Commonly used piezoelectric ceramics include barium titanate system, lead zirconate titanate binary system, and ternary systems composed of Pb (Mn1/3Nb2/3) O3 and Pb (Co1/3Nb2/3) O3 by adding a third type of ABO3 (A represents divalent metal ions, B represents tetravalent metal ions, or the sum of several ions is positive tetravalent) to the binary system. If a fourth or more compound is added to the ternary system, a quaternary or multivariate piezoelectric ceramic can be formed. In addition, there is also a type of niobate based piezoelectric ceramics, such as sodium potassium niobate (Na0.5 · K0.5 · NbO3) and barium strontium niobate (Bax · Sr1-x · Nb2O5), which do not contain toxic lead and are beneficial for environmental protection.
| spec | Dimension (mm) |
Radial frequency (KHz) |
Capacitance (pf) |
Dielectric dissipation factor tanδ(%) |
Electromechanical coupling coefficient (Kr) |
Impedance Zr(Ω) |
Thickness frequency (KHz) |
| PU-PC25103 | Φ25×Φ10×3 | 66.4 | 1240±12.5% | ≤0.3 | ≥0.46 | ≤15 | 683±5% |
| PU-PC225104 | Φ25×Φ10×4 | 66.4 | 930±12.5% | ≤0.3 | ≥0.46 | ≤15 | 512±5% |
| PU-PC40155 | Φ40×Φ12×5 | 45.9 | 2070±12.5% | ≤0.3 | ≥0.46 | ≤15 | 410±5% |
| PU-PC40155 | Φ40×Φ15×5 | 42.2 | 1960±12.5% | ≤0.3 | ≥0.46 | ≤15 | 323±5% |
| PU-PC40176 | Φ40×Φ17×6 | 40.5 | 1555±12.5% | ≤0.3 | ≥0.46 | ≤15 | 341±5% |
| PU-PC40205 | Φ40×Φ20×5 | 37.9 | 1700±12.5% | ≤0.3 | ≥0.47 | ≤15 | 410±5% |
| PU-PC50206 | Φ50×Φ20×6 | 33.2 | 2490±12.5% | ≤0.3 | ≥0.46 | ≤15 | 341±5% |
| PU-PC501765 | Φ50×Φ17×6.5 | 34.8 | 2430±12.5% | ≤0.3 | ≥0.46 | ≤15 | 315±5% |
| PU-PC50236 | Φ50×Φ23×6 | 31.2 | 2340±12.5% | ≤0.3 | ≥0.47 | ≤15 | 341±5% |
| PU-PC50276 | Φ50×Φ27×6 | 29.3 | 2100±12.5% | ≤0.3 | ≥0.47 | ≤15 | 341±5% |
| PU-PC603010 | Φ60×Φ30×10 | 25.3 | 1922±12.5% | ≤0.3 | ≥0.47 | ≤18 | 205±5% |
