Phototransistor based reflective sensor OPTEK OPB732 for non contact object detection in automation
Product Description
The KW 732 and KW 732t are reflective optical switches utilizing an Infrared LED and a phototransistor. They are designed for non-contact object sensing in various automation and safety applications. The assembly is available with PCB through-hole pins (KW 732) or 24" wires (KW 732t). An opaque housing minimizes ambient light sensitivity, and a clear window protects the emitter and sensor, allowing operation in dusty environments. The phototransistor can be configured as a common collector or common emitter device. When an object is present, light is reflected back to the phototransistor, causing it to become forward biased and enter the "ON" state, producing a current proportional to the light intensity. When no light is reflected, the phototransistor turns "OFF", minimizing current. Custom electrical, wire, cabling, and connector options are available.
Applications
- Non-contact reflective object sensor
- Assembly line automation
- Machine automation
- Equipment security
- Door sensor
- Machine safety
- End of travel sensor
Features
- PCB board mounting (KW 732)
- 24" (610 mm) 26 AWG wired with mounting tabs (KW 732t)
- Non-contact infrared switch
- Up to 1" or more reflective distance depending on circuitry
Technical Specifications
| Part Number | IR Peak Wavelength | Lead Length / Spacing | Storage Temperature | Operating Temperature | Forward Current | Peak Forward Current | Reverse Voltage | Power Dissipation | Collector-Emitter Voltage | Collector Current | On-State Collector Current | Distance |
| KW 732 | 850 nm | 0.150" / See Diagram | -40C to +100C | -40C to +85C | 50 mA | 1 A (2 s pulse width, 0.1% duty cycle) | 3 V | 100 mW | 30 V | 50 mA | 0.25 mA (IF=30mA) | 1" (90% diffuse reflective white card) |
| KW 732t | 850 nm | 24" / 26 AWG Wire | -40C to +100C | -40C to +85C | 50 mA | 1 A (2 s pulse width, 0.1% duty cycle) | 3 V | 100 mW | 30 V | 50 mA | 0.25 mA (IF=30mA) | 1" (90% diffuse reflective white card) |
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