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H21A4

Fairchild Semiconductor
Part Number H21A4
Manufacturer Fairchild Semiconductor
Description PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH
Published Mar 22, 2005
Detailed Description PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH H21A4 PACKAGE DIMENSIONS 0.972 (24.7) 0.957 (24.3) 0.472 (12.0) 0.457 (11.6) ...
Datasheet PDF File H21A4 PDF File

H21A4
H21A4


Overview
PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH H21A4 PACKAGE DIMENSIONS 0.
972 (24.
7) 0.
957 (24.
3) 0.
472 (12.
0) 0.
457 (11.
6) C L 0.
249 (6.
35) 0.
243 (6.
15) + E D + H21A5 H21A6 Ø 0.
133 (3.
4) Ø 0.
126 (3.
2) (2X) 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 SCHEMATIC 0.
125 (3.
2) 0.
119 (3.
0) C L .
295 (7.
5) .
272 (6.
9) 0.
110 (2.
8) 0.
091 (2.
3) 0.
315 (8.
0) 1 4 2 1 3 4 PIN 1 ANODE PIN 2 CATHODE PIN 3 COLLECTOR PIN 4 EMITTER 0.
020 (0.
51) (SQ) 2 3 NOTES: 1.
Dimensions for all drawings are in inches (mm).
2.
Tolerance of ± .
010 (.
25) on all non-nominal dimensions unless otherwise specified.
DESCRIPTION The H21A series are 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 IC(ON)  2001 Fairchild Semiconductor Corporation DS300291 6/05/01 1 OF 4 www.
fairchildsemi.
com PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH H21A4 ABSOLUTE MAXIMUM RATINGS Parameter Operating Temperature Storage Temperature Soldering Temperature (Iron)(2,3 and 4) Soldering Temperature (Flow)(2 and 3) INPUT (EMITTER) Continuous Forward Current Reverse Voltage Power Dissipation (1) OUTPUT (SENSOR) Collector to Emitter Voltage Emitter to Collector Voltage Collector Current Power Dissipation (TC = 25°C)(1) (TA = 25°C unless otherwise specified) Symbol TOPR TSTG TSOL-I TSOL-F IF VR PD VCEO VECO IC PD Rating -55 to +100 -55 to +100 240 for 5 sec 260 for 10 sec 50 6 100 55 4.
5 20 150 Unit °C °C °C °C mA V mW V V mA mW H21A5 H21A6 NOTE: 1.
Derate power dissipation linearly 1.
67 mW/°C above 25°C.
2.
RMA flux is recommended.
3.
Met...


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