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

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.

 Non-contact reflective object sensor

 Assembly line automation

 Machine automation

 Machine safety

 End of travel sensor

 Door sensor

 Thermal Paper Mark

 Focused for maximum sensitivity

 Phototransistor or photodarlington output

 Crosstalk does not exceed specified ICEO

 24” (610 mm) wire length

 26 AWG wire size

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

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