Barium Titanate Piezo Ring for Fishfinder 180KHz

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Product Attributes

Model No.: OD50.2*ID6.1*180KHz BaTiO3

Piezoelectric ceramic ring

Lead free Piezo Ceramic Ring

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 transducers, underwater 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.

Application: ultrasonic underwater transducer

Piezoelectric Ceramic Material: BaTiO3 (lead free)

Piezoelectric Elements technical data:

Dimensions: OD 50.2mm, ID6.1mm, height 14-17mm(according to the frequency 180KHz)

Thickness Frequency Fr: 180KHz ± 5 KHz

Frequency Bandwidth ΔF＞7.5KHz

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

Static capacitance Cs: 1350pF±12.5%

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

Typical value of Piezoelectric ceramic materials performance
Lead free piezo material BaTiO3			Lead-free Material
Properties			BaTiO3
Dielectric Constant	ɛ^T_r3		1260

Coupling factor	K_P		0.34
	K₃₁		0.196
	K₃₃		0.43
	K_t		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	N_p		3180
	N₁		2280
	N₃
	N_t		2675
Elastic compliance coefficient	S^e₁₁	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	Y^E₁₁	<10⁹N/m³	119
Poison Ratio			0.33

SYMBOL	DEFINITION	UNITS
ε 33 T , ε 11 T	Free Relative Dielectric Constant
ε 33 S , ε 11 S	Clamping Relative Dielectric Constant
tgδ	Dissipation Factor at Low Field
ρ	Density	g/cm 3
T c	Curie Point	ºC
V	Velocity	m/s
Z a	Accoustic Impedance	Mrayl
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
σ	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
GLOSSARY
BT	Barium Titanate
Hard PZT	Hard Lead Titanate Zirconate Compound
Soft PZT	Soft Lead Titanate Zirconate Compound

Product Categories : Lead Free Piezoelectric Elements > Lead Free Piezo Rings

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