What is hysteresis material constant ηB?
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A. It is a constant that represents hysteresis loss when a magnetic material is operating in the Rayleigh region, as shown in the following formula.


  • tanδh : Hysteresis loss coefficient
  • μ : Relative permeability in the Rayleigh region
  • Bm : Maximum magnetic flux density (T)

* Terminology related to ferrites can be found in the website in ”Terms Definitions and Explanations” under ”Ferrite Summary”.
* The symbol and the catalog of this data are in accordance with IEC Publication 60401-3.
* Our terminology and settings were established by reference to JIS C 2560-1,-2.