New common mode choke with ferrite core structure reduces radiated noise and achieves excellent EMI suppression performance

Riverside, Calif. — October 15, 2025 — Bourns, a leading manufacturer of electronic components for power, protection, and sensing solutions, has announced the release of the SRF1709 model, a high-inductance common mode choke. This new product features a ferrite toroidal core, providing an effective solution for power line noise reduction by reducing radiated noise.

The RF1709 features a high inductance of 3.5mH, a current rating of 2.5A, and an operating temperature range of –40°C to +85°C. These advanced features effectively suppress EMI from both input and output directions within the system, making it ideal for consumer, industrial, and other electronic device designs.

The Bourns® SRF1709 Common Mode Choke is currently available and is RoHS compliant(※1) and halogen-free(※2).

For more information, please visit the Bourns website.

　※1：RoHS Directive 2015/863, Mar 31, 2015 and Annex.
※2：Bourns considers a product to be "halogen free" if (a) the Bromine (Br) content is 900 ppm or less; (b) the Chlorine (Cl) content is 900 ppm or less;
　　   and (c) the total Bromine (Br) and Chlorine (Cl) content is 1500 ppm or less.

product page

For more information on common mode chokes in general and the SRF1709 common mode choke, visit the Bourns page.

• Common Mode Choke Products
• SRF1709 Common Mode Choke

Inquiry / Quotation

If you have any questions about this product or would like a quote, please contact us below.