Infrared Reflective Sensor OPTEK OPB744 with NPN Silicon Phototransistor and Infrared Emitting Diode
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Product Description
Reflective Object Sensor OPB708, OPB709, OPB740 Series, OPB740WZ Series
The OPB708, OPB709, OPB740 through OPB746, and OPB740WZ through OPB746WZ series of reflective object sensors each comprise an infrared emitting diode and an NPN silicon phototransistor or photodarlington. The OPB747WZ and OPB748WZ 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 components on converging optical axes within a black plastic housing, focusing on a specific area and depth of field. The OPB_WZ series includes UL-approved wiring and offers various lens options, such as no windows, blue polysulfone for dust protection, or opaque aperture windows with offset openings for improved target resolution. These sensors detect reflective objects within their field of view. Custom options for IC(ON) current binning, wire lengths, and connectorization are available.
Product Attributes
- Brand: TT electronics
- Product Series: OPB708, OPB709, OPB740 Series, OPB740WZ Series
- Material: Black plastic housing, Polysulfone (for specific lens configurations)
- Certifications: UL approved wire (for OPB_WZ series)
Technical Specifications
| Part Number | LED Peak Wavelength | Sensor Type | Reflection Distance (Inch [mm]) | Lead Length / Wire Type | Package Style | Lens Configuration | LED Color | Transistor Type |
|---|---|---|---|---|---|---|---|---|
| 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 | OPB708 | D - No windows | Infrared | Phototransistor |
| OPB709 | 935 nm | Darlington | 0.150" Minimum | OPB709 | D - No windows | Infrared | Photodarlington | |
| OPB740 | 890 nm | Transistor | - | - | OPB740 thru OPB744 | A - No windows | Infrared | Phototransistor |
| OPB741 | 890 nm | Transistor | - | - | OPB740 thru OPB744 | B - Blue windows | Infrared | Phototransistor |
| OPB742 | 890 nm | Transistor | - | - | OPB740 thru OPB744 | C - Offset windows | Infrared | Phototransistor |
| OPB743 | 890 nm | Transistor | - | - | OPB740 thru OPB744 | A - No windows | Infrared | Phototransistor |
| OPB744 | 890 nm | Transistor | - | - | OPB740 thru OPB744 | B - Blue windows | Infrared | Phototransistor |
| OPB745 | 890 nm | Darlington | - | - | OPB740 thru OPB744 | C - Offset windows | Infrared | Photodarlington |
| OPB740WZ | 890 nm | Transistor | - | 24" / 26 AWG Wire | OPB740WZ thru OPB744WZ | A - No windows | Infrared | Phototransistor |
| OPB741WZ | 890 nm | Transistor | - | 24" / 26 AWG Wire | OPB740WZ thru OPB744WZ | B - Blue windows | Infrared | Phototransistor |
| OPB742WZ | 890 nm | Transistor | - | 24" / 26 AWG Wire | OPB740WZ thru OPB744WZ | C - Offset windows | Infrared | Phototransistor |
| OPB743WZ | 890 nm | Transistor | - | 24" / 26 AWG Wire | OPB740WZ thru OPB744WZ | A - No windows | Infrared | Phototransistor |
| OPB744WZ | 890 nm | Transistor | - | 24" / 26 AWG Wire | OPB740WZ thru OPB744WZ | B - Blue windows | Infrared | Phototransistor |
| OPB745WZ | 890 nm | Darlington | - | 24" / 26 AWG Wire | OPB745WZ, OPB746WZ, OPB747WZ, OPB748WZ | C - Offset windows | Infrared | Photodarlington |
| OPB746WZ | 935 nm | RBE Transistor | - | 24" / 26 AWG Wire | OPB745WZ, OPB746WZ, OPB747WZ, OPB748WZ | B - Blue windows | Infrared | RBE Transistor |
| OPB747WZ | 645 nm | Transistor | - | 24" / 26 AWG Wire | OPB745WZ, OPB746WZ, OPB747WZ, OPB748WZ | C - Offset windows | Red Visible | Phototransistor |
| OPB748WZ | 645 nm | Transistor | - | 24" / 26 AWG Wire | OPB745WZ, OPB746WZ, OPB747WZ, OPB748WZ | C - Offset windows | Red Visible | Phototransistor |
| Part Number | Collector-Emitter Voltage (V) | Emitter-Collector Voltage (V) | Power Dissipation (mW) | Operating Temperature (C) |
|---|---|---|---|---|
| OPB708 | 30 | 5.0 | 100 | -40 to +85 |
| OPB709 | 15 | 5.0 | 100 | -40 to +85 |
| OPB740, OPB741, OPB742, OPB743, OPB744 | 30 | 5.0 | 100 | -40 to +85 |
| OPB740WZ, OPB741WZ, OPB742WZ, OPB743WZ, OPB744WZ | 30 | 5.0 | 100 | -40 to +80 |
| OPB745 | 15 | 5.0 | 100 | -40 to +85 |
| OPB745WZ | 15 | 5.0 | 100 | -40 to +80 |
| OPB746WZ | 24 | 0.4 | 100 | -40 to +80 |
| OPB747WZ | 24 | 0.4 | 100 | -40 to +80 |
| OPB748WZ | 15 | 5.0 | 100 | -40 to +80 |
| Part Number | Parameter | Min | Typ | Max | Units | Test Conditions |
|---|---|---|---|---|---|---|
| OPB709, OPB745, OPB745WZ | ICEO (Collector Dark Current) | - | - | 25 | A | VCE = 5 V, IF = 0, EE = 0 |
| OPB708 | VCE(SAT) (Saturation Voltage) | - | - | 0.40 | V | IF = 40 mA, Ic = 3 A, d = 0.15" |
| OPB709, OPB745, OPB745WZ | VCE(SAT) (Saturation Voltage) | - | - | 1.10 | V | IF = 40 mA, Ic = 3 A, d = 0.15" (OPB709) IF = 40 mA, Ic = 400 A, d = 0.15" (OPB745/WZ) |
| OPB708 | IC(ON) (On-State Collector Current) | 0.01 | 3.00 | - | mA | VCE = 5 V, IF = 40 mA, d = 0.15" (3.810 mm) |
| OPB709 | IC(ON) (On-State Collector Current) | 1.00 | - | - | mA | VCE = 5 V, IF = 40 mA, d = 0.15" (3.810 mm) |
| OPB740, OPB740WZ | IC(ON) (On-State Collector Current) | 0.05 | 2.50 | - | mA | VCE = 5 V, IF = 40 mA, d = 0.15" (3.810 mm) |
| OPB741, OPB741WZ | IC(ON) (On-State Collector Current) | 0.05 | 2.50 | - | mA | VCE = 5 V, IF = 40 mA, d = 0.15" (3.810 mm) |
| OPB742, OPB742WZ | IC(ON) (On-State Collector Current) | 0.01 | 0.70 | - | mA | VCE = 5 V, IF = 40 mA, d = 0.15" (3.810 mm) |
| OPB743, OPB743WZ | IC(ON) (On-State Collector Current) | 0.20 | 2.00 | - | mA | VCE = 5 V, IF = 40 mA, d = 0.15" (3.810 mm) |
| OPB744, OPB744WZ | IC(ON) (On-State Collector Current) | 0.20 | 2.00 | - | mA | VCE = 5 V, IF = 40 mA, d = 0.15" (3.810 mm) |
| OPB745, OPB745WZ | IC(ON) (On-State Collector Current) | 5.00 | 26.0 | - | mA | VCE = 5 V, IF = 40 mA, d = 0.15" (3.810 mm) |
| OPB746WZ | IC(ON) (On-State Collector Current) | 0.50 | 2.50 | - | mA | VCE = 5 V, IF = 40 mA, d = 0.15" (3.810 mm) |
| OPB747WZ | IC(ON) (On-State Collector Current) | 0.01 | 0.70 | - | mA | VCE = 5 V, IF = 40 mA, d = 0.15" (3.810 mm) |
| OPB748WZ | IC(ON) (On-State Collector Current) | 0.01 | 0.70 | - | mA | VCE = 5 V, IF = 40 mA, d = 0.15" (3.810 mm) |
| OPB708, OPB709, OPB740, OPB740WZ | ICX (Crosstalk) | - | - | 10.0 | A | VCC = 5 V, IF = 40 mA |
| OPB741, OPB741WZ | ICX (Crosstalk) | - | - | 10.0 | A | VCC = 5 V, IF = 40 mA |
| OPB742, OPB742WZ | ICX (Crosstalk) | - | - | 1.0 | A | VCC = 5 V, IF = 40 mA |
| OPB743, OPB743WZ | ICX (Crosstalk) | - | - | 20.0 | A | VCC = 5 V, IF = 40 mA |
| OPB744, OPB744WZ | ICX (Crosstalk) | - | - | 20.0 | A | VCC = 5 V, IF = 40 mA |
| OPB745, OPB745WZ | ICX (Crosstalk) | - | - | 25.0 | A | VCC = 5 V, IF = 40 mA |
| OPB746WZ | ICX (Crosstalk) | - | - | 1.0 | A | VCC = 5 V, IF = 40 mA |
| OPB747WZ | ICX (Crosstalk) | - | - | 1.0 | A | VCC = 5 V, IF = 40 mA |
| OPB748WZ | ICX (Crosstalk) | - | - | 1.0 | A | VCC = 5 V, IF = 40 mA |
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