machines and gaming equipment
Detailed and Complete Alternative Models
Some alternative models to the OPB844B include: - OPB847B: Similar functionality with enhanced ambient light rejection - OPB848B: Higher sensitivity and wider operating temperature range - OPB849B: Integrated digital output for simplified interfacing
In conclusion, the OPB844B photo interrupter sensor offers reliable object detection capabilities in a compact and versatile package, making it suitable for a wide range of industrial and commercial applications.
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What is OPB844B?
- OPB844B is a reflective object sensor that consists of an infrared LED and a phototransistor, designed for use in applications requiring non-contact sensing.
What are the typical applications of OPB844B?
- OPB844B is commonly used in applications such as paper detection in printers, edge detection in robotics, and object detection in industrial automation.
What is the operating voltage range of OPB844B?
- The operating voltage range of OPB844B is typically between 4.5V and 5.5V.
How does OPB844B detect objects?
- OPB844B detects objects by emitting infrared light from the LED and then measuring the amount of light reflected back to the phototransistor. When an object is present, it interrupts the light beam, causing a change in the phototransistor's output.
What is the sensing distance of OPB844B?
- The sensing distance of OPB844B is typically up to a few millimeters, depending on the reflectivity of the object being detected.
Can OPB844B be used in outdoor environments?
- OPB844B is not recommended for outdoor use as it is optimized for indoor ambient light conditions.
What is the response time of OPB844B?
- The response time of OPB844B is typically in the range of microseconds, making it suitable for high-speed sensing applications.
Does OPB844B have any built-in signal conditioning?
- Yes, OPB844B has built-in signal conditioning to provide a digital output, making it easier to interface with microcontrollers and other digital systems.
Is OPB844B sensitive to ambient light?
- OPB844B is designed to minimize the effects of ambient light through its modulation scheme and optical filtering.
Can OPB844B be used in harsh industrial environments?
- OPB844B can be used in industrial environments, but care should be taken to protect it from dust, moisture, and extreme temperatures to ensure reliable operation.