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HF Hi-Flux

Hi-Flux cores are designed to operate up to about 6500 gauss, as opposed to the 3500 gauss limit of standard MPP cores. There is some sacrifice in stability because less distributed air gap is required to obtain the reduced permeabilities. Core losses are also higher than MPP, although because of their high flux and power-handling capabilities, HI-Flux cores are used as energy storage inductors and in line output (flyback) transformers in SMPS. They are also especially well suited for DC and line frequency noise filter inductors (such as the differential-mode choke in a switched mode power supply). Their high saturation flux density can be used to advantage because core loss is negligible at the low frequencies of these applications.

Disadvantages of Hi-Flux are:

Higher core losses than MPP
Manufacturing costs are relatively high, making Hi-Flux cores second only to MPP cores in cost terms
The available shape is limited to toroidal only, due to very high pressing pressures required.

Advantages of Hi-Flux are:

Temperature stable
High energy storage per unit volume
Available graded into small increments of permeability range
Higher Bmax  than MPP cores
Permeabilities available up to 160 compared to 100 for Iron Powder

Applications include:

Energy storage inductors used in switch-mode power supplies
DC and line frequency noise filter inductors
Power factor correction (PFC) circuits
Unidirectional drive applications such as line output (flyback) transformers and pulse transformers.

For further information please refer to powder core technical downloads list








Cosmo Ferrites

Check out our range of Cosmo Ferrites They provide a high quality, low cost alternative to Ferroxcube™, Epcos™, TDK™ etc..  Many cores are held ex-stock and factory lead-times are much lower than the industry average. 

For further information, follow the links below :- 

Cosmo Ferrites Brochure

Material Cross Reference Chart