A Dependence of loss factor tan(δ) upon H in MnZn ferrites

[H Tomasz Grzybowski]

There is ηB constant given as a hysteresis material constant.
But there is the question: what is the limit of applicability
of the formula Δ(tan(δ)) = ηB⋅ΔB⋅μe?
In particular I think I want to use ferrite with μi = 2000 or so.
Up to what H value will tan(δ) increase linearly with B ?

 

[berkeman]

There is ηB constant given as a hysteresis material constant.
But there is the question: what is the limit of applicability
of the formula Δ(tan(δ)) = ηB⋅ΔB⋅μe?
In particular I think I want to use ferrite with μi = 2000 or so.
Up to what H value will tan(δ) increase linearly with B ?

Can you post links to the ferrite datasheets that you've been reading to try to answer this question? Thanks.

 

[H Tomasz Grzybowski]

Here is a link to ferrite data sheet: http://www.cosmoferrites.com/Downloads/Alnh/CF139.pdf