Nanocrystalline vs Ferrite for EMI Filters: A Technical Comparison

Understanding the performance differences between nanocrystalline and ferrite cores for electromagnetic interference suppression applications.

Material Properties Comparison

PropertyNanocrystallineFerrite
Initial Permeability15,000 - 100,0002,000 - 15,000
Frequency RangeDC - 1 MHz1 kHz - 100 MHz

Application Guidelines

Choose Nanocrystalline When:

  • • Operating frequency below 100 kHz
  • • High DC bias current present
  • • Compact design required

Choose Ferrite When:

  • • Primary interference above 1 MHz
  • • Cost optimization critical
  • • High-volume production

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