H21A1 / H21A2 / H21A3
PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH
PACKAGE DIMENSIONS
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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0.249 (6.35) |
+ |
D |
C |
0.243 (6.15) |
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L |
E |
+ |
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0.39 (1.00) |
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0.34 (0.85) |
0.755 (19.2)
0.745 (18.9)
.073 (1.85) |
0.129 (3.3) |
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0.119 (3.0) |
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.133 (3.38) |
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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 |
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The H21A1, H21A2 and H21A3 consist of a |
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gallium arsenide infrared emitting diode |
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coupled with a silicon phototransistor in a |
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plastic housing. The packaging system is |
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designed to optimize the mechanical |
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resolution, coupling efficiency, ambient light |
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rejection, cost and reliability. The gap in the |
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housing provides a means of interrupting the |
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signal with an opaque material, switching the |
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output from an “ON” to an “OFF” state. SCHEMATIC |
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FEATURES |
1 |
4 |
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• Opaque housing |
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• Low cost |
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• .035” apertures |
2 |
3 |
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•High IC(ON)
1.Derate power dissipation linearly 1.33 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.
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 |
30 |
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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2001 Fairchild Semiconductor Corporation |
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DS300290 |
5/02/01 |
1 OF 5 |
www.fairchildsemi.com |
H21A1 / H21A2 / H21A3
PHOTOTRANSISTOR
OPTICAL INTERRUPTER SWITCH
ELECTRICAL / OPTICAL CHARACTERISTICS (TA =25°C)(All measurements made under pulse condition)
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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 |
— |
— |
V |
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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 |
30 |
— |
— |
V |
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Collector to Emitter Leakage |
VCE = 25 V, Ee = 0 |
ICEO |
All |
— |
— |
100 |
nA |
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COUPLED |
IF = 5 mA, VCE = 5 V |
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H21A1 |
0.15 |
— |
— |
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H21A2 |
0.30 |
— |
— |
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H21A3 |
0.60 |
— |
— |
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On-State Collector Current |
IF = 20 mA, VCE = 5 V |
IC(ON) |
H21A1 |
1.0 |
— |
— |
mA |
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H21A2 |
2.0 |
— |
— |
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H21A3 |
4.0 |
— |
— |
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IF = 30 mA, VCE = 5 V |
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H21A1 |
1.9 |
— |
— |
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H21A2 |
3.0 |
— |
— |
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H21A3 |
5.5 |
— |
— |
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Saturation Voltage |
IF = 20 mA, IC = 1.8 mA |
VCE(SAT) |
H21A2/3 |
— |
— |
0.40 |
V |
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IF = 30 mA, IC = 1.8 mA |
H21A1 |
— |
— |
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 5 |
5/02/01 DS300290 |
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