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Piezo Tech is ISO 9001:2000 Certified. Certification No. C2006-02533. Keramos logo

K-182

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-182 is a modified lead zirconate titanate piezoelectric ceramic similar to K180, but with a slightly higher dielectric constant. This material 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-182 PHYSICAL & ELECTRICAL PROPERTIES
Note:  The above values are nominal. 

KT33

 Free Dielectric Constant 540

KS33

 Clamped Dielectric Constant 310
k33 Longitudinal Coupling Coefficient 0.48
k31 Transverse Coupling Coefficient 0.23
k15 Shear Coupling Coefficient 0.52
kt Thickness Coupling Coefficient 0.48
kp Planar Coupling Coefficient 0.50
d33 Piezoelectric Strain Constant (x 10-12 m/V) 220
d31 Piezoelectric Strain Constant (x 10-12 m/V) -95
d15 Piezoelectric Strain Constant (x 10-12 m/V) 330
g33 Piezoelectric Voltage Constant (x 10-3 Vm/N) 46
g31 Piezoelectric Voltage Constant (x 10-3 Vm/N) -22
g15 Piezoelectric Voltage Constant (x 10-3 Vm/N) 65

sE33

 Compliance at Constant Field (x 10-12 m2/N) 12

QM

 Mechanical Q (Thickness) 200

QM

 Mechanical Q (Radial) 320

YE33

 Young's Modulus at Constant Field (x 1010 N/m2) 8.4
D Dissipation (factored at 1kHz) 0.0025
Nt Thickness Frequency Constant (kHz-in)
(Hz-m)		 86
2180
Np Planar Frequency Constant (kHz-in)
(Hz-m)		 98
2490
ρ Density (g/cm3) 7.7
ZA Acoustic Impedance (Mega RayL) 34
Vs Sound Velocity (m/sec) 4360
TC Curie Temperature (°C) 330
CTE Coefficient of Thermal Expansion (x 10-6 in/in/°F)
(20°C to 250°C)		 1.7
dave Average Grain Size (mm) 5 - 7

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