Part Number: SMC4845T15121Piezoelectric Ceramic Cylinder. Radial vibration mode.Piezo Material: SM121Dimensions: Ext. Diam. 48.1 x Int Diam 45 x Height 15.6mmResonant frequency fr: 23 KHz±1.5 KHzElectromechanical coupling coefficient K31: <29 Dielectric Loss tg δ: <0.50%Resonant impedance Zr: ≤65.5ΩStatic capacitance Cs: 18400pF±20%@1kHzTest Condition: 23±3 °C 40~70% R.H.fr, Zm, Kr => Radial vibration modeCs tanδ => LCR meter at 1KHz 1VrmsApplications, among others, are: Piezo transducer for Underwater communication to send receive data and voice. It is also used for vibration, matter dispersion, biomedical probes, sonar, Hydrophone
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