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EMI Suppression

Electro-magnetic interference (EMI) severely affects the operation of electronic equipment, either if the noise is generated by the device itself or it is received from the environment. Ferrites exhibit excellent EMI protection against common mode and differential conducted noise , since their insertion loss is proportional to frequency thus showing no attenuation to signals, but high impedance to high frequency noise.

Ferroxcube offers a wide range of materials for different frequency bands, thermal conditions and type of noise to be suppressed, with complete data and characterization to ease the design process. Materials can be found in most appropriate shapes for its use: toroids for common mode chokes, cable shields, beads, rods and several ready to mount solutions like SMD beads, through hole wideband chokes and encapsulated cable shields.

  • High Perm
  • Low Perm
Material µi  at 25 ° C Bsat (mT) at
25 ° C (1200 A/m)
Tc(° C) p (Ωm) Ferrite type Remarks Datasheet
3C11 4300 ≈ 390 ≥ 125 ≈ 1 MnZn Frequency < 30 MHz download PDF
3E65 5200 ≈ 480 ≥ 165 ≈ 0.5 MnZn Frequency < 20 MHz download PDF
3E25 6000 ≈ 390 ≥ 125 ≈ 0.5 MnZn Frequency < 20 MHz download PDF
3E27 6000 ≈ 460 ≥ 150 ≈ 0.5 MnZn Frequency < 20 MHz download PDF
3E26 7000 ≈ 430 ≥ 155 ≈ 0.5 MnZn Frequency < 20 MHz download PDF
3E10 10000 ≈ 460 ≥ 130 ≈ 0.5 MnZn Frequency < 20 MHz download PDF
3E6 10000 ≈ 460 ≥ 130 ≈ 0.1 MnZn Frequency < 15 MHz download PDF
3E12 12000 ≈ 470 ≥ 130 ≈ 0.5 MnZn Frequency < 15 MHz download PDF
3E15 15000 ≈ 470 ≥ 130 ≈ 0.5 MnZn Frequency < 15 MHz download PDF
Available core shapes: Toroids, E, EI, U
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