H21B1 Datasheet, PDF (1/6 Pages) QT Optoelectronics – SLOTTED OPTICAL SWITCH

PHOTODARLINGTON
OPTICAL INTERRUPTER SWITCH
H21B1
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)
CL
.295 (7.5)
.272 (6.9)
0.315 (8.0)
0.110 (2.8)
0.091 (2.3)
2
3
1
4
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 specified.
H21B2
H21B3
SCHEMATIC
4
1
2
3
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. 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 I_C(ON)
© 2002 Fairchild Semiconductor Corporation
Page 1 of 6
6/13/02