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Piezoelectric ceramic sheet, commonly known as buzzers, is an electronic sound-producing component. Between two copper circular electrodes, a piezoelectric ceramic material is placed. When an alternating audio signal is connected to the two electrodes, the piezoelectric sheet will vibrate according to the size and frequency of the signal, thereby generating corresponding sounds. Utilizing the principle of mechanical deformation in response to voltage changes, these components are widely used in electronic instruments, timers, and ultrasonic wave sensors.
| Parameter | Symbol | Unit | P-4 | P-8 | P-5A18 | P-5H32 |
|---|---|---|---|---|---|---|
| Relative Dielectric Constant | ∑T | - | 1150 | 1200 | 1800 | 3000 |
| Dielectric Loss | Tgδ | % | 0.5 | 0.4 | 2 | 2 |
| Electromechanical Coupling | Kp | - | 0.55 | 0.53 | 0.62 | 0.65 |
| Curie Temperature | Tc | ºC | 310 | 320 | 310 | 260 |
| Density | ρ | 10³kg/m³ | 7.5 | 7.5 | 7.6 | 7.6 |
Piezoelectric ceramic components are made of lead zirconate titanate (PZT) as the core material. The structure covers single-layer sheets, multi-layer stacks, and composite cantilever beams. The surface is plated with nickel/gold electrodes to ensure electrical conductivity. These components achieve energy conversion through the positive and reverse piezoelectric effects, ideal for high-frequency vibration (20kHz-15MHz) in distance measurement or imaging functions.
As a high-tech enterprise specializing in the R&D and production of piezoelectric ceramics, we cooperate with top-tier universities and institutes. Our products are widely utilized in ultrasonic cleaning, welding, medical B-scan, and underwater acoustic fields. We adhere to the ISO9001 quality management system to provide stable and excellent performance products.
