Piezo Ring 10x5x2mm 154 KHz SM118

Part Number: SMR1005T20118

Piezoelectric Ceramic Ring with Silver electrodes on both sides.

Piezo Material: SM118
Dimensions: OD 10 x ID 5 x Th 2mm
Resonant frequency fr: 154KHz ± 4KHz
Electromechanical coupling coefficient Keff: ≥32%     
Resonant Mode: Radial mode vibration application
Resonant impedance Zm: ≤40 Ω
Static capacitance Cs: 260pF±15%@ 60Hz/1V
Test Condition: 23±3 °C 40~70% R.H.
fr, Zm, Kp => Radial mode vibration application
Cs => LCR meter at 1KHz 1Vrms

Applications: Ophthalmic Devices, Bolt-clamped ultrasonic transducer, Ultrasonic Sensor, Vibration Sensor, Pressure sensor, Vibration generation, Biodiesel mixing transducer, Piezo expansion sensor, compression sensor, Piezo Welding, Tonpilz Transducer and others. and others.
Notes: Keff = ≥32%. Keff is calculated by the formula, ((fa2-fr2)/fa2), and fa is the anti-resonant frequency of the hoop mode.