OPTEK Technology Inc. -- 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747
FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Issue A 05/05
Page 1 of 3
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Slotted Switch
OPB885Z
Features:
26 gauge wired assembly
Non-contact infrared switch
Opaque plastic housing
0.375" (9.525 mm) slot width
0.595" (15.113 mm) slot depth
Description:
OPB885 uses an Infrared LED and a phototransistor in a slotted switch configuration. The assembly has 24"
(609.600 mm) wires on each terminal and uses an opaque housing to reduce the sensor's ambient light
sensitivity. Each discrete has an 0.050" (1.270 mm) aperture that focuses the switching sensitivity and limits
ambient light absorption by the phototransistor. The housing is made from an opaque plastic with IR transmissive
plastic in the front of each aperture to provide dust protection.
The phototransistor can be configured as a common collector or common emitter device. When the gap is
unobstructed or has material that is transmissive to infrared light from the LED, the light will penetrate the housing
and aperture to irradiate the surface (base) of the phototransistor. When infrared light strikes the phototransistor,
the transistor becomes forward biased and is considered to be in the "on" state, providing an I
C(ON)
current that is
proportional to the light striking the phototransistor. As the light is blocked by using an opaque object that blocks
the infrared light from the LED to the phototransistor, the phototransistor turns "off," minimizing the I
C(ON)
current
and thus allowing the electrical state to be switched.
Product Photo Here
Applications:
Non-contact interruptive object
sensor
Assembly line automation
Machine automation
Equipment security
Machine safety
End of travel sensor
Door sensor
Pin #
Description
White-1 Collector
Green-2 Emitter
Red-3 Anode
Black-4 Cathode
Ordering Information
OPB885
Non-contact infrared switch
2 3
1 4
OPTEK Technology Inc. -- 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747
FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Issue A 05/05
Page 2 of 3
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Slotted Switch
OPB885Z
Electrical Characteristics
(T
A
= 25C unless otherwise noted)
SYMBOL PARAMETER MIN
TYP
MAX
UNITS
TEST
CONDITIONS
Input Diode
V
F
Forward
Voltage
- - 1.7 V I
F
= 20 mA
I
R
Reverse
Current
- - 100 A
V
R
= 3 V
Output Phototransistor
V
(BR)ECO
Collector-Emitter
Breakdown
Voltage 30 -
-
V I
C
= 100 A, I
F
= 0, E
E
= 0 mw/cm
2
I
CEO
Collector-Emitter Dark Current
-
-
100
nA
V
CE
= 10 V, I
F
= 0, E
E
= 0 mw/cm
2
Combined
V
CE(SAT)
Collector-Emitter
Saturation Voltage
-
-
0.6
V
I
C
= 1 mA, I
F
= 20 mA
I
C(ON)
On-State Collector Current
1.3
-
8.0
mA
V
CE
= 5 V, I
F
= 20 mA
Notes:
(1) All parameters tested using pulse technique.
(2) RMA flux is recommended. Duration can be extended to 10 seconds maximum when flow soldering.
(3) Methanol or isopropanol are recommended as cleaning agents. The plastic housing is soluble in chlorinated hydrocarbons and
keytones.
Absolute Maximum Ratings
(T
A
=25C unless otherwise noted)
Storage Temperature
-40 C to +100 C
Operating Temperature
-40 C to +85 C
Lead Soldering Temperature (1/16 inch (1.6mm) from the case for 5 sec. with soldering iron)
260 C
(2)
LED
Forward Current
50 mA
Peak Forward Current (2 s pulse width, 0.1% duty cycle)
1.0 A
Reverse DC Voltage
3.0 V
Power Dissipation
100 mW
Output Phototransistor
Collector-Emitter Voltage
30 V
Collector DC Current
50 mA
Power Dissipation
100 mW
OPTEK Technology Inc. -- 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747
FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Issue A 05/05
Page 3 of 3
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Slotted Switch
OPB885Z
Middle of Slot vs Output vs Distance
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0.000''
0.050''
0.100''
0.150''
0.200''
0.250''
Distance
R
e
lative O
u
tput Level
Right to Left
Left to Right
Top to Bottom
Middle of Slot vs Output vs Distance
Distance (inches)
Switching Flag Next to Emitter
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
0.000 0.025 0.050 0.075 0.100 0.125 0.150 0.175 0.200 0.225 0.250
Distance inches
Rel
a
tiv
e
Outpu
t
L
e
v
e
l
From Top
From Left
From Right
Switching Flag Next to Emitter
Distance (inches)
Switching Flag Next to Sensor
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
0.000 0.025 0.050 0.075 0.100 0.125 0.150 0.175 0.200 0.225 0.250
Distance inches
Re
la
tive
Out
put
Lev
e
l
From Top
From Left
From Right
Switching Flag Next to Sensor
Distance (inches)
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