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Fairchild Semiconductor - PHOTODARLINGTON OPTICAL INTERRUPTER SWITCH

Numéro de référence H21B5
Description PHOTODARLINGTON OPTICAL INTERRUPTER SWITCH
Fabricant Fairchild Semiconductor 
Logo Fairchild Semiconductor 





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H21B5 fiche technique
PHOTODARLINGTON
OPTICAL INTERRUPTER SWITCH
H21B4
PACKAGE DIMENSIONS
0.249 (6.35)
0.243 (6.15)
0.972 (24.7)
0.957 (24.3)
0.472 (12.0)
0.457 (11.6)
CL
+D
E+
0.755 (19.2)
0.745 (18.9)
Ø 0.133 (3.4)
Ø 0.126 (3.2)
(2X)
CL
0.39 (1.00)
0.34 (0.85)
0.103 (2.60) NOM
0.129 (3.3)
0.119 (3.0)
0.433 (11.0)
0.422 (10.7)
Optical
CL
0.125 (3.2)
0.119 (3.0)
.295 (7.5)
.272 (6.9)
CL
0.315 (8.0)
0.110 (2.8)
0.091 (2.3)
23
14
PIN 1 ANODE
PIN 2 CATHODE
PIN 3 COLLECTOR
PIN 4 EMITTER
0.020 (0.51) (SQ)
NOTES:
1. Dimensions for all drawings are in inches (mm).
2. Tolerance of ± .010 (.25) on all non-nominal dimensions unless
otherwise specied.
H21B5
H21B6
SCHEMATIC
4
1
23
DESCRIPTION
The H21B4, H21B5 and H21B6 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 rejec-
tion, cost and reliability. The gap in the housing provides a means of interrupting the signal with an opaque material, switching the
output from an “ON” to an “OFF” state.
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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