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TT Electronics - Optek Technology OPB732 Reflective Infrared Sensor

The OPB732 is a long-distance reflective infrared sensor utilizing an LED and phototransistor in a non-contact switch configuration. Available with PCB mounting or 24-inch wired options, it features an opaque housing to reduce ambient light sensitivity, allowing operation in dusty environments. The sensor detects objects up to 1 inch or more, with a reflective distance depending on circuitry. Ideal for automation, security, and safety applications, it offers reliable switching of IR signals when objects are detected within range, ensuring accurate sensing in industrial environments.

Authorized Distributors
Source:Newark
Part No:OPB732
Stock:199
Inv Date:06-11-2026
Price: Unit price: $5.06
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Source:DigiKey
Part No:OPB732
Stock:686
Inv Date:06-11-2026
Price: Unit price: $4.61
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Part No:OPB732
Stock:254
Inv Date:06-12-2026
Price: Unit price: $4.61
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Part No:OPB732
Stock:0
Inv Date:06-11-2026
Price: Unit price: $5.73
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Part No:OPB732
Stock:143
Inv Date:06-11-2026
Price: Unit price: $5.687
Buy/RFQ:
Part No:OPB732
Stock:143
Inv Date:06-11-2026
Price: Unit price: $5.687
Buy/RFQ:
Part No:OPB732
Stock:0
Inv Date:06-11-2026
Price: Unit price: $4.23
Buy/RFQ:

TT Electronics - Optek Technology OPB732 Reflective Infrared Sensor Specifications:

  • Storage Temperature: -40°C to +100°C
  • Operating Temperature: -40°C to +85°C
  • Forward Voltage of LED: 1.8 V at 20 mA
  • Peak Forward Current: 1A (pulse), 50 mA (DC)
  • Reverse DC Voltage: 3 V
  • Collector-Emitter Voltage: 30 V
  • Collector DC Current: 50 mA
  • Power Dissipation: 100 mW (LED and phototransistor)
  • Distance Detection Range: Up to 1 inch or more depending on circuitry
  • Ambient Light Immunity: Reduced with opaque housing
  • Housing Material: Opaque plastic
  • Lead Length: 24 inches (for wiring model)
  • Pin Configuration: Emitter, Collector, Anode, Cathode
  • RoHS Compliant
  • Soldering Temperature: 260°C for 5 seconds at 1.6 mm from case

Buy the TT Electronics Series Reflective Infrared Sensor: OPB732

Purchase the TT Electronics OPB732 today, a reliable long-distance reflective infrared sensor designed for automation, security, and safety applications. Its non-contact operation ensures precise detection of objects up to one inch or more, making it ideal for assembly line automation, machine safety, and equipment security. Featuring an opaque housing for dusty environments and options with PCB mounting or 24-inch wired leads, it guarantees durability and accurate performance in demanding industrial conditions. Order online now for fast, dependable delivery of this essential sensing component.

Get TT Electronics OPB732 today—built for precision and long-lasting durability in object detection and automation systems.

Frequently Asked Questions

Where can I buy TT Electronics - Optek Technology OPB732?

You can click on the BUY or RFQ button to purchase OPB732 from an authorized TT Electronics - Optek Technology distributor.

How do I troubleshoot issues or seek technical support for part OPB732?

You can download the OPB732 datasheet or visit the TT Electronics - Optek Technology website for support.

Who is the manufacturer of OPB732?

TT Electronics - Optek Technology

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