Product Overview
The BBDM-40K-OPEN is a 40 kHz open-type ultrasonic transducer for air-distance measurement, proximity sensing and obstacle detection. Multiple compact sizes and separate transmitter or receiver versions are available for integration into parking-assistance systems, robotics, automated equipment and OEM ranging modules.
Key Features
- 40 kHz center frequency
- Open acoustic construction
- Choice of Φ10, Φ12 and Φ14 mm compact sizes
- Separate transmitter and receiver versions
- Wide-beam coverage
- Two-pin solder mounting
Φ10 mm and Φ12 mm Configurations
| Parameter | Φ10 mm configuration | Φ12 mm configuration |
|---|---|---|
| Center frequency | 40 kHz ±1 kHz | 40 kHz ±1 kHz |
| Function | Transmitter or receiver | Transmitter or receiver |
| Sound pressure level | ≥110 dB (transmitter) | ≥112 dB (transmitter) |
| Receiving sensitivity | ≥-66 dB (receiver) | ≥-70 dB (receiver) |
| Beam angle | 80° ±15° (-6 dB) | 80° ±15° (-6 dB) |
| Electrostatic capacitance | 2300 pF ±20% | 2400 pF ±20% |
| Maximum operating voltage | 40 Vp-p at 2% pulse duty cycle | 40 Vp-p at 2% pulse duty cycle |
| Operating temperature | -20 to 70°C | -20 to 70°C |
| Storage temperature | -40 to 85°C | -40 to 85°C |
| Dimensions | Φ10 × 7 mm | Φ12 × 10 mm |
| Housing material | ABS | ABS |
| Connection | 2 pins | 2 pins |
Φ14 mm Configuration
| Parameter | Specification |
|---|---|
| Center frequency | 40 kHz ±1 kHz |
| Horizontal beam angle | 90° ±15° |
| Vertical beam angle | 70° ±15° |
| Electrostatic capacitance | 1800 pF ±15% |
| Maximum operating voltage | 150 Vp-p |
| Ring-down time | ≤1.2 ms |
| Operating temperature | -30 to 85°C |
| Storage temperature | -40 to 90°C |
| Profile | Φ14 mm metal housing |
| Connection | Pins |
Applications
- Parking assistance and short-range obstacle detection
- Robotic obstacle avoidance and proximity sensing
- Presence detection in automated equipment
- Air-distance and object-presence measurement
- OEM ultrasonic ranging modules
Operating Information
The product is designed for use in air. Protect the open acoustic surface from water, dust, oil and corrosive environments. Actual detection distance depends on drive voltage, receiver gain, target size, target material and installation conditions.
Selection Information
For selection, specify the required size, transmitter/receiver function, target size, working distance, installation space, operating temperature and drive conditions.