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H21B1 - PHOTODARLINGTON OPTICAL INTERRUPTER SWITCH

General Description

The H21B1, H21B2 and H21B3 consist of a gallium arsenide infrared emitting diode coupled with a silicon photodarlington in a plastic housing.

The packaging system is designed to optimize the mechanical resolution, coupling efficiency, ambient light rejection, cost and reliability.

Key Features

  • Opaque housing.
  • Low cost.
  • .035" apertures.
  • High IC(ON) © 2002 Fairchild Semiconductor Corporation Page 1 of 6 6/13/02.

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Other Datasheets by Fairchild (onsemi)

Part Number Description
H21B2 PHOTODARLINGTON OPTICAL INTERRUPTER SWITCH
H21B3 PHOTODARLINGTON OPTICAL INTERRUPTER SWITCH
H21B4 PHOTODARLINGTON OPTICAL INTERRUPTER SWITCH
H21B5 PHOTODARLINGTON OPTICAL INTERRUPTER SWITCH
H21B6 PHOTODARLINGTON OPTICAL INTERRUPTER SWITCH

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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PHOTODARLINGTON OPTICAL INTERRUPTER SWITCH H21B1 PACKAGE DIMENSIONS 0.972 (24.7) 0.957 (24.3) H21B2 H21B3 0.472 (12.0) 0.457 (11.6) C L Ø 0.133 (3.4) Ø 0.126 (3.2) (2X) 0.249 (6.35) 0.243 (6.15) + E D + C L 0.39 (1.00) 0.34 (0.85) 0.755 (19.2) 0.745 (18.9) 0.129 (3.3) 0.119 (3.0) 0.103 (2.60) NOM 0.433 (11.0) 0.422 (10.7) Optical C L 0.125 (3.2) 0.119 (3.0) C L .295 (7.5) .272 (6.9) 0.315 (8.0) SCHEMATIC 0.110 (2.8) 0.091 (2.3) 2 1 3 4 PIN 1 ANODE PIN 2 CATHODE PIN 3 COLLECTOR PIN 4 EMITTER 0.020 (0.51) (SQ) 1 4 NOTES: 1. Dimensions for all drawings are in inches (mm). 2. Tolerance of ± .010 (.25) on all non-nominal dimensions unless otherwise specified.