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Standard Tolerances

Ceramic Elements
OD/ID/lateral dimensions +/- 0.005″
Thickness +/- 0.001″
Frequency <10 MHz +/- 5%
10 MHz-15 MHz +/- 7.5%
>15 MHz +/-10%
Capacitance +/- 20%
Coupling expressed as a minimum
Dielectric loss (tan δ) expressed as a maximum
d33 and other Piezo coefficients +/- 10% when measured on standard geometries
Electrodes - fired Silver or Gold nominal 0.00035″
Electrodes - sputtered nominal 500 Angstroms Chrome + 5000 Angstroms Gold

Composite Elements
Missing posts <2 MHz 5%, >2 MHz 10%
Volume fraction +/- 10%
Frequency <5 MHz +/- 10%
5-7.5 MHz +/- 15%
>7.5 MHz +/- 20%
Blemishes, discolorations, scratches, flaking, pits, etc. <5% of surface area with no single flaw >2%
Insulation Resistance >1 MOhm @ 50 VDC
Electrodes - sputtered nominal 500 Angstroms Chrome + 5000 Angstroms Gold

Absolute Capabilities
OD/ID dimensions +/- 0.001″
Lateral dimensions +/- 0.0001″
Thickness +/- 0.00003″
Frequency +/- 1%
Capacitance +/- 1%


The values listed here are for reference purposes only, as they pertain only to specific test specimens. These values can't be applied to other dimensions and shapes without additional consideration. Values typically vary based on their thickness, specific shape, surface finish, shaping or fabrication process, post-processing, etc. Electrical measurements are made a minimum of 24 hours after poling, at 1 KHz and at low field per IEC, IEEE, ANSI, or Mil Std as appropriate.

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