BM527

BM527 - Lead Zirconate Titanate

Overview
BM527 is a modified version of BM500 and has a higher capacitance per unit volume. BM500 series ceramics are Lead Zirconate Titanates with high coupling coefficients and piezoelectric charge coefficient. These materials find application in passive devices and low-power resonators.

Features

  • High coupling coefficient
  • High piezoelectric charge coefficient

Applications

  • Passive devices
  • Low power resonators
  • Hydrophones
  • Communication
  • Sonobuoys
  • Linear arrays
  • Level, flow measurement
  • Accelerometers


 

PROPERTY SYMBOL BM527 UNITS
Electrical1      
Relative Dielectric Constant   KT33 2750 —
Dissipation Factor   Tan d 2 %
Piezoelectric
Coupling Factor   kp 0.62 —
  k31 0.37 —
  k33 0.72 —
Charge Constant   d31 -215 10-12 C/N
  d33 500 10-12 C/N
Voltage Constant   g31 -9.5 10-3 Vm/N
  g33 22 10-3 Vm/N
Mechanical Quality Factor   QM 70 —
Frequency Constants 2   Np 2050 Hz.m
  N1 1400 Hz.m
  N4 1850 Hz.m
Elastic Modulus
Compliance   SE11 14.5 10-12 m2 /N
  SE33 19.5 10-12 m2 /N
Density   r 7.6 g/cm3
Curie Temperature   Tc 225 °C
Ageing Characteristics 3 (% change/time decade)
Coupling Factor   kp -1 —
Dielectric Constant   kT33 -1 —
Frequency Constant   Np

1

 Hz.m

BM527 - lead zirconate titanate

BM527 - lead zirconate titanate

Notes:
1  Low field parameters;
    measured at 1 KHz

2  NP - Planar
    N1 - Longtitudinal
    N4 - Thickness

3  Reference point of time;
    24 hours after polarization