EMI Ferrite / Ferrite Core

Nearly 40 years ago, KITAGAWA INDUSTRIES designed plastic casings for clamp-type ferrite cores. Since then, KGS has incorporated a wide range of ferrite cores with excellent impedance performance for EMI mitigation and suppression. They can even be used to suppress a small amount of ESD!

While the ferrite’s shape factor (ratio between the middle diameter and cross-sectional area) will largely determine the impedance performance, other variables should be considered during the ferrite core selection and testing process. These variables include the device’s problematic frequency (target frequency), length of the cable, location of the ferrite on the cable, whether the cable will be turned around the ferrite core, type of noise to be suppressed (common mode vs differential mode), as well as the formulation of the ferrite material that will work best for the target frequency.

KGS America offers an extensive array of ferrites including clamp-type (also known as split-type or two-piece cores), single-piece type (includes sleeve and toroidal shapes), flat cable cores (in both split and single-piece), flexible ferrite cores (for delicate cables and portable devices), broadband amorphous cores, and automotive-grade cores that can withstand high temperatures and high vibration environments.

Ferrite Cores for Cable Noise

KITAGAWA INDUSTRIES America Inc. offers a variety of EMI Ferrite Cores for cable noise solutions on round cables, flat cables, ribbon cables, FPC cables and so on. These environmental friendly and cost effective G cores come in one piece solid core types, split types that have two halves, and split type cores with plastic casings.

Ferrites for use on cables and harnesses inside vehicles. PPAP-ready, tested, and approved for automotive industry use.

RFC-A Series

Automotive grade ferrite clamp with excellent heat resistance. Split-type ferrite core designed for easy installation to terminated cables.

RFCW Series

Ferrite clamp that can withstand engine compartment conditions. Excellent low frequency noise suppression (150 KHz~30MHz).

BFCW-A, BFCW-MA Series

Low profile provides 30% space saving compared with the conventional type. Housing with anti-slip means for cable tie around its outer side.

These high-performance ferrite cores for round cables come in three types of materials: nickel-zinc and magnesium-zinc. They are great to clamp onto terminated cables and are available with different types of plastic casings.

RFC Series

Ferrite assembly in fully enclosed Nylon 6/6 case, can be installed as a single add-on component by snapping.

RFC-A Series

Automotive grade ferrite clamp with excellent heat resistance. Split-type ferrite core designed for easy installation to terminated cables.

RFC-MA Series

Ferrite clamp with excellent heat resistance, effective for prevention of conducted/radiated noise in low-frequency range.

RFCW Series

Ferrite clamp that can withstand engine compartment conditions. Excellent low frequency noise suppression (150 KHz~30MHz).

BFCW-A, BFCW-MA Series

Low profile provides 30% space saving compared with the conventional type. Housing with anti-slip means for cable tie around its outer side.

GRFC Series

G Ferrite Core – No nickel and competitively priced. Employ high-performance ferrites (Nickel-Zinc) effective against high frequency noise.

GTFC Series

High performance Nickel-Zinc ferrite cores for effective common mode EMI suppression. Split toroidal core fully enclosed in a Nylon 6/6 snap-on clamp case.

GTFCK Series

Incorporated spring (stainless steel-SUS 304-CSP) insures permanent tight contact of the two-sleeve core halves for consistent performance.

Toroidal Cores with Removable Fixture: GTFCR Series

Nickel-free – Toroidal cores with removable fixture. Material: Soft Ferrite, Housing: PA66, Color: Light gray, Flammability: UL94V-0, Operating Temperature: -40 ~ 85°C

KRFC Series

Split-core ferrite clamp designed to filter noise from around 3 ∼ 50 MHz. Effective suppression of conducted noise up to 30MHz and radiated noise over 30MHz.

MRFC Series

Effective solutions for suppression of disturbance from switching power supply and motor.

These high-performance ferrite cores for round cables come in three types of materials: nickel-zinc and magnesium-zinc. They can be easily slid onto non-terminated cables. They come in a variety of sizes and our low frequency (KHz) ferrite cores come with epoxy coating as well.

GRI Series

Suitable for insertion on round cables and wire bundles, in a single or multiple turns, before the final cable assembly. The sleeve cores can be permanently attached to cables by thermostatic resin molding or heat shrink tubing.

GTR Series

Ferrite clamp that can withstand engine compartment conditions. Excellent low frequency noise suppression (150 KHz~30MHz).

GTRE Series

Ferrite Clamp for Easily Attachable and Removable by One Hand. High performance Nickel-Zinc ferrite cores for effective common mode EMI suppression.

KTR Series

Single, solid toroidal core formulated to target 3 ~ 50MHz (mid-frequency range). Gray epoxy coating for easy identification and to prevent electrical short.

BRE Series

High-performance, broadband EMC noise suppression core. Amorphous metal core, effective for suppression of conducted and radiated broadband noise from around 1MHz~100MHz.

BREK Series

High-performance noise suppression cores with secure screw-mounts for fixation. Stable suppression effect of conducted and radiated noise across a wide frequency range and temperature range.

MPTR Series

Due to higher magnetic flux density, current superposition (current at 20A or less) will not lower the impedance. Resin-coated core to protect cables.

TRM Series

“Mn” ferrite cores, suitable solutions for conductive and radiation noise in low frequency range.

TRCB Series

Effective noise filter for suppressing low-frequency noise in kHz to MHz range with the higher impedance characteristics.

GRIP Series

Soft ferrite core for lead components. Natural grip of silicone-rubber covering allows for easy installation.

KITAGAWA INDUSTRIES America also offers ferrite cores that have high impedance at the KHz range. While TRM and TRMH are one piece types, RFC-MA is a split type to go around terminated cables. TRM and TRMH also come with an epoxy coating. Made with combinations of nickel-zinc and manganese-zinc, they come in a variety of different sizes to fit various round cables.

TRM Series

“Mn” ferrite cores, suitable solutions for conductive and radiation noise in low frequency range.

TRMH Series

Most suitable ferrite core for suppressing conductive noise at 1 MHz or less.

TRCB Series

Effective noise filter for suppressing low-frequency noise in kHz to MHz range with the higher impedance characteristics.

MRFC Series

Effective solutions for suppression of disturbance from switching power supply and motor.

RFC-MA Series

Ferrite clamp with excellent heat resistance, effective for prevention of conducted/radiated noise in low-frequency range.

RFCW Series

Ferrite clamp that can withstand engine compartment conditions. Excellent low frequency noise suppression (150 KHz~30MHz).

These high-performance ferrite cores for flat cables come in two types of materials: nickel-zinc, magnesium-zinc. They come with two pieces or split type and can be easily applied over terminated cables. They come in a variety sizes, and KITAGAWA INDUSTRIES America offers a patented flexible version that is thin, light, and durable.

BCN Series

Larbor-saving assembly and fixing by combination with plastic clamp.

FFPC Series

Larbor-saving assembly and fixing by combination with plastic clamp.

GFPH Series

Split core for convenient fitting on pre-wired cables.

GFPO Series

Open magnetic circuit structure provides high impedance with close contact on FPC.

Split Ferrite Core For Flat Cable: GSSH Series

Split core type for easy assembly on wired or connected cables.

These high-performance magnesium-zinc ferrite cores are designed to provide high performance for flat cables. They come as one whole piece in a variety of different sizes to be slid over non-terminated cables.

Solid Ferrite Cores for Flexible Circuit: GFPC Series

Suitable solutions for FPC noise problems.

Solid Ferrite Cores for Flat Cables: GSSC Series

Noise suppression for ribbon cables.

KITAGAWA INDUSTRIES America Inc. offers EMI ferrite tiles (SD tiles) and flexible ferrite sheets (FFS series) for emission noise and coupling issues caused by CPUs/ICs. The Ferrite sheets also work for RFID malfunctions to correct the magnetic loop emitted so that RFID readers can work properly. Overall they increase the reading range as well by gathering magnetic field to strengthen the signals to read tags and other items. KITAGAWA INDUSTRIES America Inc.’s FFS flexible ferrite sheets are very thin and flexible to be applied into the applications such as RFID, NFC (near field communication), and NFP (near field power) applications.

Flexible Ferrite Sheets

KITAGAWA INDUSTRIES America carries very thin and flexible ferrite sheets used for many applications including EMI absorbing in the low MHz range, RFID, NFC, and NFP applications working at 13.56 MHz.

FFS Series

High performance noise suppression ferrite sheet, targets low frequency noise around 1MHz.

FFSX Series

EMI flexible noise suppression ferrite sheet, engineered for both RFID/NFC and Rezence wireless charging.

FFSW / SDK15 Series

Very thin and flexible ferrite tile, ideal for low frequency wireless charging.

FFPC Series

Thin Ferrite Sheet provides optimal EMC soution for FPC (Flexible Printed Circuit) and FFC (Flexible Flat Cables).

Ferrite Core Tiles

KITAGAWA INDUSTRIES America Inc.’s standard ferrite tiles are high-performance nickel-zinc flat ferrite materials for EMI absorption or suppression depending on series. They come in a variety of different sizes for various applications.

EMI Suppression Ferrite Tiles: SD Series

High performance, sintered ferrite tiles for CPU’s high density.

  • Our ferrite materials products are used in a wide range of application field