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H21A2 - Photointerrupters

Download the H21A2 datasheet PDF. This datasheet also covers the H21A1 variant, as both devices belong to the same photointerrupters family and are provided as variant models within a single manufacturer datasheet.

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 H21A2
Manufacturer ISOCOM
File Size 2.59 MB
Description Photointerrupters
Datasheet download datasheet H21A2 Datasheet

📁 Similar Datasheet

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H21A2 PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH Fairchild Semiconductor
H21A2 SLOTTED OPTICAL SWITCH QT Optoelectronics
H21A PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH Fairchild Semiconductor
H21A1 SLOTTED OPTICAL SWITCH QT Optoelectronics
H21A1 PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH Fairchild Semiconductor

Other Datasheets by ISOCOM

Part Number Description
H21A1 Photointerrupters
H21A3 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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