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Piezoelectric Ceramic Disc Component – Computer, Electronic and Optical Product Manufacturing

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.

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.

View Product Details

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

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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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.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Piezoelectric Ceramic Disc