In this tutorial we are going to learn about WHICH ARE MAGNETIC COMPONENTS FOR EMI & EMC REDUCTION.

  1. Inductors
    · Select inductors with a low self capacitance and series resistance.
    · Use ferrite beads to add inductance to component leads.
    · Use ferrite beads to damp out parasitic oscillations.
    · Position inductor close to high frequency noise source.
    · Use common mode chokes to reduce common mode interference.
    · Use devices that meet automotive environmental specifications.
  2. Capacitors
    · Select capacitors with a low inductance and resistance for filter networks.
    · Connect high frequency decoupling capacitors to the RF ground.
    · Position decoupling capacitors as close as possible to HF noise sources.
    · Use “high K” multi-layer disc ceramic type capacitors for decoupling, & keep lead lengths extremely short. Select capacitors with a wide frequency range.
    · Use current limiting resistors to prevent excessive Radio Frequency current from flowing in the decoupling capacitor.
    Select devices that meet automotive environmental specifications.
  3. Chokes
  4. Transformers
  5. SM Ferrite Beads

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