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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, it vibrates to generate corresponding sounds. Used widely in toys, audio electronic watches, instruments, clocks, and timers.
Mechanical deformation occurs in response to voltage changes. Conversely, vibration generates an electric charge. Piezoelectric ceramics can be used as ultrasonic wave sensors by applying electrical signals to dual piezoelectric wafer elements for bending vibration and wave emission.
| Parameter | Symbol | Unit | P-4 | P-8 | P-5A18 | P-5H32 | H-1A |
|---|---|---|---|---|---|---|---|
| Relative Dielectric | ∑T | - | 1150 | 1200 | 1800 | 3000 | 1800 |
| Dielectric Loss | Tgδ | % | 0.5 | 0.4 | 2 | 2 | 1.7 |
| Coupling Factor | Kp | - | 0.55 | 0.53 | 0.62 | 0.65 | 0.63 |
| Piezo Constant | D33 | 10⁻¹²C/N | 280 | 240 | 450 | 600 | 410 |
| Curie Temp | Tc | ºC | 310 | 320 | 310 | 260 | 320 |
Components are made of lead zirconate titanate (PZT) through sintering. Features single-layer (0.1-1mm) or multi-layer stacks. Electrodes are nickel/gold plated and encapsulated with epoxy resin or metal shells for protection up to IP67.
A high-tech enterprise specializing in R&D and production of piezoelectric ceramics. Cooperative relations with top universities and research institutes. Products are used in ultrasonic cleaning, welding, medical B-scan, and underwater acoustics. ISO9001 certified.
