Product Description

The OPB708, OPB709, OPB740 through OPB746, and OPB740WZ through OPB746WZ series are reflective object sensors. Each unit comprises an infrared emitting diode and either an NPN silicon phototransistor or a photodarlington. The OPB747WZ and OPB748WZ models feature a Red visible LED paired with a low light level rejection (RBE) NPN silicon phototransistor, offering enhanced contrast for detecting black marks on white surfaces. These devices are designed with side-by-side mounting on converging optical axes within a black plastic housing, focusing on a small area and depth of field. The OPB_WZ series are wired devices (UL approved wire) available with various lens options, including no windows, blue polysulfone windows for dust protection, or opaque aperture windows with offset openings for improved target resolution. The photosensor in each unit activates when a reflective object enters its field of view. Custom options such as IC(ON) current binning, special wire lengths, and connectorization are available.

Applications: Non-contact reflective object sensing, assembly line automation, machine automation, machine safety, end of travel sensing, door sensing, and thermal paper mark detection.

Features: Focused for maximum sensitivity, phototransistor or photodarlington output, crosstalk not exceeding specified ICEO, 24 (610 mm) wire length, and 26 AWG wire size.

Product Attributes

• Brand: TT electronics plc
• Series: OPB708, OPB709, OPB740 Series, OPB740WZ Series
• Material: Black plastic housing, Polysulfone (for some lens configurations)
• Certifications: UL approved wire

Technical Specifications