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Model	Dimensions	Electrical capacitance	Electromechanical coupling coefficient	Resonant Frequency	Equivalent Resistance
	D×t	@1KHz、1V	Kp	Fr	R₀
	[mm]	[nF] ±25%	[%]	[MHz] ±5%	[Ω]
KLJ28-2.04-1	Φ28×2.04	3	≥52	1	≤3.5Ω
KLJ28-1.02-1	Φ28×1.02	6	≥54	2	≤3.5Ω
KLJ25-0.41-1	Φ25×0.41	12.3	≥56	5	≤2.5Ω
KLJ20-0.41-1	Φ20×0.41	7.9	≥56	5	≤2.5Ω
KLJ20-0.67-1	Φ20×0.67	5.2	≥56	3	≤2.5Ω
KLJ16-0.41-1	Φ16×0.41	2.45	≥48	5	≤3.5Ω

Model	Dimensions	Electrical capacitance	Electromechanical coupling coefficient	Resonant Frequency	Equivalent Resistance
	D×t	@1KHz、1V	Kp	Fr	R₀
	[mm]	[nF] ±25%	[%]	[MHz] ±5%	[Ω]
KLJ28-2.04-1	Φ28×2.04	3	≥52	1	≤3.5Ω
KLJ28-1.02-1	Φ28×1.02	6	≥54	2	≤3.5Ω
KLJ25-0.41-1	Φ25×0.41	12.3	≥56	5	≤2.5Ω
KLJ20-0.41-1	Φ20×0.41	7.9	≥56	5	≤2.5Ω
KLJ20-0.67-1	Φ20×0.67	5.2	≥56	3	≤2.5Ω
KLJ16-0.41-1	Φ16×0.41	2.45	≥48	5	≤3.5Ω

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Piezoelectric Ultrasonic Transducer for Beauty Instrument