INDUSTRY COMPONENT

Piezoelectric Ceramic Element

Piezoelectric ceramic element converts electrical signals into mechanical vibrations for sound generation in piezoelectric sounders.

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Component Specifications

Definition
A piezoelectric ceramic element is a specialized electronic component made from piezoelectric ceramic materials (typically lead zirconate titanate - PZT) that exhibits the piezoelectric effect. When an alternating electrical voltage is applied across its electrodes, the material undergoes mechanical deformation, producing ultrasonic vibrations. In piezoelectric sounders, these vibrations are amplified by a resonant cavity to generate audible sound waves. The component serves as the core transducer that converts electrical energy into acoustic energy through direct piezoelectric actuation.
Working Principle
Operates on the inverse piezoelectric effect where applied alternating voltage causes mechanical strain in the ceramic material. The ceramic element expands and contracts at the frequency of the applied voltage, creating vibrations that are transmitted through a diaphragm or resonator to produce sound. The vibration frequency is determined by the ceramic's resonant characteristics and the driving circuit frequency.
Materials
Lead zirconate titanate (PZT) ceramics, doped with various additives (niobium, lanthanum) to optimize piezoelectric properties. Electrodes: Silver or nickel-silver alloy fired onto ceramic surfaces. Optional protective coatings: Epoxy resin or silicone for moisture resistance.
Technical Parameters
  • Capacitance 1000-15000 pF
  • Operating Voltage 3-30 Vp-p
  • Resonant Frequency 2.0-4.0 kHz (typical for audible sounders)
  • Dielectric Strength ≥250 VAC
  • Resonance Impedance ≤300 Ω
  • Sound Pressure Level 85-105 dB at 10 cm
  • Insulation Resistance ≥100 MΩ
  • Operating Temperature -20°C to +70°C
Standards
IEC 60384-14, JIS C 6441, ISO 9001

Industry Taxonomies & Aliases

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

piezoelectric ceramic PZT element piezo sounder component ceramic transducer piezoelectric buzzer element electronic sound component Piezoelectric Ceramic Element Piezoelectric Ceramic Element in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

Piezoelectric Sounder

An electronic audio signaling device that generates sound using piezoelectric effect

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Engineering Analysis

Risks & Mitigation
  • Ceramic brittleness causing mechanical failure
  • Electrode delamination under thermal cycling
  • Performance degradation in high humidity
  • Resonant frequency drift with temperature changes
FMEA Triads
Trigger: Mechanical stress from improper mounting
Failure: Ceramic cracking or electrode separation
Mitigation: Use compliant mounting materials, avoid direct pressure on ceramic, follow torque specifications
Trigger: Overvoltage or voltage spikes
Failure: Dielectric breakdown or electrode arcing
Mitigation: Implement voltage clamping circuits, use drivers with current limiting, adhere to maximum voltage ratings
Trigger: Thermal expansion mismatch
Failure: Stress cracks at electrode-ceramic interface
Mitigation: Select compatible expansion coefficient materials, implement gradual thermal cycling in manufacturing

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Frequency tolerance ±5%, capacitance tolerance ±20%
Test Method
Impedance analyzer for resonance testing, sound level meter for SPL verification, dielectric withstand tester for insulation

Buyer Feedback

★★★★☆ 4.5 / 5.0 (37 reviews)

"As a professional in the Computer, Electronic and Optical Product Manufacturing sector, I confirm this Piezoelectric Ceramic Element meets all ISO standards."

"Standard OEM quality for Computer, Electronic and Optical Product Manufacturing applications. The Piezoelectric Ceramic Element arrived with full certification."

"Great transparency on the Piezoelectric Ceramic Element components. Essential for our Computer, Electronic and Optical Product Manufacturing supply chain."

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Frequently Asked Questions

What is the typical lifespan of a piezoelectric ceramic element?

Typically exceeds 100 million cycles due to solid-state operation with no moving parts, limited mainly by electrode degradation or mechanical fatigue under extreme conditions.

Can piezoelectric ceramic elements be used in humid environments?

Yes, with proper protective coatings (epoxy or silicone), though prolonged exposure to condensation may affect performance. IP-rated housings are recommended for harsh conditions.

How does driving frequency affect sound output?

Maximum efficiency occurs at the element's resonant frequency. Operating within ±10% of resonance optimizes sound pressure level while minimizing power consumption.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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