Product Overview
The OPB720A and OPB720B Series are long-distance reflective switches designed to detect objects from a distance of up to 12 inches (305 mm) using standard 90% reflective material, and can identify objects as small as 0.08 inches (2 mm). These sensors feature a synchronous driver detection scheme for compensation against ambient light conditions, providing a logical output that switches from high to low when a reflective target is present or absent, respectively. The series offers three standard reflective switching distances: -06Z for 6" (152 mm), -12Z for 12" (305 mm), and -30VZ for 30" (762 mm). The OPB720A series operates on a 10 to 30 VDC power supply, while the OPB720B series uses a 4 to 7 VDC supply. They are suitable for both reflective and interruptive modes and are compatible with most PLCs and TTL gates due to their open collector output transistor.
Product Attributes
- Brand: TT electronics | OPTEK Technology
- Certifications: RoHS (OPB720B-30VZ only)
Technical Specifications
| Part Number | Description | Power Supply Voltage (Vcc) | Typical Detection Distance (with 90% reflective material) | Output Type | Lead Length | RoHS |
|---|
| OPB720A-06Z | Maximum detection of 0.04 to 6 (1.0 mm to 152 mm) | 10 to 30 Volts | 6" (152 mm) | Open Collector | 39" (991 mm) 28 AWG wire | |
| OPB720B-06Z | Maximum detection of 0.04 to 6 (1.0 mm to 152 mm) | 4 to 7 Volts | 6" (152 mm) | Open Collector | 39" (991 mm) 28 AWG wire | |
| OPB720A-12Z | Maximum detection of 0.04 to 12 (1.0 mm to 305 mm) | 10 to 30 Volts | 12" (305 mm) | Open Collector | 39" (991 mm) 28 AWG wire | |
| OPB720B-12Z | Maximum detection of 0.04 to 12 (1.0 mm to 305 mm) | 4 to 7 Volts | 12" (305 mm) | Open Collector | 39" (991 mm) 28 AWG wire | |
| OPB720A-30VZ | Obsolete | 10 to 30 Volts | | | | |
| OPB720B-30VZ | Maximum detection of 0.04 to 30 (1.0 mm to 762 mm) | 4 to 7 Volts | 30" (762 mm) | Open Collector | 39" (991 mm) 28 AWG wire | Yes |
Applications
- Conveyer belt package recognition
- Personnel movement recognition
- Near-focus security systems
- Hand wash and soap dispensing stations
- Toilet and urinal sensors
- Product dispensing systems
Absolute Maximum Ratings
| Parameter | OPB720A Series | OPB720B Series | Units |
|---|
| Operating Temperature Range | 0 C to + 50 C | 0 C to + 70 C | C |
| Storage Temperature Range | -40 C to + 80 C | C |
| Supply Voltage (VCC) | 10 to 30 | 4 to 7 | Volts |
| Maximum Collector Voltage | 30 | V |
| Collector DC Current (Sink) | 50 | mA |
| Power Dissipation | 300 | mW |
Electrical Characteristics (TA = 25 C)
| Symbol | Parameter | OPB720A Series (Typ) | OPB720B Series (Typ) | Units | Test Conditions |
|---|
| VOL | Low Level Output Voltage | 0.8 | 0.8 | V | VCC = 10 Volts, RL = 10 K, VCE = VCC (No Target) |
| VOH | High Level Output Voltage | 5.0 | 3.5 | V | VCC = 10 Volts, RL = 10 K, VCE = VCC (90% Reflective Surface) |
