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K-180

Lead Zirconate Titanate Piezoelectric Ceramic with High Shear Coupling Coefficient, Low Permittivity, and High Temperature Stability

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

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