Reflective sensor OPTEK OPB708 infrared LED and transistor housed in black plastic enclosure for industrial
Product Overview
The OPB708, OPB740, OPB740WZ, and associated series of reflective object sensors are designed for non-contact object detection. Each sensor comprises an infrared or visible red Light Emitting Diode (LED) paired with an NPN silicon phototransistor or photodarlington. These devices are housed in a black plastic enclosure with converging optical axes, providing a focused field of view for enhanced sensitivity and depth of field. The OPB7_ _WZ series features UL-approved wiring and various lens options for dust protection or improved target resolution. They are suitable for applications in assembly line and machine automation, safety systems, end-of-travel sensing, and door sensing.
Product Attributes
- Brand: TT electronics | OPTEK Technology
- Materials: Black plastic housing, Polysulfone (some models)
- Certifications: UL approved wire (OPB7_ _WZ series)
- RoHS Compliant
Technical Specifications
| Part Number | LED Peak Wavelength | Sensor Type | Reflection Distance (Typ.) | Lead Length / Wire Type | LED Color | Lens Configuration |
|---|---|---|---|---|---|---|
| OPB708 | 935 nm | Transistor | 0.15" [3.81 mm] | 0.150" Minimum | Infrared | D - No windows |
| OPB709 (Obsolete) | - | Darlington | - | - | - | - |
| OPB740 | 890 nm | Transistor | - | - | Infrared | A - No windows |
| OPB741 (Obsolete) | - | Darlington | - | - | - | - |
| OPB742 | - | Transistor | - | - | Infrared | C - Offset windows |
| OPB743 | - | Transistor | - | - | Infrared | A - No windows |
| OPB744 | - | Transistor | - | - | Infrared | B - Blue windows |
| OPB745 | - | Darlington | - | - | Infrared | C - Offset windows |
| OPB740WZ | 890 nm | Transistor | - | 24" / 26 AWG Wire | Infrared | A - No windows |
| OPB741WZ | - | Darlington | - | 24" / 26 AWG Wire | Infrared | B - Blue windows |
| OPB742WZ | - | Transistor | - | 24" / 26 AWG Wire | Infrared | C - Offset windows |
| OPB743WZ | - | Transistor | - | 24" / 26 AWG Wire | Infrared | A - No windows |
| OPB744WZ | - | Transistor | - | 24" / 26 AWG Wire | Infrared | B - Blue windows |
| OPB745WZ | - | Darlington | - | 24" / 26 AWG Wire | Infrared | C - Offset windows |
| OPB746WZ (Obsolete) | 935 nm | Transistor | - | - | - | - |
| OPB747WZ (Obsolete) | 660 nm | - | - | - | Red Visible | - |
| OPB748WZ | 660 nm | Transistor | - | 24" / 26 AWG Wire | Red Visible | C - Offset windows |
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