Transmissive Sensor
HOA1881
DESCRIPTION
FEATURES
Choice of phototransistor or photodarlington
output
0.060 in.(1.52 mm)dia. detector aperture
0.125 in.(3.18 mm) slot width
18.0 in.(457 mm) min. 22 AWG UL 1429 wire
leads
The HOA1881 series consists of an infrared emitting
diode facing an NPN silicon phototransistor
(HOA1881- 011, - 012) or photodarlington
(HOA1881- 013) encased in a black thermoplastic
housing. Detector switching takes place whenever an
opaque object passes through the slot between emitter
and detector. The lead wires of minimum length 18.0
in.(457 mm) provide alternate electrical connection
when PC board mounting is not possible. The HOA1881
series employs plastic molded components. For
additional component information see SEP8506,
SDP8406, and SDP8106.
Housing material is nylon. Housings are soluble in
chlorinated hydrocarbons and ketones. Recommended
cleaning agents are methanol and isopropanol.
Wire color code and functions are:
Black - IRED Anode
Orange - Detector Collector
Brown - IRED Cathode
Red - Detector Emitter
DIM_052.cdr
INFRA--9.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
314
Transmissive Sensor
HOA1881
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)
Operating Temperature Range
-40C to 85C
Storage Temperature Range
-40C to 85C
Soldering Temperature (5 sec)
240C
IR EMITTER
Power Dissipation
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
100 mW [] 100 mW []
Collector DC Current
30 mA
30 mA
SCHEMATIC
Honeywell reserves the right to make
changes in order to improve design and
supply the best products possible.
h
315
Transmissive Sensor
HOA1881
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
316
Transmissive Sensor
HOA1881
Honeywell reserves the right to make
changes in order to improve design and
supply the best products possible.
h
317
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