OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
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 .2 02/06
Page 1 of 3
Long Distance Reflective Switch
OPB732, OPB732WZ
OPB732
OPB732WZ
Description:
OPB732 uses an Infrared LED and Phototransistor in a reflective switch configuration. The assembly is offered
with either PCBoard through hole pins (OPB732) or 24
"
(610 mm), 26 AWG wires (OPB732WZ), and uses an
opaque housing to reduce the sensor
'
s ambient light sensitivity. The emitter and sensor are protected by a clear
window, providing a device that can operate in a dusty environment. The phototransistor can be configured as a
Common Collector or Common Emitter device.
While an object is in the reflective path of the device, light from the LED will be reflected back to the housing
irradiating 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 proportional to the
light striking the phototransistor. With the Infrared light from the LED not being reflected to the phototransistor, the
phototransistor turns
"
OFF,
"
minimizing the I
C(ON)
current.
Custom electrical, wire and cabling and connectors are available. Contact your local representative or OPTEK for
more information.
Features:
PC board mounting (OPB732)
24
"
(610 mm) 26 AWG wired with mounting tabs (OPB732WZ)
Non-contact infrared switch
Up to 1
"
or more reflective distance depending on circuitry
Product Photo Here
OPB732WZ
OPB732
RoHS
Ordering Information
Part
Number
LED Peak
Wavelength
Lead Length / Spacing
OPB732
850 nm
0.150
"
/ see diagram
OPB732WZ
24" / 26 AWG Wire
Pin #
LED
Green-1
Emitter
White-2
Collector
Red-3
Anode
Black-4
Cathode
3
4
2
1
Applications:
Non-contact reflective object sensor
Assembly line automation
Machine automation
Equipment security
Door sensor
Machine safety
End of travel sensor
Door sensor
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
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.2 02/06
Page 2 of 3
Long Distance Reflective Switch
OPB732, OPB732WZ
Electrical Characteristics
(T
A
= 25 C unless otherwise noted)
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.
(4) Distance = 1
"
(from front of package to a 90% diffuse reflective white card)
Absolute Maximum Ratings
(T
A
= 25
o
C unless otherwise noted)
Storage Temperature
-40
C to +100
C
Lead Soldering Temperature (1/16
"
(1.6mm) from case for 5 seconds with soldering iron)
(2)
260
C
Operating Temperature
-40
C to +85
C
SYMBOL
PARAMETER
MIN TYP MAX UNITS
CONDITIONS
Input LED (See OP240 for additional information, reference only)
V
F
Forward Voltage
-
-
1.8
V
I
F
= 20 mA
I
R
Reverse Current
-
-
100
A
V
R
= 2 V
Output Phototransistor (See OP550 for additional information, reference only)
V
(BR)CEO
Collector-Emitter Breakdown Voltage
30
-
-
V
I
C
= 100
A, E
E
= 0 mw/cm
2
I
CEO
Collector-Emitter Dark Current
-
-
100
nA
V
CE
= 10 V, E
E
= 0 mw/cm
2
Coupled
V
CE(SAT)
Collector-Emitter Saturation Voltage
(4)
-
-
0.4
V
I
C
= 250
A, I
F
= 30 mA , (4)
I
C(ON)
On-State Collector Current
(4)
0.25
-
-
mA
V
CE
= 1 V, I
F
= 30 mA, (4)
I
CX
Cross Talk
-
-
50
A
V
CE
= 5 V, I
F
= 30 mA,
No reflective surface
Collector-Emitter Voltage
30 V
Collector DC Current
50 mA
Power Dissipation
100 mW
LED
Output Photo Transistor
Forward Current
50 mA
Power Dissipation
100 mW
Reverse DC Voltage
3 V
Peak Forward current (2
s pulse width, 0.1% Duty Cycle)
1 A
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
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 .2 02/06
Page 3 of 3
Long Distance Reflective Switch
OPB732, OPB732WZ
Inverted
Output
Light
Drive
Ckt.
Drive
Ckt.
Light
Output
R
Light
D
Output
RL
Light
Output
Inverted
RL
D
R
D
R
RL
RD
RL
D
D
I
CC
R
V
=
LED
- V
L
L
I
CC
R
V
=
CE
- V
L
R
CE
CC
=
L
I
- V
V
LED
CC
R =
D
D
I
V
- V
- VCE
VCC
CC
V
CC
V
CC
V
EE
V
(GND)
EE
V
(GND)
EE
V
(GND)
EE
V
(GND)
I
L
L
R
- V
V
= CC
CE
ID
D
- V
R
V
= CC
LED
L
R
I
=
L
- V
CC
V
CE
- V
I
D=
R
D
CC
V
- VLED CE
Pulsed - Driver Circuits for LED & Phototransistor
DC
--
Drive Circuit for LED & Phototransistor
Pulsed
--
Drive Circuit for LED & Phototransistor
I
C(ON)
vs Distance (I
F
=30mA)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
Distance (inches)
Normalized at 1.00 inches
I
C(ON)
vs Distance (I
F
=30mA)
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