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.1 11/06
Page 1 of 4
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Reflective Object Sensor
OPB706A, OPB706B, OPB706C
OPB707A, OPB707B, OPB707C
Features:
• Choice of Phototransistor (OPB706) or
Photodarlington (OPB707) output
• Unfocused for sensing diffuse surface
• Low cost plastic housing
• Designed for use with PCBoards or connectors
Description:
The OPB706 consists of an infrared Light Emitting Diode (LED) and an NPN silicon Phototransistor mounted
“side-by-side” on parallel axes in a black plastic housing. The OPB707 consists of an infrared LED and an NPN
silicon Photodarlington mounted “side-by-side” on parallel axes in a black plastic housing.
On both OPB706 and OPB707, the LED and Phototransistor / Photodarlington are molded using dark infrared
transmissive plastic to reduce ambient light noise. The Phototransistor / Photodarlington responds to light from
the emitter when a reflective object passes within its field of view of the device.
Custom electrical, wire and cabling and connectors are available. Contact your local representative or OPTEK
for more information.
Product Photo Here
Pin # LED Pin # Transistor
3 Anode 1 Collector
4 Cathode 2 Emitter
3
4
1
2
OPB706
OPB707
3
4
1
2
Applications:
• Non-contact reflective object sensor
• Assembly line automation
• Machine automation
• Machine safety
• End of travel sensor
• Door sensor
Part
Number LED Peak
Wavelength
Sensor Reflection
Distance Lead Length /
Spacing
OPB706A
935 nm
Transistor
0.050"
(1.27mm)
OPB706B
OPB706C
OPB707A
Darlington
OPB707B
OPB707C
0.45" / 0.087",
0.100"
RoHS
DIMENSIONS ARE IN:
INCHES
[ MILLIMETERS]
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 A1 11/06
Page 2 of 4
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Notes:
(1) RMA flux is recommended. Duration can be extended to 10 seconds maximum when flow soldering.
(2) Derate linearly 1.25 mW/°C above 25 ° C.
(3) Derate linearly 1.67 mW/°C above 25 ° C.
Reflective Object Sensor
OPB706A, OPB706B, OPB706C
OPB707A, OPB707B, OPB707C
Absolute Maximum Ratings (TA=25°C unless otherwise noted)
Storage and Operating Temperature Range -40° C to +85° C
Lead Soldering Temperature [1/16 inch (1.6mm) from the case for 5 sec. with soldering iron](1) 260° C
Input Diode
Forward DC Current 50 mA
Peak Forward Current (1 µs pulse width, 300 pps) 3 A
Reverse DC Voltage 2 V
Power Dissipation(2) 75 mW
Output Phototransistor (OPB706) | Output Photodarlington (OPB707)
Collector-Emitter Voltage
OPB706
OPB707
24 V
15 V
Emitter-Collector Voltage 5 V
Collector DC Current
OPB706
OPB707
25 mA
125 mA
Power Dissipation
OPB706(2)
OPB707(3)
75 mW
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.1 11/06
Page 3 of 4
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Notes:
(1) Crosstalk (ICX) is the collector current measured with the indicated current in the input diode and with no reflecting surface.
(2) The distance from the assembly face to the reflective surface is “d”.
(3) Measured using Eastman Kodak neutral white test card with 90% diffuse reflectance as a reflecting surface. Reference:
Eastman Kodak, Catalog #E 152 7795.
(4) Lower curve is a calculated worst case condition rather than the conventional -2 Ω limit.
(5) All parameters tested using pulse techniques.
Reflective Object Sensor
OPB706A, OPB706B, OPB706C
OPB707A, OPB707B, OPB707C
Electrical Characteristics (TA=25°C unless otherwise noted)
SYMBOL PARAMETER MIN TYP MAX UNITS TEST CONDITIONS
Input Diode (see OP165W for additional information)
VF Forward Voltage - - 1.7 V IF = 20 mA
IR Reverse Current - - 100 μA VR = 2 V
Output Phototransistor (see OP505W for additional information) | Photodarlington (see OP535 for additional information)
V(BR)CEO
Collector-Emitter Brealdown Voltage
OPB706
OPB707
24
15
-
-
-
-
V IC = 100 µA
V(BR)ECO Emitter-Collector Breakdown Voltage 5 - - V IE = 100 µA
ICEO
Collector Dark Current
OPB706
OPB707
-
-
-
-
100
250
nA VCE = 5 V, IF = 0, EE ≤ 0.1 µW/cm2
Combined
ICX
Crosstalk
OPB706
OPB707
-
-
-
-
200
10
mA
µA
IF = 20 mA, VCE = 5 V, No reflecting surface(1)
IC(ON)
On-State Collector Current
OPB706A
OPB706B
OPB706C
500
350
250
-
-
-
-
-
-
µA
IF = 20 mA, VCE = 5V , d = 0.05” (1.27 mm)(2) (3)
OPB707A
OPB707B
OPB707C
25
17
10
-
-
-
-
-
-
mA
VCE(SAT)
Collector-Emitter Saturation Voltage
OPB706
OPB707
0.4
1.1
-
-
-
-
V
IF = 20 mA, d = 0.05” (1.27 mm)(2) (3)
IC(ON) = 100µA
IC(ON) = 2 mA
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 A1 11/06
Page 4 of 4
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPB706 - Output Curr ent vs Forward Current
vs Temperature
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0 5 10 15 20 25 30 35 40 45 50
Forward Current - mA
Normalized Output Current
-40° C
-20° C
0° C
20° C
40° C
60° C
80° C
Normalized at IF = 20mA at 20°C, VCC =
5V
i K d k 90% t Di t 0 050"
Reflective Object Sensor
OPB706A, OPB706B, OPB706C
OPB707A, OPB707B, OPB707C
OPB706 - Normalized Collector Current
vs. Object Distance
0.0
0.2
0.4
0.6
0.8
1.0
1.2
0.0 0.2 0.4 0.6 0.8 1.0
Distance to Reflective Surface (inches)
Normalized Output Current
Kodak 90%
Kodak 19%
Copy Paper
Avery
Retro Reflective
V
CE
= 5V, I
F
= 20mA, Normalized at 0.050" Kodak 90%
OPB707 - Normalized Collector Current
vs. Object Distance
0.0
0.2
0.4
0.6
0.8
1.0
1.2
0.0 0.2 0.4 0.6 0.8 1.0
Distance to Reflective Surface (inches)
Normalized Output Current
Kodak 90%
Kodak 18%
Copy Paper
Avery
Retro Reflective
V
CE
= 5V, I
F
= 20mA, Normalized at 0.050" Kodak 90%
OPB707 - Output Current vs Forward Current
vs Temperature
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0 5 10 15 20 25 30 35 40 45 50
Forward Current - mA
Normalized Output Current
-40° C
-20° C
0° C
20° C
40° C
60° C
80° C
Normalized at IF = 20mA at 20°C, VCC = 5V
using Kodak 90% at Distance = 0.050" (1.27mm)
