Our langevin transducers uesed by chinese nuclear power plant now. We can provide ODM for your ultrasonic system  Main Features High Mechanical Quality factor and excellent electro-acoustic conversion efficiency, providing high output amplitude. Piezoelectric element offer a high speed of vibration. Through bolt-on presstress, mechanical and amplitude have been improved. Having steady output amplitude even under markedly changed loads. Extended temperature use, ensuring good amplitude linearity. Low resonant impedance ensuring high conversion efficiency.  Bolt-on pre-stressed design provides fast and easy installation with high reliability. Product Coding Transducers for Ultrasonic Cleaning Selection Chart  

Part Number	Res Freq	Res Imp	Cap	Diam	Span	Power
Units	kHz	Ohm	pF	mm	mm	W
STC-4AH-2080	80±2	<25	1800 ±10%	24	26	25
STC-4AH-3050	50±1	<20	3400 ±10%	38	40	40
STC-4SS-3528	28±1	<20	3800 ±10%	45	80	50
STC-4SH-3528	28±1	<20	4000 ±10%	55	68	50
STC-8SH-3528	28±1	<20	2900 ±10%	55	68	50
STC-4AH-3540	40±1	<20	3800 ±10%	45	54	50
STC-4SH-3540	40±1	<20	4000 ±10%	45	50	50
STC-8SH-3540	40±1	<20	2900 ±10%	45	50	50
STC-8SH-3560	60±2	<20	2900 ±10%	40	38	50
STC-4SH-3825	25±1	<20	4800 ±10%	59	72	60
STC-4SH-3828	28±1	<20	4800 ±10%	59	67	60
STC-8SH-3828	28±1	<20	3200 ±10%	59	68	60
STC-4SH-3833	33±1	<20	4800 ±10%	48	60	60
STC-8SH-3833	28±1	<20	3200 ±10%	48	60	60
STC-8SH-3838	38±1	<20	3200 ±10%	48	54	60
STC-4SH-3840	40±1	<20	4800 ±10%	48	50	60
STC-8SH-3840	40±1	<20	3400 ±10%	48	50	60
STC-4SS- 38130	130±2	<20	4800 ±10%	40	54	60
STC-8SS- 38130	130±2	<20	3200 ±10%	38	57	60
STC-8SH-4525	25±1	<20	5100 ±10%	67	72	80
STC-8SH-4528	28±1	<20	5100 ±10%	67	68	80
STC-4SS-4530	30±1	<20	7200 ±10%	45	82	80
STC-8SS-4530	30±1	<20	5100 ±10%	45	82	80
STC-4SH-5025	25±1	<20	9000 ±10%	67	77	100
STC-8SH-5025	25±1	<20	6500 ±10%	67	77	100
STC-4SH-5028	28±1	<20	9000 ±10%	67	70	100
STC-8SH-5028	28±1	<20	6500 ±10%	67	70	100

Piezoelectric ceramic Transducer