Ferrite composition and electronic parts

A technology of electronic components and ferrites, applied in transformer/inductor components, electrical components, circuits, etc., can solve the problems of large temperature change rate of inductance, inability to meet temperature characteristics, etc., achieve good temperature characteristics, and achieve miniaturization Effect

Active Publication Date: 2019-03-19
TDK CORPARATION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the temperature change rate of the inductance of the ferrite material disclosed in Patent Document 3 is too large, and in many cases it cannot meet the temperature characteristics demanded in recent years.
[0008] In the technologies of the above-mentioned Patent Documents 1 to 3, although a certain effect can be obtained for the characteristics targeted by each technology, other characteristics are often sacrificed.
In addition, when only one characteristic is excellent, its use is limited

Method used

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  • Ferrite composition and electronic parts
  • Ferrite composition and electronic parts
  • Ferrite composition and electronic parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0072] Hereinafter, the present invention will be described based on more detailed examples, but the present invention is not limited to these examples.

[0073] First, as a raw material of the main component, Fe 2 o 3 , NiO, CuO, ZnO, SiO 2 . Prepare Bi as a raw material for subcomponents 2 o 3 、Co 3 o 4 . In addition, the average particle diameter of the starting material is preferably 0.05 to 1.00 μm.

[0074] Next, the prepared main component raw material powder and auxiliary component raw material powder were weighed so that the sintered body had the composition described in Table 1.

[0075] After weighing, the Fe in the prepared main component raw material 2 o 3 , NiO, CuO, and if necessary, a part of ZnO was wet-mixed with a ball mill for 16 hours to obtain a raw material mixture.

[0076] Next, after drying the obtained raw material mixture, it calcined in air to obtain a calcined product. The calcining temperature is appropriately selected in the range of...

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Abstract

The present invention relates to a ferrite composition and an electronic part, the main component is composed of the following compounds: Fe 2 o 3 A compound of 23.0 to 47.0 mol% of Fe in terms of CuO, a compound of Cu of 3.0 to 16.0 mol% in terms of CuO, a compound of 4.0 to 39.0 mol% of Zn in terms of ZnO, and a compound of SiO in terms of 2 In conversion, 1.5 to 13.0 mol% of the Si compound and the remainder of the Ni compound. With respect to 100 parts by weight of the above-mentioned main components, containing Co 3 o 4 A compound of Co in terms of 0.1 to 8.0 parts by weight, and Bi 2 o 3 The compound of Bi is converted into 0.25-5.00 weight part as a subcomponent.

Description

technical field [0001] The present invention relates to a ferrite composition suitable for production of multilayer inductors and the like, and an electronic component comprising the composition. Background technique [0002] The advancement of high performance of portable devices such as smartphones has been remarkable. Recently, adoption of NFC (Nearfield communication) and non-contact power feeding is progressing, and circuits through which higher alternating current flows than conventional ones are increasing. [0003] In addition, in response to densification of electronic components, there is still a strong demand for miniaturization of components. In general, the Q value of an inductance element decreases when the alternating current increases or the size is reduced. Due to such a situation, a magnetic core material capable of obtaining a high Q value even when an alternating current value is increased or miniaturized, and an inductance element using the same are re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/30C04B35/26H01F27/255H01F1/11
CPCC04B35/2658C04B35/2666C04B2235/3277C04B2235/3279C04B2235/3281C04B2235/3284C04B2235/3298C04B2235/3418H01F1/11H01F27/255C04B35/26C04B35/64C04B2235/3275C04B2235/405H01F1/34
Inventor 角田晃一和田龙一秋田由香里高桥幸雄铃木孝志村井明日香田之上宽之
Owner TDK CORPARATION
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