H21A Fairchild Semiconductor, H21A Datasheet
H21A
Manufacturer Part Number
H21A
Description
PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH
Manufacturer
Fairchild Semiconductor
Datasheet
1.H21A.pdf
(5 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
H21A3
Manufacturer:
FAIRCHILD/仙童
Quantity:
20 000
DS300290
INPUT (EMITTER)
OUTPUT (SENSOR)
NOTES:
1. Dimensions for all drawings are in inches (mm).
2. Tolerance of ± .010 (.25) on all non-nominal dimensions
ABSOLUTE MAXIMUM RATINGS
2001 Fairchild Semiconductor Corporation
Operating Temperature
Storage Temperature
Soldering Temperature (Iron)
Soldering Temperature (Flow)
Continuous Forward Current
Reverse Voltage
Power Dissipation
Collector to Emitter Voltage
Emitter to Collector Voltage
Collector Current
Power Dissipation (T
.073 (1.85)
.133 (3.38)
unless otherwise specified.
0.249 (6.35)
0.243 (6.15)
0.125 (3.2)
0.119 (3.0)
5/02/01
PACKAGE DIMENSIONS
.295 (7.5)
.272 (6.9)
0.972 (24.7)
0.957 (24.3)
(1)
Parameter
2
1
0.755 (19.2)
0.745 (18.9)
0.472 (12.0)
0.457 (11.6)
+
E
C
= 25°C)
C L
L C
D
+
3
4
0.129 (3.3)
0.119 (3.0)
(2,3 and 4)
(2 and 3)
(1)
0.020 (0.51) (SQ)
0.433 (11.0)
0.422 (10.7)
0.315 (8.0)
Ø 0.133 (3.4)
Ø 0.126 (3.2)
0.39 (1.00)
0.34 (0.85)
(2X)
PIN 1 ANODE
PIN 2 CATHODE
PIN 3 COLLECTOR
PIN 4 EMITTER
L C
(T
0.110 (2.8)
0.091 (2.3)
A
Optical
= 25°C unless otherwise specified)
C L
OPTICAL INTERRUPTER SWITCH
Symbol
T
T
1 OF 5
T
V
V
T
SOL-F
SOL-I
V
P
P
OPR
CEO
ECO
STG
I
I
F
C
R
D
D
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
4. Soldering iron tip
H21A1 / H21A2 / H21A3
FEATURES
• Opaque housing
• Low cost
• .035” apertures
• High I
DESCRIPTION
The H21A1, H21A2 and H21A3 consist of a
gallium arsenide infrared emitting diode
coupled with a silicon phototransistor 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.
agents.
C(ON)
260 for 10 sec
1/16”
240 for 5 sec
-55 to +100
-55 to +100
PHOTOTRANSISTOR
Rating
(1.6mm) minimum from housing.
100
150
4.5
50
30
20
6
www.fairchildsemi.com
2
1
SCHEMATIC
Unit
mW
mW
mA
mA
°C
°C
°C
°C
V
V
V
4
3
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H21A Summary of contents
Page 1
... C 2001 Fairchild Semiconductor Corporation DS300290 5/02/01 H21A1 / H21A2 / H21A3 OPTICAL INTERRUPTER SWITCH DESCRIPTION The H21A1, H21A2 and H21A3 consist of a gallium arsenide infrared emitting diode Ø 0.133 (3.4) Ø 0.126 (3.2) (2X) coupled with a silicon phototransistor in a plastic housing. The packaging system designed to optimize the mechanical ...
Page 2
... COUPLED On-State Collector Current Saturation Voltage mA, V Turn-On Time mA, V Turn-Off Time F www.fairchildsemi.com H21A1 / H21A2 / H21A3 OPTICAL INTERRUPTER SWITCH (T =25°C)(All measurements made under pulse condition) A TEST CONDITIONS SYMBOL ...
Page 3
... DS300290 5/02/01 H21A1 / H21A2 / H21A3 OPTICAL INTERRUPTER SWITCH Figure 1. Output Current vs. Input Current NORMALIZED PULSED P = 100 sec W PRR = 100 pps 100 I , INPUT CURRENT (mA) F Figure 2 ...
Page 4
... I = AMPS NORMALIZED LOAD RESISTANCE ( ) L www.fairchildsemi.com H21A1 / H21A2 / H21A3 OPTICAL INTERRUPTER SWITCH Figure 4. Leakage Current vs. Temperature DETECTOR NORMALIZED 0 100 25 ...
Page 5
... DS300290 5/02/01 H21A1 / H21A2 / H21A3 PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system affect its safety or effectiveness ...