Isocom Componen H21A1. Photo Interrupter Trans Missive Phototransistor 4-Pin Rail, 3.3 mm
Isocom Componen H21A1. Photo Interrupter Trans Missive Phototransistor 4-Pin Rail, 3.3 mm
The H21A Series of opaque photo interrupters are single channel switches consisting of a gallium arsenide Infrared emitting diode and a NPN silicon photo transistor mounted in a polycarbonate housing. The package is designed to optimize the mechanical resolution, coupling efficiency, ambient light rejection, cost and reliability. Operating on the principle that objects opaque to Infrared will interrupt the transmission of light between an Infrared emitting diode and a photo sensor switching the output from an "on" state to an "off" state.
- High gain
- 3mm gap between LED and detector
- Polycarbonate case protected against ambient light
- Forward current: 50mA
- Reverse Voltage: 5V