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H21A3 - Photointerrupters

Download the H21A3 datasheet PDF (H21A1 included). The manufacturer datasheet provides complete specifications, pinout details, electrical characteristics, and typical applications for photointerrupters.

Description

The H21Ax and H22Ax series of opaque photointerrupters are single channel switches consisting of a Gallium Arsenide infrared emitting diode and a NPN silicon photo transistor mounted in a polycarbonate housing.

Features

  • High Gain.
  • 3mm Gap between LED and Detector.
  • Polycarbonate Case Protection against Ambient Light.
  • Pb Free and RoHS Compliant.
  • Safety Approvals Pending.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (H21A1-ISOCOM.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number H21A3
Manufacturer ISOCOM
File Size 2.59 MB
Description Photointerrupters
Datasheet download datasheet H21A3 Datasheet

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Other Datasheets by ISOCOM
  • H21A1 - Photointerrupters
  • H21A2 - Photointerrupters

Full PDF Text Transcription

Click to expand full text
ISOCOM COMPONENTS H21Ax, H22Ax DESCRIPTION The H21Ax and H22Ax series of opaque photointerrupters 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 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 the infrared emitting diode and the photo sensor, switching the output from an "ON" state to an "OFF" state. These photoinerrupters are in PWB mounting packages while H21Ax also provides flanges for Screw Mounting.
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