EMI Ferrite Core

EMI FERRITE CORE, EMI SOFT FERRITE CORE, NiZn EMI FERRITE CORE, EMI hollow nickel zinc ferrite core China Factory

EMI FERRITE CORE are used for noise suppression and the prevention of abnormal oscillation in the relatively low frequency range of tens of kHz to hundreds of MHz. EMI FERRITE CORE consists of NiZn and exhibits higher resistivity than MnZn ferrite core, making it a more suitable choice for frequencies above 1 MHz.

HSMAG offers a diverse lineup of EMI ferrite cores in different shapes for varying applications. Our product range includes variants for flat cables as well as plates, sleeve, split, beads, rings, and multi-hole cores. Custom design available upon request.

WHY USING EMI FERRITE CORE

1.No grounding needed

Many noise suppression components that use capacitors are ineffective without a stable ground. Ferrite cores can suppress noise without grounding.

When passing through a ferrite core, a cable generates magnetic fields. The magnetic fields concentrate inside the core because ferrite can attract magnetic flux (μ”). The concentrated magnetic energy is converted to heat and dissipated by the magnetic loss of the ferrite, preventing emission as noise.

2. Suppress both normal-mode and common-mode noise

Normal-mode noise is when the signal current is generally low frequency, while the noise current is high frequency. To reduce such noise, noise suppression can be achieved by giving much greater resistance to the noise current than the signal current. When passing through a ferrite core, the noise current can be reduced because it has a high degree of resistance.

Common-mode noise is when currents have different directions and different phases. In some cases, the directions of the currents are reversed, and the noise affects both ways. In such cases, by passing the two cables through the ferrite core, the magnetic fluxes generated by the signal currents cancel each other out. The magnetic fluxes generated by the noise currents do not cancel each other out, therefore, they are reduced in response to the ferrite’s resistance (magnetic resistance).

3. It can be retrofitted

No changes to the circuit board are required.

APPLICATION

PCs, PDAs, game consoles, printers, hard disk drives, displays, digital still cameras, DVCs, DVD recorders, mobile phones, digital audio players, optical drives, flat panel TVs/displays, fax machines.

SCFS Type EMI Suppression Ferrite Core

SCFS Type EMI Suppression Ferrite Core

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RHS Type EMI Soft Magnetic Ferrite Core

RHS Type EMI Soft Magnetic Ferrite Core

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FS Type EMI Split Cable Clamp Ferrite Core

FS Type EMI Split Cable Clamp Ferrite Core

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RnH Type Cylinder Soft Ferrite Cores

RnH Type Cylinder Soft Ferrite Cores

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CF Type Flat Ferrite Core

CF Type Flat Ferrite Core

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DRnW Type EMI Ferrite Drum Core

DRnW Type EMI Ferrite Drum Core

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SCH Type EMI Split Cable Ferrite Core

SCH Type EMI Split Cable Ferrite Core

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SCT Type EMI Soft Split Ferrite Core for Cables

SCT Type EMI Soft Split Ferrite Core for Cables

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SCNF Type EMI Cable Ferrite Split Core

SCNF Type EMI Cable Ferrite Split Core

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SCRC Type Cable Ferrite Clamp Core

SCRC Type Cable Ferrite Clamp Core

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BB Type Magnetic Ferrite Bead Core

BB Type Magnetic Ferrite Bead Core

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SH Type EMI Suppression Soft Ferrite Core

SH Type EMI Suppression Soft Ferrite Core

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DnH Type NiZn Ferrite Core

DnH Type NiZn Ferrite Core

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RID Type NiZn Balun Ferrite Core

RID Type NiZn Balun Ferrite Core

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R Type EMI Rod Ferrite Core

R Type EMI Rod Ferrite Core

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Toroidal Type EMI Ferrite Core

Toroidal Type EMI Ferrite Core

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RH Type EMI Soft Ferrite Core

RH Type EMI Soft Ferrite Core

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