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H21B3 - PHOTODARLINGTON OPTICAL INTERRUPTER SWITCH

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.

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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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.
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