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Piezo Cylinder (Tube)

Piezo Cylinder
Characteristic Type I Type II
Relative Dielectric Constant/K 1300 1800
Dielectric DissipationFactor / tan δ (%) 1.0 2.0
Curie Point / T(°C) 320 300
Electromechanical CouplingFactor / k31 (%) >0.30 >0.35
PiezoelectricCharge Constant (pC/N)
d33      280 330
-d31      120 175
Density / ρ (g/cm3) 7.5 7.5
Mechanical Quality Factor / Qm 600 85
  • selection of standard dimensions
  • highest purity lead zirconate titanate ceramics
  • custom compositions / dimensions / electrode placement
  • high volume production capability
  • competitive pricing
  • fast delivery

Typical Applications of Piezo Tubes

  • fiber optics
  • scanning electron microscopes

Custom Designed and Engineered Piezo Cylinders (Tubes)

To meet your unique specifications, APC International can manufacture piezo cylinders (tubes) in a wide range of sizes and thicknesses and out of materials other than our standard cylinder materials. To discuss your requirements, contact an APCI representative with your drawing or sketch including: tolerance values, material, and electrode pattern.

Standard Piezo Cylinders (Tubes)

The materials used in APC's standard piezo cylinders are specially formulated for cylinders. APC's Type I and Type II materials are high density, fine grain, PZT ceramics that exhibit a high dielectric constant, high electromechanical coupling factor, high charge sensitivity, and a high Curie point (See Material Specifications). Clean responses make these ceramic materials ideal for various low-power and high-power piezo devices:

Characteristic Type I Type II
Relative Dielectric Constant/K 1300 1800
Dielectric DissipationFactor / tan δ (%) 1.0 2.0
Curie Point / T(°C) 320 300
Electromechanical CouplingFactor / k31 (%) >0.30 >0.35
PiezoelectricCharge Constant (pC/N)
d33      280 330
-d31      120 175
Density / ρ (g/cm3) 7.5 7.5
Mechanical Quality Factor / Qm 600 85
  • ultrasonic or doppler flow meters
  • gas flow sensors
  • other flow or level sensors
  • sensors for ultrasonic NDT / NDE applications
  • sensors for inspecting construction materials, welds, etc. in automotive, structural, and other applications
  • various high-power applications

Electrodes are located on the inside surface (ID) and outside surface (OD) of the cylinder. The piezo cylinders (tubes) are poled through the wall thickness with the ID being positive. Please inquire about other poling options.

APCI
Catalog No.
Material Dimensions(mm)
Capacitance at 1kHz
(pF)
Resonance Freq. (kHz)
Coupling Coef.
K31
OD ID length length thickness
42-1001 Type II 6.35 ± 0.15 4.9 ± 0.15 6.35 ± 0.15 2,500 260 2,760 0.35
42-1006 Type II 10.0 ± 0.15 8.0 ± 0.15 10.0 ± 0.15 4,500 165 2,000 0.35
42-1011 Type II 15.5 ± 0.15 11.2 ± 0.15 18.0 ± 0.15 5,500 92 930 0.35
42-1021 Type II 19.0 ± 0.15 16.0 ± 0.20 20.0 ± 0.15 11,600 83 1,330 0.35
42-1031 Type II 22.0 ± 0.15 16.0 ± 0.20 20.0 ± 0.15 6,300 82 670 0.35
42-1041 Type II 30.0 ± 0.20 26.0 ± 0.20 20.0 ± 0.15 14,000 83 1,000 0.35
42-1051 Type II 38.0 ± 0.20 34.0 ± 0.20 25.0 ± 0.15 22,500 66 1,000 0.35
42-1061 Type II 44.0 ± 0.25 38.0 ± 0.25 30.0 ± 0.15 20,500 55 670 0.35
42-1081 Type II 68.0 ± 0.35 60.0 ± 0.30 25.0 ± 0.15 20,000 66 500 0.35
42-1091 Type II 85.0 ± 0.35 77.0 ± 0.30 30.0 ± 0.15 30,400 55 500 0.35
42-2001 Type I 6.35 ± 0.15 4.9 ± 0.15 6.35 ± 0.15 1,900 283 3,000 0.30
42-2006 Type I 10.0 ± 0.15 8.0 ± 0.15 10.0 ± 0.15 3,500 180 2,180 0.30
42-2011 Type I 15.5 ± 0.15 11.2 ± 0.15 18.0 ± 0.15 4,300 100 980 0.30
42-2021 Type I 19.0 ± 0.15 16.0 ± 0.20 20.0 ± 0.15 9,100 90 1,400 0.30
42-2031 Type I 22.0 ± 0.15 16.0 ± 0.20 20.0 ± 0.15 4,900 85 700 0.30
42-2041 Type I 30.0 ± 0.20 26.0 ± 0.20 20.0 ± 0.15 10,900 85 1,040 0.30
42-2051 Type I 38.0 ± 0.20 34.0 ± 0.20 25.0 ± 0.15 17,500 68 1,040 0.30