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Formerly Etalon - Piezo Technologies
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Piezo Tech is ISO 9001:2000 Certified. Certification No. C2006-02533.
Lead Zirconate Titanate Piezoelectric Ceramic with High Shear Coupling Coefficient, Low Permittivity, and High Temperature Stability
Piezo Technologies' K-180 is a lead zirconate titanate piezoelectric ceramic material that has a high shear coupling coefficient with low permittivity, and high temperature stability. This material can be used in high frequency shear resonance applications such as ultrasonic delay lines. Also, the high "kt" makes this material usable in some medium range frequency small diameter transducer applications.
| K-180 PHYSICAL & ELECTRICAL PROPERTIES | ||
| Note: The above values are nominal. | ||
| k3 | Relative Dielectric Constant | 425 |
| k33 | Longitudinal Coupling Coefficient | 0.67 |
| k31 | Transverse Coupling Coefficient | 0.30 |
| k15 | Shear Coupling Coefficient | 0.68 |
| kt | Thickness Coupling Coefficient | 0.53 |
| kp | Planar Coupling Coefficient | 0.52 |
| d33 | Piezoelectric Strain Constant (x 10-12 Coul/Newton) | 180 |
| d31 | Piezoelectric Strain Constant (x 10-12 Coul/Newton) | -60 |
| d15 | Piezoelectric Strain Constant (x 10-12 Coul/Newton) | 350 |
| g33 | Piezoelectric Voltage Constant (x 10-3 Vm/N) | 41 |
| g31 | Piezoelectric Voltage Constant (x 10-3 Vm/N) | -15 |
| g15 | Piezoelectric Voltage Constant (x 10-3 Vm/N) | 50 |
|
QM |
Mechanical Q (Thickness) | 600 |
|
YE33 |
Young's Modulus at Constant Field (x 1010 N/m2) | 7.1 |
| D | Dissipation (factored at 1kHz) | 0.03 |
| Nt | Thickness Frequency Constant
(kHz-in) (Hz-m) |
79 2005 |
| ρ | Density (g/cm3) | 7.7 |
| ZA | Acoustic Impedance (Mega RayL) | 31 |
| Vs | Sound Velocity (m/sec) | 4000 |
| TC | Curie Temperature (°C) | 350 |
| CTE | Coefficient of Thermal Expansion (x 10-6 in/in/°F) | 2 |