Vishay Surface Reflective Optical Sensor, Phototransistor Output, Surface Mount Package, 2.5x2x0.8mm, 940 nm VCNT2020

Vishay VCNT2020 Surface Reflective Optical Sensor is a miniature reflective sensor designed for precise object detection in electronic and industrial applications. The sensor integrates a silicon phototransistor detector and an infrared emitter operating at 940 nm wavelength within a small surface mount device (SMD) package sized 2.5 x 2 x 0.8 mm. Its compact construction aligns the light source and detector in the same plane, optimizing reflective sensing capabilities.

This reflective optical sensor produces an analog output signal proportional to the reflected infrared light intensity detected from nearby objects within a range of 0.2 mm to 2.5 mm, enabling high accuracy proximity and position sensing. A built-in daylight blocking filter effectively reduces interference from ambient light sources, enhancing detection reliability and signal-to-noise ratio.

The VCNT2020 supports rapid switching with a typical rise time of 10 microseconds and a fall time of 15 microseconds, suitable for high-speed applications. It is housed in a surface mount package with 4 pins, facilitating easy integration onto printed circuit boards with tape and reel packaging for automated assembly lines.

Operating temperature spans from -25°C to +85°C, allowing use in demanding industrial, automation, optical encoder, printer, and copier systems. Typical applications include position sensing, optical switches, and optical encoders such as discs and tape drives for DVD and camera equipment. Object detection capabilities make it suitable for paper presence sensing in printing and copying devices.

The sensor emits infrared light at 940 nm for effective reflective detection. Its small form factor allows installation in compact electronic assemblies. Phototransistor output provides analog photo current response for accurate signal processing.

Integrated daylight filter suppresses ambient light interference. High-speed response with 10 μs rise and 15 μs fall times improves sensor performance. Reliable operation within a wide temperature range from -25°C to +85°C.

Tape and reel packaging supports mass production assembly. Surface mount installation supports modern PCB layouts. Ideal for industrial, manufacturing, and consumer electronics applications. Enhances automation and optical measurement systems with precise proximity sensing.

Explore Vishay products and similar Reflective Optical Sensors on EnvMart for advanced electronics solutions.