6.8Mhz Piezoelectric Ceramic Ring is 28×9×0.3mm，with Silver electrodes on both sides.
- Model：HCPP4R289T003
- Piezo Material: PZT-4
- Dimensions: OD 28 x ID 9 x Th 0.3mm
- Resonant frequency fr: 6.8MHz±5%
- Electromechanical coupling coefficient Keff: ≥45%
- Resonant Mode: Thickness mode vibration application
- Resonant impedance Zm: ≤1.5 Ω
- Static capacitance Cs: 22000pF±15%@1kHz
- Test Condition: 23±3 °C 40~70% R.H.
- fr, Zm, Kp => Thickness mode vibration application
- Cs => LCR meter at 1KHz 1Vrms
6.8Mhz Piezoelectric ceramic ring Applications: Bolt-clamped ultrasonic transducer, Ultrasonic Sensor, Vibration Sensor, Pressure sensor, Vibration generation.