PHOTOTRANSISTOR
OPTICAL INTERRUPTER SWITCH
H21A4 |
H21A5 |
H21A6 |
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PACKAGE DIMENSIONS
0.249 (6.35)
0.243 (6.15)
0.972 (24.7)
0.957 (24.3)
0.472 (12.0) |
Ø 0.133 (3.4) |
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Ø 0.126 (3.2) |
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0.457 (11.6) |
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(2X) |
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C |
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L |
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+ |
D |
C |
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L |
E |
+ |
0.39 (1.00) |
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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 |
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Optical |
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0.433 (11.0) |
C |
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L |
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0.422 (10.7) |
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0.125 (3.2) |
0.315 (8.0) |
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0.119 (3.0) |
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C |
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.295 (7.5) |
L |
0.110 (2.8) |
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.272 (6.9) |
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0.091 (2.3) |
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PIN 1 ANODE |
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PIN 2 CATHODE |
2 |
3 |
PIN 3 COLLECTOR |
1 |
4 |
PIN 4 EMITTER |
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0.020 (0.51) (SQ) |
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NOTES:
1.Dimensions for all drawings are in inches (mm).
2.Tolerance of ± .010 (.25) on all non-nominal dimensions unless otherwise specified.
DESCRIPTION
SCHEMATIC
1 |
4 |
2 |
3 |
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 |
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DS300291 |
6/05/01 |
1 OF 4 |
www.fairchildsemi.com |
PHOTOTRANSISTOR
OPTICAL INTERRUPTER SWITCH
H21A4 |
H21A5 |
H21A6 |
ABSOLUTE MAXIMUM RATINGS (TA = 25°C unless otherwise specified)
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Parameter |
Symbol |
Rating |
Unit |
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Operating Temperature |
TOPR |
-55 to +100 |
°C |
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Storage Temperature |
TSTG |
-55 to +100 |
°C |
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Soldering Temperature (Iron)(2,3 and 4) |
TSOL-I |
240 for 5 sec |
°C |
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Soldering Temperature (Flow)(2 and 3) |
TSOL-F |
260 for 10 sec |
°C |
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INPUT (EMITTER) |
IF |
50 |
mA |
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Continuous Forward Current |
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Reverse Voltage |
VR |
6 |
V |
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Power Dissipation (1) |
PD |
100 |
mW |
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OUTPUT (SENSOR) |
VCEO |
55 |
V |
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Collector to Emitter Voltage |
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Emitter to Collector Voltage |
VECO |
4.5 |
V |
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Collector Current |
IC |
20 |
mA |
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Power Dissipation (TC = 25°C)(1) |
PD |
150 |
mW |
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NOTE:
1.Derate power dissipation linearly 1.67 mW/°C above 25°C.
2.RMA flux is recommended.
3.Methanol or isopropyl alcohols are recommended as cleaning agents.
4.Soldering iron tip 1/16” (1.6mm) minimum from housing.
ELECTRICAL / OPTICAL CHARACTERISTICS (TA =25°C) (All measurements made under pulse conditions)
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PARAMETER |
TEST CONDITIONS |
SYMBOL |
DEVICES |
MIN |
TYP |
MAX |
UNITS |
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INPUT (EMITTER) |
IF = 60 mA |
VF |
All |
— |
— |
1.7 |
V |
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Forward Voltage |
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Reverse Breakdown Voltage |
IR = 10 µ A |
VR |
All |
6.0 |
— |
— |
µA |
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Reverse Leakage Current |
VR = 3 V |
IR |
All |
— |
— |
1.0 |
µA |
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OUTPUT (SENSOR) |
IF = 100 µ A, Ee = 0 |
BVECO |
All |
6.0 |
— |
— |
V |
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Emitter to Collector Breakdown |
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Collector to Emitter Breakdown |
IC = 1 mA, Ee = 0 |
BVCEO |
All |
55 |
— |
— |
V |
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Collector to Emitter Leakage |
VCE = 45 V, Ee = 0 |
ICEO |
All |
— |
— |
100 |
nA |
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COUPLED |
IF = 5 mA, VCE = 5 V |
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H21A4 |
0.15 |
— |
— |
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H21A5 |
0.30 |
— |
— |
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H21A6 |
0.60 |
— |
— |
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On-State Collector Current |
IF = 20 mA, VCE = 5 V |
IC(ON) |
H21A4 |
1.0 |
— |
— |
mA |
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H21A5 |
2.0 |
— |
— |
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H21A6 |
4.0 |
— |
— |
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IF = 30 mA, VCE = 5 V |
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H21A4 |
1.9 |
— |
— |
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H21A5 |
3.0 |
— |
— |
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H21A6 |
5.5 |
— |
— |
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Saturation Voltage |
IF = 20 mA, IC = 1.8 mA |
VCE(SAT) |
H21A5/6 |
— |
— |
0.40 |
V |
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IF = 30 mA, IC = 1.8 mA |
H21A4 |
— |
— |
0.40 |
V |
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Turn-On Time |
IF = 30 mA, VCC = 5 V, RL = 2.5 KΩ |
ton |
All |
— |
8 |
— |
µs |
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Turn-Off Time |
IF = 30 mA, VCC = 5 V, RL = 2.5 KΩ |
toff |
All |
— |
50 |
— |
µs |
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www.fairchildsemi.com |
2 OF 4 |
6/05/01 DS300291 |
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