Vishay’s new TCNT2000 is a reflective optical sensor with transistor output in a miniature SMD package. Measuring just 3,4 by 2,7 by 1,5 mm, it offers a detection range from 0,2 mm to 5 mm for consumer, industrial and computer applications.
By utilising Vishay’s high-efficiency 940 nm emitter chip, the sensor provides a typical CTR of 4, providing designers with the option of increasing the detection range or driving the device at lower drive currents to reduce power consumption without incurring performance losses.
The TCNT2000 features a compact construction with its emitting light source and silicon phototransistor detector arranged in the same plane. The sensor’s analog output signal is triggered by detection of reflected infrared light from objects 0,2 mm to 5 mm away (within >20% of peak collector current).
The device offers a built-in daylight blocking filter, which greatly suppresses disturbing ambient light to increase the signal-to-noise ratio, while keeping the maximum spectral sensitivity at the operating wavelength of 940 nm.
The TCNT2000 is designed for optical encoding and switching in industrial metering systems, computer disk drives and consumer devices such as DVD players. In addition, it serves as an accurate position sensor for shaft encoders and is suitable for office equipment such as copy machines, printers and fax machines.
The sensor offers a typical output current under test of 0,8 mA. It operates over a temperature range of –40°C to +85°C and is lead-free reflow solderable according to J-STD-020 profile. The device is RoHS compliant.
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