High-Sensitivity Soft Piezoelectric Ceramics for Advanced Sensor and Ultrasonic Applications

Our high-sensitivity soft piezoelectric ceramics are specifically developed for demanding sensing, imaging, and actuation applications. Through advanced ceramic formulations, strict process control, and precision machining, we deliver piezoceramic components with superior electrical and mechanical performance, meeting the requirements of both prototype development and high-volume manufacturing.

With porosity levels below 1%, our materials exhibit highly uniform microstructures that enhance piezoelectric activity, dielectric properties, and long-term reliability. From material selection and custom formulation development to precision fabrication and mass production, our experienced engineering team provides comprehensive support to help bring innovative designs to market.

Key Advantages

• High piezoelectric sensitivity for accurate signal transmission and detection
• Relative permittivity ranging from 1000 to 2000
• High piezoelectric charge constant (d₃₃ ≥ 400 pC/N)
• Low mechanical quality factor (Qm ≤ 100)
• Excellent dielectric and electromechanical properties
• Superior machinability for complex geometries and tight tolerances
• Low porosity (<1%) for improved consistency and reliability
• Engineering support for material selection and transducer optimization
• Stable performance across demanding operating environments

Available Material Grades

Our soft piezoelectric ceramic portfolio includes:

• SONOBIO® PZT-5C2, PZT-5B4, PZT-53A, PZT-43, PZT-54A

These materials are optimized for applications requiring high sensitivity, broad bandwidth, and efficient electro-mechanical energy conversion.

Applications

Medical Ultrasound Systems

Soft PZT materials are widely used in medical ultrasound imaging arrays, Doppler probes, and diagnostic transducers.

Ultrasonic Sensors

Typical applications include:

• Distance measurement sensors
• Proximity sensors
• Flow measurement systems
• Level detection sensors
• Automotive parking sensors
• Industrial monitoring equipment

Vibration and Motion Sensing

The low mechanical quality factor and high sensitivity of soft piezoceramics make them ideal for:

• Accelerometers
• Vibration sensors
• Shear-mode sensing elements
• Structural health monitoring systems

Actuation and Fluid Control

Soft piezoelectric materials are also widely used in:

• Precision valves
• Micro-fluidic systems
• Inkjet technologies
• Precision positioning devices
• Piezoelectric actuators

Automotive-Grade Thermal Stability

SONOBIO PZT 5 Series have been specifically engineered to provide outstanding thermal and aging stability. These materials maintain reliable performance over an extended temperature range of –40°C to +160°C, making them particularly suitable for automotive ultrasonic sensors and other harsh-environment applications.