Part Number: SMD25T21F1000RPiezo Electric Ceramic Disc Transducer. Both electrodes on one side (R configuration). Thickness mode vibration applicationPiezo Material: SM111Dimensions: 25mm diameter x 2.1mm thicknessResonant frequency fr: 1MHz ±50 KHz Electromechanical coupling coefficient Kp:≥58%Resonant impedance Zm: ≤4 ΩStatic capacitance Cs: 2800pF±15%@1kHzTest Condition: 23±3 °C 40~70% R.H.fr, Zm, Kp => Thickness mode vibration applicationCs => LCR meter at 1KHz 1VrmsApplications: Ultrasonic Sensor, Vibration Sensor, Thickness sensor, Material Stress Sensor, Pressure Sensor, Vibration generation, Massage applications and others.
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