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METALLIC MAGNETIC MATERIAL FOR MAGNETIC ELEMENT OF A CHOKE COIL AND SMD CHOKE COIL
METALLIC MAGNETIC MATERIAL FOR MAGNETIC ELEMENT OF A CHOKE COIL AND SMD CHOKE COIL
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机译:扼流圈和SMD扼流圈的磁性元件用金属磁性材料
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摘要
A metallic magnetic material for magnetic element for magnetic element of a choke coil and an SMD choke power coil for accommodating low voltage and high current in a personal computer, graphic card, high frequency power supply, etc, is prepared by baking a powder of Fe—Si—Al alloy sendust, obtained by an atomization process and having an average particle diameter of 10 to 70 μm, at 600° C. to 1000° C. in air or in an oxidizing atmosphere and mixing the baked sendust with 3 to 45 wt % of a carbonyl iron powder with an average particle diameter of 1 to 10 μm. The metallic magnetic material for magnetic element according to the present invention is used in a coil-embedded SMD power choke coil having a square or rectangular shape with a height of 1 mm to 7 mm and with a length of one side being 3 mm to 13 mm.
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