Ferrite core two-part round cable ferrite, brand Ferrite Core, model 809, for cable Ø 9 mm

Two-part round cable ferrite (model 809) for cable Ø 9 mm is a clip-on EMI suppression core engineered to reduce electromagnetic interference on power and signal lines. The two-part design snaps around the cable without requiring disconnection, providing added attenuation of high-frequency noise and improving signal integrity for connected equipment. Its compact round shape and ferrite composition make it suitable for use on individual cables in consumer electronics, professional equipment, and industrial installations where space is limited.

Advantages

The two-part, snap-on construction enables quick retrofitting and repositioning along the cable with minimal downtime. The ferrite material provides broadband suppression of high-frequency interference while maintaining low insertion loss at operating frequencies of the connected system. Its round profile for cables with a 9 mm diameter ensures consistent contact and effective attenuation without crushing or deforming the cable jacket. The product is mechanically simple, corrosion-resistant, and does not require power or maintenance.

Suitable for

• Power cords and mains leads with 9 mm diameter
• Signal cables such as audio, video, and data leads
• Retrofit on existing wiring in home AV systems and office equipment
• Industrial control and instrumentation cables where EMI mitigation is needed
• Temporary or permanent installations requiring easy-to-fit suppression

Key specifications

• Form factor: two-part snap-on ferrite core
• Shape: round
• Designed cable diameter: 9 mm (Ø 9 mm)
• Material: ferrite composite for high-frequency attenuation
• Typical application: EMI/RFI suppression on power and signal lines
• Mounting: clip-on, no tools required
• Environmental: stable for indoor use; resistant to common mechanical wear

How to use

Open the two-part ferrite core, position the cable inside the circular opening designed for Ø 9 mm conductors, and snap the two halves together until they click to ensure secure closure. For increased attenuation, place multiple cores in series or position the ferrite near the equipment connector or the source of interference. Ensure the cable follows its normal routing without excessive bending at the ferrite location to preserve cable integrity and maintain consistent contact between the ferrite inner surface and the cable jacket.

Usage recommendations

Place the ferrite core as close as practical to the noise source or the affected equipment connector; if interference persists, use additional cores spaced along the cable. Avoid installing on cables with insulating layers or connector boots that prevent close contact with the ferrite. For outdoor or harsh environments, consider additional protective measures as the product is intended primarily for indoor installations.