• Keyword :

Zibo Yuhai Electronic Ceramic Co., Ltd.
(Originally, Zibo Wireless Ceramic Factory)
Address :  No.57 Chuangye Road, Development Area Boshan, Zibo City, Shandong Prov. P.R. of China 
Tel : +86-0533-4230012      
Fax : +86-0533-4231700
Email :

Product details
  • Product name: lead free piezoelectric ring Φ50.45×Φ9.28×200khz
  • Product number: BT Φ50.8×Φ9.28×200khz
  • Date: 2016-12-23
  • Views : 89

Barium titanate lead-free piezoelectric ceramics are important basic materials for the development of modern science and technology, which was widely used in the manufacture of ultrasonic transducersunderwater acoustic transducers, electroacoustic transducers, ceramic filters, ceramic transformers, ceramic frequency discriminators, high voltage generators, infrared detectors, surface acoustic wave devices, electro-optic devices, ignition and detonation devices, and piezoelectric gyroscope and so on. 


Lead free Piezo ceramic ring





Application: ultrasonic underwater transducer

Piezoelectric Ceramic Material:  BaTiO3 (lead free)


Piezoelectric elements technical data:

Dimensions:  OD 50.8mm, ID9.28mm, height 14-17mm(according to the frequency 200KHz)

Thickness Frequency Fr: 200KHz ± 5 KHz

Frequency Bandwidth ΔF>6.5KHz

Resonate Impedance R ≤ 20 Ω
Dielectric Loss tg δ: <0.6%

Static capacitance Cs: 1650pF±12.5%

Piezoelectric constant d33 ≥ 140 


Test Condition: 25±3 °C 40~70% R.H.
fr, Zm, Kr => Radial mode vibration
Cs tanδ => LCR meter at 1KHz 1Vrms


Application:  military, ocean, fishery, scientific research, mine detection, daily life and other fields.


China Patent of Yuhai company`s BaTiO3

Chinese Patent No.: ZL 2011 1 0126758.6   

Name: Lead-free Barium Titanate Piezoelectric Material with Addition of Cobalt and Aluminum 

lead free piezo ceramic




Typical value of piezoelectric ceramic materials performance  
Lead free piezo material BaTiO3   Lead-free Material
Properties     BaTiO3
Dielectric Constant ɛTr3   1260
Coupling factor  KP   0.34
  K31   0.196
  K33   0.43
  Kt   0.32
Piezoelectric coefficient d31 10-12m/v -60
  d33 10-12m/v 160
  g31 10-3vm/n -5.4
  g33 10-3vm/n 14.3
Frequency coefficients Np   3180
  N1   2280
  Nt   2675
Elastic compliance coefficient Se11 10-12m2/n 8.4
Machanical quality factor Qm   1200
Dielectric loss factor Tg δ % 0.5
Density ρ g/cm3 5.6
Curie Temperature Tc °C 115
Young's modulus YE11 <109N/m3 119
Poison Ratio     0.33












ε 33 T , ε 11 T


Free Relative Dielectric Constant


ε 33 S , ε 11 S


Clamping Relative Dielectric Constant



Dissipation Factor at Low Field




g/cm 3

T c

Curie Point





Z a

Accoustic Impedance


K p, K 33, K t, K 31, K 15

Electromechanical Coupling Factors


N p , N 33, N 31, N 15, N t, N c


Frequency Constants

Hz - m


d 33, d 31, d 15

Piezoelectric Strain Constants


10 -12 C/N


d h

Hydrostatic Piezoelectric Strain Constants


10 -3 Vm/N

Q pm

Mechanical Quality Factor at Planar mode


Y 11 E , Y 33 E

Young's Modulus under Short Circuit

10 10 N/m 2


Poisson Ratio



ε 33 T (% Per Decade)

Aging Rate of Free Relative Dielectric Constant


K p (% Per Decade)

Aging Rate of Planar Electromechanical Coupling Factor



K t (% Per Decade)

Aging Rate of Coupling Factor at Thickness mode



N p (% Per Decade)

Aging Rate of Frequency Constant of Planar Mode



N t (% Per Decade)

Aging Rate of Frequency Constant at Thickness Mode



ε 33 T ( / o C)

Thermal Stability of Free Relative Dielectric Constant







Barium Titanate


Hard PZT

Hard Lead Titanate Zirconate Compound



Soft PZT

Soft Lead Titanate Zirconate Compound


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