Transmissive Sensor
HOA1887
DESCRIPTION
FEATURES
Choice of phototransistor or photodarlington
output
Side mount package
Ambient light and dust protective filter
Accurate position sensing
0.010 in.(0.25mm) aperture windows
0.125 in.(3.18 mm) slot width
24.0 in.(610 mm) min. 26 AWG UL 1429 wire
leads
The HOA1887 series consists of an infrared emitting
diode facing an NPN silicon phototransistor
(HOA1887- 011, - 012) or photodarlington
(HOA1887- 013) encased in a black thermoplastic
housing. Detector switching takes place whenever an
opaque object passes through the slot between emitter
and detector. The side mounting package is useful in
applications in which the interruptive element is parallel
to the mounting plane. Both emitter and detector have a
0.010 in.(0.25 mm) x 0.60 in(1.52 mm) vertical aperture.
This feature is ideal for use in applications in which
maximum position resolution is desired.
All devices employ a built- in strain relief for maximum
wire attachment strength. The sensor housing contains
IR transmissive optical windows. This arrangement
provides excellent protection against ambient light while
eliminating aperture openings which could be clogged
by airborne contaminants. The HOA1887 series
contains plastic molded components. For additional
component information see SEP8506, SDP8406, and
SDP8106.
Housing material is polycarbonate. Housings are
soluble in chlorinated hydrocarbons and ketones.
Recommended cleaning agents are methanol and
isopropanol.
Wire color and functions are:
Red - IRED Anode
Black - IRED Cathode
White - Detector Collector
dim_107.CDR
INFRA-89.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
338
Transmissive Sensor
HOA1887
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
339
Transmissive Sensor
HOA1887
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
Detector Dark Current vs
Temperature
gra_094.ds4
Free-air temperature - C
D
a
r
k
c
u
r
r
e
n
t
-
n
A
0.001
1
1000
-40
0.1
0.01
10
100
-20
0
20
40
60
V
CE
= 30
H = 0
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
340
Transmissive Sensor
HOA1887
Honeywell reserves the right to make
changes in order to improve design and
supply the best products possible.
h
341
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