Non-contact 4x3x2mm IR sensor responds at up to 4mm

May 11, 2016 // By Julien Happich
Everlight's ITR1502 series of reflector type photo interrupter can sense an object and give signal response at a distance up to 4mm and at a speed of 20μs, in contrast to a usual distance of 0.5 to 1.0mm.

The device which is MSL3 rated for moisture sensitive SMD components, consists of an infrared emitting diode and an NPN silicon phototransistor that provides non-contact sensing. The product operates with a standard wavelength of 940nm, drawing a maximum current of 450μA at 2V. A unique double molding manufacturing process, combining transfer and injection molding, makes the end product more rugged, and the compact package effectively blocks visible light and minimizes false detection.
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