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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 C 10/11

Page 1 of 6

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

OPB708, OPB709

OPB740 Series, OPB740WZ Series

Description:

Each reflective object sensor in the OPB708, OPB709, OPB740 through OPB746 and OPB740WZ through

OPB746WZ series consists of an infrared emitting diode and a NPN silicon phototransistor or a photodarlington.

The OPB747WZ and OPB748WZ consist of a Red visible LED and a low light level rejection (R

) NPN silicon

phototransistor. The Red LED allows better contrast ratio when detecting Black marks on a White surface. All

these devices are mounted side-by-side on converging optical axes in a black plastic housing focusing on a small

area and depth of field.

OPB7 _ _ WZ series are wired (UL approved wire) devices that offer various lens options, including no windows,

blue polysulfone windows for dust protection or opaque aperture windows with offset openings for improved target

resolution.

On each sensor included in this data sheet, the photosensor responds to radiation only when a reflective object

passes within its field of view.

Custom IC(ON) current binning, special wire lengths and connectorization is available through your OPTEK rep.

Features:

• Focused for maximum sensitivity

• Phototransistor or photodarlington output

• Crosstalk does not exceed specified ICEO

• 24” (610 mm) wire length

• 26 AWG wire size

Product Photo Here

Applications:

• Non-contact reflective object sensor

• Assembly line automation

• Machine automation

• Machine safety

• End of travel sensor

• Door sensor

• Thermal Paper Mark

OPB7_ _WZ

Series

OPB708,

OPB709,

OPB740,

OPB745

Series

Part

Number

LED Peak

Wavelength

Sensor

Reflection

Distance

Inch (mm)

Lead Length/

Wire Type

OPB708

935 nm

Transistor

Min=0.08” [2.04mm]

Typ=0.15" [3.81mm]

Max=0.30” [7.62mm]

0.150"

Minimum

OPB709 Darlington

OPB740

890 nm

Transistor

OPB741

OPB742

OPB743

OPB744

OPB745 Darlington

OPB740WZ

Transistor

24" / 26

AWG Wire

OPB741WZ

OPB742WZ

OPB743WZ

OPB744WZ

OPB745WZ Darlington

OPB746WZ 935 nm

OPB747WZ

645nm

OPB748WZ Transistor

Transistor

CONTAINS POLYSULFONE

To avoid stress cracking, we suggest using

ND Industries’ Vibra-Tite for thread-locking.

Vibra-Tite evaporates fast without causing structural

failure in OPTEK’s molded plastics.

Applies to: OPB460, OPB470, OPB480, OPB490.

RoHS

Summary of content (6 pages)

PAGE 1
Reflective Object Sensor OPB708, OPB709 OPB740 Series, OPB740WZ Series OPB708, OPB709, OPB740, OPB745 Series Features: • • • • • Focused for maximum sensitivity Phototransistor or photodarlington output Crosstalk does not exceed specified ICEO 24” (610 mm) wire length 26 AWG wire size Product Photo Here OPB7_ _WZ Series Description: Each reflective object sensor in the OPB708, OPB709, OPB740 through OPB746 and OPB740WZ through OPB746WZ series consists of an infrared emitting diode and a NPN silicon ph
PAGE 2
Reflective Object Sensor OPB708, OPB709 OPB740 Series, OPB740WZ Series OPB708, OPB709, OPB740, OPB741, OPB742, OPB743, OPB744, OPB745 [ MILLIMETERS] DIMENSIONS ARE IN: INCHES OPB740WZ, OPB741WZ, OPB742WZ, OPB743WZ, OPB744WZ, OPB745WZ, OPB746WZ, OPB747WZ, OPB748WZ OPB746WZ, OPB747WZ, OPB708 OPB740 thru OPB744 OPB709, OPB745, Color-PIN # LED Color-PIN # Transistor Orange-1 Anode White-4 Collector Green-2 Cathode Blue-3 Emitter Package Style Part Number Lens Configuration OPB708 D - No wi
PAGE 3
Reflective Object Sensor OPB708, OPB709 OPB740 Series, OPB740WZ Series Absolute Maximum Ratings (TA=25°C unless otherwise noted) Operating and Storage Temperature Range OPB708, OP709, OPB740, OPB741, OPB742, OPB743, OPB744, OPB745 -40° C to +85° C OPB741WZ, OPB742WZ, OPB743WZ, OPB744WZ, OPB745WZ, OPB746WZ, OPB747WZ, OPB748WZ -40° C to +80° C Lead Soldering Temperature [1/16 inch (1.6mm) from the case for 5 sec.
PAGE 4
Reflective Object Sensor OPB708, OPB709 OPB740 Series, OPB740WZ Series Electrical Characteristics (TA = 25°C unless otherwise noted) SYMBOL PARAMETER MIN TYP MAX UNITS TEST CONDITIONS Output RBE Phototransistor (See OP705 for general information — for reference only) V(BR)CEO ICEO Collector-Emitter Breakdown Voltage Collector Dark Current 24 - - V IC = 100 µA - - 100 nA VCE = 10 V, IF = 0, EE =0 Output Phototransistor (See OP505 for general information — for reference only) V(BR)CEO Col
PAGE 5
Reflective Object Sensor OPB708, OPB709 OPB740 Series, OPB740WZ Series LED Forward Voltage vs Forward Current vs Temperature Transistor Outputvsvs Distance OPB708 - Output Distance 1.50 1.40 Normalized at 0.150" Kodak 90% 1.40 Kodak 90% Kodak 19% Copier Paper Avery Label Retro Material 1.00 Typical Forward Voltage Normalized Output (volts) 1.20 0.80 0.60 0.40 1.30 1.20 -40° C 1.10 -20° C 0° C 20° C 40° C 1.00 0.20 60° C 80° C 0.90 0.00 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.
PAGE 6
Reflective Object Sensor OPB708, OPB709 OPB740 Series, OPB740WZ Series LED Forward Voltage vs Forward Current vs Temperature Darlington vsDistance Distance OPB709 -Output Output vs 1.40 1.50 Normalized at 0.150" Kodak 90% 1.40 Kodak 90% Kodak 19% Copier Paper Avery Label Retro Material 1.00 Typical Forward Voltage Normalized Output (volts) 1.20 0.80 0.60 0.40 1.30 1.20 -40° C 1.10 -20° C 0° C 20° C 40° C 1.00 0.20 60° C 80° C 0.00 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.