Scanning ultrasonic transducer BBUA-SS

immersiblehigh-frequencyfor obstacle detection

Overview
The BBUA-SS series is a family of scanning sonar ultrasonic transducers designed for scanning sonar, underwater profile measurement, short-range underwater imaging and submerged-target search. Models cover center frequencies from 650 kHz to 2.25 MHz with frequency-dependent electrical and beam characteristics.

Core frequency configurations
650 kHz ±5% | Minimum impedance: 150 Ω ±20% | Capacitance at 1 kHz: 1,200 pF ±20% | Peak voltage: <330 Vpp | Half-power beam angle: 0.83° ±10% | Operating temperature: -20 to +60°C
750 kHz ±5% | Minimum impedance: 200 Ω ±20% | Capacitance at 1 kHz: 1,100 pF ±20% | Peak voltage: <285 Vpp | Half-power beam angle: 2.3° ±10% | Operating temperature: -20 to +60°C
1.2 MHz ±5% | Minimum impedance: 75 Ω ±20% | Capacitance at 1 kHz: 550 pF ±20% | Peak voltage: <200 Vpp | Half-power beam angle: 2.3° ±10% | Operating temperature: -20 to +60°C
1.5 MHz ±5% | Minimum impedance: 6 Ω ±20% | Capacitance at 1 kHz: 4,500 pF ±20% | Peak voltage: <150 Vpp | Half-power beam angle: 2° ±10% | Operating temperature: -40 to +80°C
2.25 MHz ±5% | Minimum impedance: 5 Ω ±20% | Capacitance at 1 kHz: 5,800 pF ±20% | Peak voltage: <95 Vpp | Half-power beam angle: 1.5° ±10% | Operating temperature: -40 to +80°C

Confirmed bandwidth and range
Bandwidth (-3 dB): 650 kHz | ±20%
Bandwidth (-3 dB): 750 kHz | ±20%
Bandwidth (-3 dB): 2.25 MHz | ±20%

Reference range:
650 kHz | 0.30 to 120 m
750 kHz | 0.30 to 10 m

Pressure and construction data
1.5 MHz | Pressure rating: ≤0.3 MPa | Protection rating: IP68
2.25 MHz | Pressure rating: 0.3 MPa | Protection rating: IP68

Housing material: aluminum for 650 kHz, 750 kHz and 1.2 MHz configurations; composite material documented for the 1.5 MHz configuration. Documented weight: 1.2 MHz configuration specified at 10 g ±5%.

Documented applications

• Scanning sonar
• Underwater profile measurement
• Short-range underwater imaging
• Underwater target search

Technical specifications

• Model series: BBUA-SS
• Center frequencies available: 650 kHz ±5%, 750 kHz ±5%, 1.2 MHz ±5%, 1.5 MHz ±5%, 2.25 MHz ±5%
• Minimum impedance per frequency: 650 kHz = 150 Ω ±20%, 750 kHz = 200 Ω ±20%, 1.2 MHz = 75 Ω ±20%, 1.5 MHz = 6 Ω ±20%, 2.25 MHz = 5 Ω ±20%
• Capacitance at 1 kHz per frequency: 650 kHz = 1,200 pF ±20%, 750 kHz = 1,100 pF ±20%, 1.2 MHz = 550 pF ±20%, 1.5 MHz = 4,500 pF ±20%, 2.25 MHz = 5,800 pF ±20%
• Peak voltage (Vpp) limits: 650 kHz <330 Vpp, 750 kHz <285 Vpp, 1.2 MHz <200 Vpp, 1.5 MHz <150 Vpp, 2.25 MHz <95 Vpp
• Half-power beam angles: 650 kHz = 0.83° ±10%, 750 kHz = 2.3° ±10%, 1.2 MHz = 2.3° ±10%, 1.5 MHz = 2° ±10%, 2.25 MHz = 1.5° ±10%
• Operating temperature ranges: 650/750/1.2 MHz = -20 to +60°C; 1.5/2.25 MHz = -40 to +80°C
• Bandwidth at -3 dB: 650 kHz ±20%, 750 kHz ±20%, 2.25 MHz ±20%
• Reference ranges: 650 kHz = 0.30 to 120 m; 750 kHz = 0.30 to 10 m
• Pressure ratings: 1.5 MHz ≤0.3 MPa; 2.25 MHz = 0.3 MPa
• Protection rating: IP68 (documented for 1.5 MHz and 2.25 MHz)
• Housing materials: aluminum (650 kHz, 750 kHz, 1.2 MHz) and composite (1.5 MHz)
• Weight: 1.2 MHz configuration specified at 10 g ±5%