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haracteristics of Metal Powder Core Material

The sendust core is typically composed of 85% Fe, 9.6% Si, and 5.4% Al. It is mainly used to replace the iron powder core. Its loss is 80% lower than that of the iron powder core. It can be used in the frequency range of 50Hz to 2MHz; the saturation magnetic flux density is about 1.05T; the magnetic permeability is from 26 to 125; the hysteresis coefficient is close to zero, and there is no noise when working at different frequencies. It has higher DC bias capability than MPP and has the best performance-price ratio. The sendust core is mainly used in AC inductors, output inductors, line filters, power factor correction inductors, etc. Large-scale sendust is used in high-current (power) inductors, solar energy conversion, UPS, hybrid electric vehicles, wind energy conversion and other high-current applications, and sometimes replaces air-gap ferrite for transformer cores.

DC Bias Properties of Sendust
Frequency Properties Curve of Sendust
Temperature Properties Curve of Sendust

Core Loss

Core Loss Properties of Sendust 60μ-125μ
Core Loss Properties of Sendust 20μ-40μ

The FeSi core is typically composed of 6.5% Si and 93.5% Fe. Its saturation magnetic flux density is about 1.6T; the magnetic permeability ranges from 26 to 90; the FeSi core is a veritable high-temperature material, and there is no thermal aging problem. Its core loss is lower than that of the iron powder core, and it has excellent DC bias performance. The FeSi core is mainly used in PFC circuits, new energy (solar, wind, hybrid) inverters, uninterruptible power supplies (UPS), etc.

DC Bias Properties Curve of FeSi
FeSi Frequency Properties Curve
Temperature Properties Curve of FeSi

Core Loss

Core Loss Propertes Curve of FeSi 60μ-90μ
Core Loss Properties Curve of FeSi 26μ

The DC bias characteristics and power loss characteristics of the second-generation FeSi cores are equivalent to those of amorphous magnetic powder cores, and they are mainly used in home appliances, distributed photovoltaic inverters, etc. Compared with high flux magnetic powder cores, the SF type is a more economical choice; compared with sendust, its DC bias performance has obvious advantages; compared with SK series, its performance of core loss is also greatly improved.

SF Series Core Loss Properties Curve
SF Series DC Bias Properties Curve
SF Series Frequency Properties Curve
SF Series Permeability Temperature Properties Curve

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