This EI19 custom audio transformer is designed for audio signal transmission and telecom isolation applications. It is manufactured using high-quality materials and precision winding processes, ensuring stable signal transmission with high fidelity. The product features a robust and reliable structure, suitable for various communication and audio equipment. It is widely used in telephone systems, PABX private branch exchanges, modems, SMD fax modems, multimedia audio equipment, and telecom isolation applications. It is an ideal choice for signal transmission and isolation in the audio and communication fields.
1. Inductance: (1-2): 15H ±20%@1KHz,0.3V
(3-4)=(4-5): 100mH ±20%@1KHz,0.3V
2. RDC: (1-2): 382Ω±20%
(3-5): 34Ω±20%
3. Impedance ratio: (1-3):Sec 3kΩ:3kΩ
4. Hi-Pot: 500Vac,1mA,1S
5. Break down: More than 100MΩ 500V/DC
6. Operating temperature:-25 to +125°C
7. Storage temperature: -25 to +85°C
Telephone systems
PABX private branch exchanges
Modems
SMD fax modems
Multimedia audio equipment
Telecom isolation
Audio signal isolation
Communication equipment
![]()
It is Shinhom surviving lifeline to seek for customer satisfaction,which can be gained by a combination of superior quality,reasonable delivery time , competitive prices as well as customer-oriented services,so as to ensure that the turned out products measure up to customers,demands .
Q: What is the impedance ratio of this product?
A: The impedance ratio is 3KΩ:3KΩ, suitable for high-impedance audio signal transmission and telecom isolation applications, ensuring signal transmission efficiency and fidelity.
Q: What is the insulation performance of this product?
A: Insulation resistance is ≥100MΩ @500VDC, ensuring excellent electrical insulation performance and meeting the safety requirements of telecom and audio equipment.
Q: Does this product support customisation?
A: Yes. This product is a custom EI19 audio transformer. Specifications can be customised based on customer requirements. Please contact our sales team for details.