Reflective Object Sensor OPB708, OPB709, OPB740 Series, OPB740WZ Series
The OPB708, OPB709, OPB740 through OPB746, and OPB740WZ through OPB746WZ series are reflective object sensors. Each unit comprises an infrared emitting diode paired with either an NPN silicon phototransistor or a photodarlington. The OPB747WZ and OPB748WZ models feature a Red visible LED and a low light level rejection (RBE) NPN silicon phototransistor, offering enhanced contrast for detecting black marks on white surfaces. These sensors are housed in a black plastic enclosure with side-by-side components on converging optical axes, designed for focused detection within a specific area and depth of field. The OPB_WZ series includes UL-approved wiring and offers optional lens configurations such as no windows, blue polysulfone for dust protection, or opaque aperture windows with offset openings for improved target resolution. Custom options for IC(ON) current binning, wire lengths, and connectorization are available. These sensors are ideal for non-contact object detection in various automation and safety applications.
Product Attributes
- Brand: TT electronics plc
- Series: OPB708, OPB709, OPB740 Series, OPB740WZ Series, OPB740 through OPB746, OPB740WZ through OPB746WZ, OPB747WZ, OPB748WZ
- Housing Material: Black plastic
- Certifications: UL approved wire (for OPB_WZ series)
- RoHS: Yes
- Note on Polysulfone: CONTAINS POLYSULFONE - To avoid stress cracking, ND Industries Vibra-Tite is suggested for thread-locking. Applies to: OPB460, OPB470, OPB480, OPB490.
Technical Specifications
| Part Number | LED Peak Wavelength | Sensor Type | Reflection Distance (Inch [mm]) | Lead Length/Wire Type | LED Color | Lens Configuration | Collector-Emitter Voltage (V) | Emitter-Collector Voltage (V) | Power Dissipation (mW) | On-State Collector Current (mA) | Crosstalk (A) |
| OPB708 | 935 nm | Transistor | Min=0.08" [2.04 mm] Typ=0.15" [3.81 mm] Max=0.30" [7.62 mm] | 0.150" Minimum | Infrared | D - No windows | 30 | 5.0 | 100 | 0.01 - 3.00 | - |
| OPB709 | 935 nm | Darlington | 0.150" Minimum | Infrared | D - No windows | 15 | 5.0 | 100 | 1.00 - 26.0 | - | |
| OPB740 | 890 nm | Transistor | 0.150" Minimum | A - No windows | Infrared | 30 | 5.0 | 100 | 0.05 - 2.50 | - | |
| OPB740WZ | 890 nm | Transistor | 24" / 26 AWG Wire | A - No windows | Infrared | 30 | 5.0 | 100 | 0.05 - 2.50 | - | |
| OPB741 | 890 nm | Transistor | B - Blue windows | Infrared | 30 | 5.0 | 100 | 0.05 - 2.50 | - | ||
| OPB741WZ | 890 nm | Transistor | 24" / 26 AWG Wire | B - Blue windows | Infrared | 30 | 5.0 | 100 | 0.05 - 2.50 | - | |
| OPB742 | 890 nm | Transistor | C - Offset windows | Infrared | 30 | 5.0 | 100 | 0.01 - 0.70 | - | ||
| OPB742WZ | 890 nm | Transistor | 24" / 26 AWG Wire | C - Offset windows | Infrared | 30 | 5.0 | 100 | 0.01 - 0.70 | - | |
| OPB743 | 890 nm | Transistor | A - No windows | Infrared | 30 | 5.0 | 100 | 0.20 - 2.00 | - | ||
| OPB743WZ | 890 nm | Transistor | 24" / 26 AWG Wire | A - No windows | Infrared | 30 | 5.0 | 100 | 0.20 - 2.00 | - | |
| OPB744 | 890 nm | Transistor | B - Blue windows | Infrared | 30 | 5.0 | 100 | 0.20 - 2.00 | - | ||
| OPB744WZ | 890 nm | Transistor | 24" / 26 AWG Wire | B - Blue windows | Infrared | 30 | 5.0 | 100 | 0.20 - 2.00 | - | |
| OPB745 | 935 nm | Darlington | C - Offset windows | Infrared | 15 | 5.0 | 100 | 5.00 - 26.0 | - | ||
| OPB745WZ | 935 nm | Darlington | 24" / 26 AWG Wire | C - Offset windows | Infrared | 15 | 5.0 | 100 | 5.00 - 26.0 | - | |
| OPB746WZ | 935 nm | RBE Transistor | 24" / 26 AWG Wire | B - Blue windows | Infrared | 24 | - | 100 | 0.50 - 2.50 | - | |
| OPB747WZ | 645 nm | RBE Transistor | 24" / 26 AWG Wire | C - Offset windows | Red | 24 | 0.4 | 100 | 0.01 - 0.70 | 1.0 | |
| OPB748WZ | 645 nm | Transistor | 24" / 26 AWG Wire | C - Offset windows | Red | 15 | 5.0 | 100 | 0.01 - 0.70 | 1.0 |
2411220705_OPTEK-OPB743_C1526955.pdf
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