Clip-on Ferrite Cores (Cable EMI Filters) | High Current Power Inductor Manufacturer | Coilmaster Electronics
Manufacturer of Clip-on ferrite core, cable EMI suppression ring core, split noise filter. Clip-on ferrite cores—also known as clamp-on or split ferrite cores —are common-mode noise filters specifically designed for cable assemblies. The structure consists of two semi-circular ferrite halves enclosed in a durable plastic housing, allowing installation without cutting the cable. This makes them ideal for after-assembly integration or field-level EMI troubleshooting. When mounted on a cable, the core absorbs high-frequency common-mode noise generated by connected devices, helping to stabilize signal integrity and improve system EMC (Electromagnetic Compatibility) performance. Coilmaster Electronics is a high-current High Current Power Inductors, Automotive Grade Chokes & Inductors,High Frequency and Planar Transformers, LAN Magnetics (RJ45), Multilayer Chip Beads manufacturer from Taiwan since 1995. Coilmaster offers AEC-Q200 certified, high-efficiency power inductors, chokes, and transformers. Specializing in low-loss, high-current components for Automotive, 5G, and Industrial applications. Contact our experts for instant support. With more than 20 years of experience in magnetic territory, Coilmaster Electronics is specialized in the production of SMD power inductors, common mode choke, high frequency transformers.
Clip-on Ferrite Cores (Cable EMI Filters)
Clamp-on / Clip-on Ferrite Cores for Non-Intrusive Cable EMI Suppression
Clip-on ferrite cores—also known as clamp-on or split ferrite cores —are common-mode noise filters specifically designed for cable assemblies. The structure consists of two semi-circular ferrite halves enclosed in a durable plastic housing, allowing installation without cutting the cable. This makes them ideal for after-assembly integration or field-level EMI troubleshooting. When mounted on a cable, the core absorbs high-frequency common-mode noise generated by connected devices, helping to stabilize signal integrity and improve system EMC (Electromagnetic Compatibility) performance.
The clip-on EMI ring core functions as a common-mode choke, suppressing only common-mode noise and does not affect differential-mode currents, ensuring that normal data or power transmission is not disturbed. It supports a wide range of cable diameters from 5 mm to 13 mm, with custom sizes available upon request. Coilmaster provides both Ni-Zn and Mn-Zn ferrite materials to match different noise frequency ranges—Ni-Zn is effective for high-frequency (>30 MHz) suppression, while Mn-Zn performs better for low-frequency (<30 MHz) EMI applications. This series is also suitable for automotive applications where reliable EMI suppression is required.
Ferrite Core Material Selection Based on Noise Frequency
Available in Ni-Zn (Nickel-Zinc) for optimal attenuation in the high-frequency range, and Mn-Zn (Manganese-Zinc) for better performance in the low to mid-MHz EMI suppression range. Selecting the correct material allows engineers to precisely target their working frequency requirements, maximizing noise filtering effectiveness.
Installation Advantage for EMC Debugging and Field Service
Characteristic
EMI/RFI suppression for external cable assemblies.
Designed specifically for common-mode noise filtering.
Rugged construction with durable latch for long-term use.
Hinged clamp for easy, non-intrusive cable installation.
Ni-Zn and Mn-Zn material options for frequency targeting.
Supports standard FCC / VDE compliance testing.
Features
- Installs without cutting or disconnecting the cable.
- Supports multiple cable diameters (5 mm to 13 mm).
- High-efficiency common-mode choke function.
- Ni-Zn or Mn-Zn ferrite options for different frequency targets.
- Ideal for post-assembly or field installation.
Applications
- External cable noise suppression and interface line filtering.
- Digital equipment and interface lines (USB, HDMI, DisplayPort).
- Consumer electronics and industrial equipment requiring RFI mitigation.
- Automotive harness EMI reduction and RFI shielding.
- Field-level EMI debugging and compliance troubleshooting.
| Image | name | Size(mm) | Inductance(uH) | Isat(A) | Irms(A) | DCR(mΩ) | Action |
|---|---|---|---|---|---|---|---|
| Clamp filter | 15x14.0x23.0 | |||||
|
| Clip on EMI ring core | 20.5x20.0x33.0 | |||||
|
| EMI Suppression Ferrite Cores | 25.5x23.5x33.0 | |||||
|
| Clamp ferrite core | 31.5x30.0x33.0 | |||||
| Ferrite flat cables | 13.0x11.8x25.5 | |||||
|
| EMI flat cables ferrite core | 15.5x14.0x22.0 | |||||
|
| Flat cables ferrite core | 19.5x18.0x35.5 | |||||
|
| EMI Suppression flat cables ferrite core | 20.5x19.5x35.5 | |||||
|
| EMI filter | 20.5x21.0x36.0 | |||||
|
| Ferrite common mode filter | 23.5x22.5x36.0 | |||||
|
| Cable Clamp EMI Suppression | 19.5x23.0x23.0 | |||||
|
| Ferrite core with plastic case | 19.5x23.0x26.0 |
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Clip-on Ferrite Cores (Cable EMI Filters) | High Current Power Inductor Manufacturer | Coilmaster Electronics
Located in Taiwan since 1995, Coilmaster Electronics Co., Ltd. has been a manufacturer of magnetic components. Its main magnetic components include, Clip-on Ferrite Cores (Cable EMI Filters), common mode chokes, SMD molding power chokes, chock coil inductors, SMD shielded and semi-shielded power inductors, low profile and high current power inductors, high voltage power inductors, ethernet and LAN power transformers, flat wire inductors, RJ45 jacks with integrated magnetics and high frequency transformers, and ceramic or air coil multilayer chip inductors.
Coilmaster offers AEC-Q200 certified, high-efficiency power inductors, chokes, and transformers. Specializing in low-loss, high-current components for Automotive, 5G, and Industrial applications. Contact our experts for instant support. With more than 20 years of experience in magnetic territory, Coilmaster Electronics is specialized in the production of SMD power inductors, common mode choke, high frequency transformers.
Coilmaster Electronics has been providing customers with high current power inductors since 1995, with both advanced technology and 29 years of experience, Coilmaster Electronics ensures that each customer's requirements are met.