INDUSTRY COMPONENT

Piezoelectric Ceramic Disc

Piezoelectric ceramic disc converts electrical energy into mechanical vibrations for ultrasonic applications.

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Component Specifications

Definition
A piezoelectric ceramic disc is a thin, circular component made from piezoelectric materials that generates mechanical vibrations when subjected to an alternating electric field. In ultrasonic transducers, it serves as the active element that produces high-frequency sound waves through the inverse piezoelectric effect, enabling applications like ultrasonic cleaning, welding, medical imaging, and non-destructive testing.
Working Principle
Operates on the piezoelectric effect: when an alternating voltage is applied across the disc's electrodes, the piezoelectric material deforms mechanically, creating ultrasonic vibrations. Conversely, it can generate electrical signals from mechanical stress (direct piezoelectric effect).
Materials
Lead zirconate titanate (PZT) ceramics, barium titanate, or lead-free alternatives like potassium sodium niobate (KNN); typically silver or nickel electrodes.
Technical Parameters
  • Diameter 5-50 mm
  • Thickness 0.2-5 mm
  • Capacitance 100 pF - 100 nF
  • Resonant Frequency 20 kHz - 10 MHz
  • Dielectric Constant 500-5000
  • Coupling Coefficient 0.5-0.7
  • Operating Temperature -20°C to 150°C
Standards
ISO 18563-1, DIN EN 50324-1

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Piezoelectric Ceramic Disc.

piezoelectric ceramic disc ultrasonic transducer component PZT disc piezoelectric actuator ultrasonic vibration industrial sensors electronic ceramics Piezoelectric Ceramic Disc in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

Ultrasonic Transducer

A piezoelectric device that converts electrical energy into high-frequency mechanical vibrations to atomize water in humidifiers.

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Engineering Analysis

Risks & Mitigation
  • Mechanical cracking under excessive stress
  • Depolarization at high temperatures
  • Electrode corrosion in humid environments
  • Frequency drift due to aging
FMEA Triads
Trigger: Overvoltage application
Failure: Dielectric breakdown or cracking
Mitigation: Use voltage limiters and proper circuit protection
Trigger: Thermal cycling
Failure: Fatigue cracks or loss of piezoelectric properties
Mitigation: Implement thermal management and select materials with high thermal stability
Trigger: Mechanical overload
Failure: Fracture or delamination
Mitigation: Design with stress relief features and enforce operational limits

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±5% on resonant frequency, ±10% on capacitance
Test Method
Impedance analysis, laser vibrometry, and electrical parameter measurement per IEC 60444

Buyer Feedback

★★★★☆ 4.9 / 5.0 (15 reviews)

"The Piezoelectric Ceramic Disc we sourced perfectly fits our Computer, Electronic and Optical Product Manufacturing production line requirements."

"Found 17+ suppliers for Piezoelectric Ceramic Disc on CNFX, but this spec remains the most cost-effective."

"The technical documentation for this Piezoelectric Ceramic Disc is very thorough, especially regarding technical reliability."

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Frequently Asked Questions

What is the main function of a piezoelectric ceramic disc in an ultrasonic transducer?

It converts electrical signals into high-frequency mechanical vibrations to generate ultrasonic waves for applications like cleaning, welding, or imaging.

Can piezoelectric ceramic discs be used in high-temperature environments?

Yes, with materials like PZT, they typically operate up to 150°C, but performance may degrade near the Curie temperature.

Are there lead-free alternatives for piezoelectric ceramic discs?

Yes, materials such as potassium sodium niobate (KNN) are used to comply with environmental regulations like RoHS.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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PHY (Physical Layer Interface) Piezoelectric Ceramic Layer