Piezoelectric Ceramic Disc: Diameter 5-50 mm

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

Parameter	Typical range	Notes & selection driver
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

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 18563-1, DIN EN 50324-1

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

Typical Suppliers & Equivalents

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

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Piezoelectric Ceramic Disc

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

FBelec

Dongguan, Guangdong, CN

Also makes: Ultrasonic Sensor, AC-DC Converter, Ultrasonic Transducer and 9 more

Listed on the company's own website · profile compiled by CNFX from public sources

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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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.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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