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H21B4 Datasheet

Part NameDescriptionManufacturer
H21B4 1mm APERTURE OPTO-ELECTRONIC SINGLE CHANNEL SLOTTED INTERRUPTER SWITCHES WITH DARLINGTON SENSORS Isocom
Isocom  Isocom
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DESCRIPTION
The H21B_ and H22B_ series of opaque photointerrupters are single channel switches consisting of a Gallium Arsenide infrared emitting diode and a NPN silicon photo darlington mounted in a polycarbonate housing. The package is designed to optimise 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.

FEATURES
● High Gain
● 3mm Gap between LED and Detector
● Polycarbonate case protected against ambient light

APPLICATIONS
● Copiers, Printers, Facsimilies, Record Players, Casette Decks, Optoelectronic Switches

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