Transmissive Sensor
HOA1872
DESCRIPTION
FEATURES
Choice of phototransistor or photodarlington
output
Three sensitivity ranges
Choice of metal can package or plastic molded
components
0.100 in.(2.54 mm) slot width
The HOA1872 series consists of an infrared emitting
diode facing an NPN silicon phototransistor
(HOA1872- 001, - 002, - 011, - 012) or photodarlington
(HOA1872- 003, - 013) encased in a black thermoplastic
housing. Detector switching takes place wherever an
opaque object passes through the slot between emitter
and detector. The HOA1872- 001, - 002 and - 003 have
a 0.050 in.(1.27 mm)dia. detector aperture and employ
metal can packaged components, while the
HOA1872- 011, - 012, and - 013 have a 0.060 in.(1.52
mm) dia. detector aperture and contain plastic molded
components. For additional component information see
SE1450, SD1440, SD1410, SEP8506, SDP8406, and
SDP8106.
Housing material is polyester. Housings are soluble in
chlorinated hydrocarbons and ketones. Recommended
cleaning agents are methanol and isopropanol.
.250(6.36)
.125(3.18)
A
K
E C
L
C
OPTICAL
.500(12.70)
.200(5.10)
.100(2.54)
.100(2.54)
.050(1.27)
.300(7.62)
.300(7.62) MIN.
.175(4.45)
.425(10.80)
.350(8.89)
~ ~
~~
+
S
+
E
.020(0.51) DIA FOR -001 THRU -003
.020(0.51) SQ FOR -011 THRU -013
DIM_044.ds4
INFRA-14.TIF
OUTLINE DIMENSIONS in inches (mm)
3 plc decimals
0.010(0.25)
Tolerance
2 plc decimals
0.020(0.51)
Honeywell reserves the right to make
changes in order to improve design and
supply the best products possible.
h
286
Transmissive Sensor
HOA1872
ELECTRICAL CHARACTERISTICS
UNITS
TEST CONDITIONS
MIN
PARAMETER
SYMBOL
TYP
MAX
IR EMITTER
DETECTOR
COUPLED CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS
(25C Free-Air Temperature unless otherwise noted)
ABSOLUTE MAXIMUM RATINGS (continued)
Operating Temperature Range
HOA1872-001, -002, -003
-55C to 100C
HOA1872-011, -012, -013
-40C to 85C
Storage Temperature Range
HOA1872-001, -002, -003
-55C to 125C
HOA1872-011, -012, -013
-40C to 85C
Soldering Temperature
HOA1872-001, -002, -003
260C (10 sec.)
HOA1872-011, -012, -013
240C (5 sec.)
IR EMITTER
Power Dissipation
HOA1872-001, -002, -003
75 mW
HOA1872-011, -012, -013
100 mW
Reverse Voltage
3 V
Continuous Forward Current
50 mA
DETECTOR
TRANS.
DARLINGTON
Collector-Emitter Voltage
30 V
15 V
Emitter-Collector Voltage
5 V
5 V
Power Dissipation
HOA1872-001, -002, -003
75 mW []
75 mW []
HOA1872-011, -012, -013
100 mW [] 100 mW []
Collector DC Current
30 mA
30 mA
Notes
1. Derate linearly at 0.71 mW/C above 25C.
2. Derate linearly at 0.78 mW/C above 25C.
Honeywell reserves the right to make
changes in order to improve design and
supply the best products possible.
h
287
Transmissive Sensor
HOA1872
SCHEMATIC
sch_027.cdr
IRED Forward Bias Characteristics
gra_092.ds4
Forward voltage - V
F
o
r
w
a
r
d
c
u
r
r
e
n
t
-
m
A
0
10
20
30
40
50
60
70
80
90
100
0.8
1.0
1.2
1.4
1.6
1.8
2.0
Pulsed
condition
T
A
= 25 C
T
A
= 80 C
T
A
= -40 C
Fig. 1
Non-Saturated Switching Time vs
Load Resistance
gra_096.ds4
Load resistance - Ohms
R
e
s
p
o
n
s
e
t
i
m
e
-
s
1
10
100
1000
10
100
1000
10000
Phototransistor
Photodarlington
Fig. 2
Dark Current vs
Temperature
gra_301.cdr
Fig. 3
Collector Current vs
Ambient Temperature
gra_095.ds4
Free-air temperature - C
N
o
r
m
a
l
i
z
e
d
c
o
l
l
e
c
t
o
r
c
u
r
r
e
n
t
0.0
0.6
1.2
-50
0.4
0.2
0.8
1.0
-25
0
25
50
100
75
Fig. 4
All Performance Curves Show Typical Values
Honeywell reserves the right to make
changes in order to improve design and
supply the best products possible.
h
288
Transmissive Sensor
HOA1872
Honeywell reserves the right to make
changes in order to improve design and
supply the best products possible.
h
289
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