Lead Free Piezoelectric Ceramic Piezo Ring Barium Titanate Piezo Ultrasonic Ring Element

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Product Description

Product Overview

The Lead-Free Piezoelectric Ceramic Piezo Ring is a barium titanate ultrasonic ring element designed for applications that require efficient conversion between mechanical energy and electrical energy. As a functional piezoelectric ceramic component, it provides piezoelectric, dielectric, and elastic properties for precision acoustic and electronic systems.

This lead-free piezo ring element is suitable for ultrasonic transducers, acoustic sensors, underwater acoustic devices, electroacoustic transducers, ceramic filters, ceramic transformers, frequency discriminators, high-voltage generators, infrared detectors, surface acoustic wave devices, electro-optic devices, and piezoelectric gyroscope applications.

Made from barium titanate piezoelectric ceramic material, the ring element generates electric charge when mechanical stress causes relative displacement of internal positive and negative charge centers. This piezoelectric effect enables the component to support sensing, actuation, vibration, and ultrasonic energy conversion.

Key Features

Lead-free barium titanate ceramic material supports environmentally conscious product design while maintaining stable piezoelectric performance for acoustic and ultrasonic applications.

The ring-shaped structure is suitable for ultrasonic transducer assemblies, vibration devices, acoustic components, and custom piezoelectric systems requiring radial and thickness frequency performance.

Multiple dimensions are available to meet different frequency, capacitance, impedance, and mechanical quality factor requirements.

Low dielectric dissipation factor and stable electromechanical coupling coefficient help support efficient signal conversion and reliable long-term operation.

Applications

This piezoelectric ceramic ring can be used in ultrasonic transducers, underwater acoustic transducers, acoustic sensors, electroacoustic transducers, ultrasonic motors, ceramic filters, ceramic transformers, frequency discriminators, high-voltage generators, infrared detectors, surface acoustic wave devices, electro-optic devices, and piezoelectric gyroscopes.

It is suitable for industrial sensing, medical imaging equipment, acoustic measurement systems, ultrasonic cleaning systems, ultrasonic welding systems, precision instruments, and other devices that require reliable piezoelectric energy conversion.

Working Principle

Piezoelectric ceramics work through the piezoelectric effect. When mechanical stress is applied to the material, internal charge centers shift and generate bound charges on the surfaces of the ceramic. This allows the piezo ring to convert mechanical energy into electrical signals.

When an electrical signal is applied, the piezoelectric ceramic can also produce mechanical vibration. This reversible energy conversion makes the ring element suitable for both sensing and actuation in ultrasonic and acoustic systems.

Technical Specifications

Dimension (mm)	Radial Frequency (KHz)	Capacitance (pF)	Dielectric Dissipation Factor tanδ (%)	Electromechanical Coupling Coefficient (Kr)	Impedance Zr (Ω)	Thickness Frequency (KHz)	Mechanical Quality Factor (Qm)
Φ25×Φ10×3	66.4	1240±12.5%	≤0.3	≥0.46	≤15	683±5%	800
Φ25×Φ10×4	66.4	930±12.5%	≤0.3	≥0.46	≤15	512±5%	800
Φ40×Φ12×5	45.9	2070±12.5%	≤0.3	≥0.46	≤15	410±5%	800
Φ40×Φ15×5	42.2	1960±12.5%	≤0.3	≥0.46	≤15	323±5%	500
Φ40×Φ20×5	37.9	1700±12.5%	≤0.3	≥0.47	≤15	410±5%	800
Φ50×Φ20×6	33.2	2490±12.5%	≤0.3	≥0.46	≤15	341±5%	500
Φ50×Φ17×6.5	34.8	2430±12.5%	≤0.3	≥0.46	≤15	315±5%	800
Φ50×Φ23×6	31.2	2340±12.5%	≤0.3	≥0.47	≤15	341±5%	800
Φ50×Φ27×6	29.3	2100±12.5%	≤0.3	≥0.47	≤15	341±5%	800
Φ60×Φ30×10	31.25.3	1922±12.5%	≤0.3	≥0.47	≤18	205±5%	800

Selection Guide

When selecting a piezoelectric ceramic ring, the main factors to consider are outer diameter, inner diameter, thickness, radial frequency, thickness frequency, capacitance, impedance, and mechanical quality factor. These parameters influence the vibration mode, output efficiency, resonance behavior, and compatibility with the final transducer design.

For ultrasonic transducer development, a lower impedance value can help improve energy transfer, while the appropriate mechanical quality factor supports stable resonance performance. The final selection should match the operating frequency, electrical drive circuit, mechanical structure, and acoustic load of the application.

FAQ

What is a lead-free piezoelectric ceramic ring?

A lead-free piezoelectric ceramic ring is a ring-shaped ceramic component that converts mechanical energy and electrical energy through the piezoelectric effect without using lead-based PZT material. This product uses barium titanate ceramic material for acoustic, sensing, and ultrasonic applications.

What is this barium titanate piezo ring used for?

It is commonly used in ultrasonic transducers, acoustic sensors, underwater acoustic devices, ultrasonic motors, ceramic filters, ceramic transformers, frequency discriminators, and other piezoelectric devices.

How do I choose the right piezo ring size?

Choose the size according to the required resonance frequency, capacitance, impedance, mechanical structure, and output performance of your application. Larger or thicker rings generally provide different radial and thickness frequency characteristics.

Can this piezo ring be customized?

Yes, piezoelectric ceramic rings can usually be customized according to dimension, frequency, capacitance, electrode design, and application requirements. Contact the manufacturer with your target specifications for confirmation.

What is the difference between radial frequency and thickness frequency?

Radial frequency refers to the vibration mode along the diameter direction of the ring, while thickness frequency refers to vibration through the thickness direction. Both values are important when designing ultrasonic and acoustic transducer systems.