JPH0456107A - Inductance part and its manufacture - Google Patents

Abstract

PURPOSE:To obtain superior reduction of iron loss and magnetic shield effect in an inductance part by installing a coil in magnetic members consisting of insulating layers, dielectric layers or layers mixed with non-magnetic layers, and ferrite magnetic layers laminated in parallel with the magnetic flux generated by the coil. CONSTITUTION:Ferrite magnetic layer 1 and insulating layer 2 are laminated in parallel with the magnetic flux generated by a coil to form a magnetic member 5 of a shape like a Chinese character ' '. In this mixed layer a primary coil 3 and secondary coil 4 are installed to constitute an inductance part. Due to such a structure when the inductance part is operated at high frequency, the loss of the magnetic member itself and iron loss generated are very small and the magnetic shield effect is also very high because the magnetic layers are laminated in parallel with the magnetic flux generated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an inductance component suitable for operation at high frequencies, and more particularly to an inductance component such as a power transformer with very low power loss (iron loss) and a method for manufacturing the same. It is something.

Ferrite is a magnetic material often used in conventional technology inductance components. Ferrite is often used in inductance parts such as coils and transformers for various communications equipment and consumer equipment.In recent years, operating frequencies have been increasing, and inductance parts with sufficient performance to be used at high frequencies are required. ing.

Iron loss is an important characteristic required for inductance components, and inductance components with sufficiently low core loss in the operating frequency range are required.

Until now, various improvements have been made to reduce iron loss. For example, M n
Iron loss is reduced by adding various elements to the Zn-based ferrite material (see JP-A-61-42104 or JP-A-6142105). However, the loss level is still not sufficient for practical use.

On the other hand, a core made of laminated silicon steel plates is used as a low-frequency transformer, but the core loss is such that it cannot be used at the high frequencies required in recent years. However, it cannot be widely used due to cost issues, productivity, etc.

Furthermore, recently there has been a problem with noise or electromagnetic wave generation.
There are issues with noise countermeasures and magnetic shielding for various electronic components and devices.

Problems to be Solved by the Invention As mentioned above, various improvements have been proposed for reducing iron loss and shielding, but from a practical standpoint, they are still insufficient, and therefore, high frequency There were major issues regarding application to various electronic components etc. that operate in

The present invention aims to eliminate the above-mentioned conventional drawbacks and provide an inductance component with excellent iron loss and magnetic shielding effects.

Means for Solving the Problems In order to solve the problems more than just means for solving the problems, the present invention provides at least one layer of at least one of an insulating layer, a dielectric layer, and a non-magnetic layer, or a layer of a mixture thereof, and a ferrite layer. An inductance component is created by providing a coil on a magnetic material in which magnetic layers are laminated in parallel to the magnetic flux generated by the coil.

Function: By forming an inductance component with the above-mentioned structure, it is possible to combine at least one of an insulating layer, a dielectric layer, a non-magnetic layer, or a mixture of these layers and a ferrite magnetic layer into a coil or a ferrite magnetic layer. By creating an inductance component in which a coil is provided on a magnetic material laminated in parallel to the magnetic flux, each ferrite magnetic layer that makes up the magnetic material can be magnetically separated by the layer described above, making it possible to create an inductance component that is similar to the conventional inductance. It can provide cost reductions, magnetic shielding properties, and very low iron losses when operating at high frequencies, which could not be achieved with components.

Example Examples of the present invention will be described below.

The inductance component of the present invention has at least one of an insulating layer, a dielectric layer, a non-magnetic layer, or a mixture thereof, and a ferrite magnetic layer laminated in parallel to the magnetic flux generated by a coil. This is an inductance component constructed by providing a coil on a magnetic material. The insulator layer refers to a layer mainly made of an insulator, and the same applies to the dielectric layer and the nonmagnetic layer. Furthermore, a layer formed from a mixture of these may be used. FIG. 1 shows a schematic diagram of a transformer as an example of the inductance component of the present invention. FIG. 1 shows a transformer using an El type magnetic material. 1 is a ferrite magnetic layer, 2 is an insulating layer, and these form a sun-shaped magnetic body 5. 3 is the primary coil, 4 is the 2
Next is the coil. 2 and 3 are partially enlarged views showing an example of lamination of the magnetic material 5 shown in FIG. 1. FIG. Fig. 1 shows the case of 1 or 7 ferrite magnetic layers (E-type part), Fig. 2 shows 1 or 3 ferrite magnetic layers, and Fig. 3 shows 2 ferrite magnetic layers 1. . 6 is a nonmagnetic layer. As shown in FIG. 2, the ferrite magnetic layer 1 of the magnetic material 5 constituting the inductance component of the present invention has a laminated structure with an insulating layer 2 interposed therebetween. Due to this structure, the loss of the magnetic body itself and iron loss when operated at high frequencies are extremely small, and the magnetic shielding properties are also high because the layers are laminated in parallel to the magnetic flux generated by the coil. Even if the insulating layer 2 shown in Fig. 2 is replaced with a dielectric layer, a nonmagnetic layer, a layer of a mixture of these layers, or two or more layers, the core loss is very small and the magnetic High shielding properties.

The magnetic material 5 used in the inductance component of the present invention shown in FIG. 3 has a structure in which a layer having good matching with the ferrite magnetic layer 1 is brought into contact with the ferrite magnetic layer 1, and another layer is provided in between. In the case of FIG. 3, a non-magnetic layer 6 is used as a layer with good matching, and an insulating layer 2 is used as a layer therebetween. In this way, FIG. 3 shows a magnetic material 5 having a structure in which three types of layers are laminated.

FIG. 4 is a cross-sectional view of the magnetic body 5 in which the ferrite magnetic layer 1 is formed on the surface of the base body 7. In this case, the ferrite magnetic layer 1 may be formed on the entire surface or one side of the base 7. The ferrite magnetic layer 1 may be a ferrite plating film, a layer in which ferrite powder is fixed, or a ferrite sintered film. FIG. 5 shows an example of lamination of the magnetic material portion of the inductance component of the present invention, in which three U-shaped magnetic elements 8 each having a ferrite magnetic layer 1 formed on the surface of the base 7 shown in FIG. 4 are laminated. FIG. The inductance component shown in FIG. 5 in which the magnetic element body 8 having the ferrite magnetic layer 1 is laminated is structurally similar to that shown in FIG. 2 shown above.

In other words, by configuring the material of the base 7 from at least one of insulators, dielectrics, and non-magnetic materials, the second
The structure is similar to the one shown in the figure. FIG. 6 shows that five U-shaped magnetic bodies 8 are stacked in the same manner as in FIG. 5 to form one U-shaped magnetic body 5, and four of these are combined. 7 is a diagram showing an example of forming an EE type magnetic body 5 as shown in FIG. 6. FIG.

The ferrite magnetic layer 1 is made of MnZn-based ferrite, which is commonly used in inductance parts.

It may be composed of NiZn-based ferrite, other spinel-type ferrites, or a mixture thereof.

The material for forming the insulator W42 is alumina (AI
! ::03), Mullite (3A1203/2Si02)
.

beryllia (Bed), steatite (MgO・5i
n2), forsterite (2MgO-8i 02).

Various ceramics such as magnesia (MgO), titania (TiO,q), titania + zirconia (ZrO:), titania + magnesia, A 1203-5 i O:
・B20:+, A j! 20: l P b O
−3i 02・B = O:l.

Al2O3MgO-3i O2' B20:l, AI
Glass ceramics such as =O3CaO-MgO-8i02/B20:+, various organic materials, rubber, oil.

These include nitrides and carbides.

Materials for forming the dielectric layer include those included in the above-mentioned insulators, barium titanate, potassium niobate, and the like.

Materials for forming the non-magnetic layer 6 include zinc ferrite, which is compatible with spinel type ferrite, and α-F e:o.
There are 3 and so on. In this way, an insulator.

Many substances cannot be clearly classified into dielectric materials and non-magnetic materials and belong to two or more. As mentioned above, the above three layers do not necessarily have to be made of one material, but may be made of a mixture of various materials.

The material of the base body 7 is not particularly limited. (To name a few, polyimide films, various plastics such as polyethylene terephthalate (PET), various organic laminates, such as paper-based epoxy, glass cloth-based epoxy, glass-based polyester, glass cloth-based Teflon) There are Ilf Jl plate nuts such as Ilf Jl plates.Furthermore, there are various glasses, various ceramics, and metal oxides such as Cub and NiO.A ferrite magnetic layer 1 is present on the surface of the base 7 made of these materials. A plurality of magnetic bodies 8 each having the ferrite magnetic layer 1 formed thereon are laminated to constitute a magnetic body for one inductance component.

In this way, it has a structure in which one or more of insulating layers, dielectric layers, or non-magnetic layers and ferrite magnetic layers are alternately laminated in parallel to the magnetic flux generated by the coil, so magnetic shielding properties are achieved. High, iron loss or very small. In particular, it has a very small iron loss even at high frequencies, making it a magnetic material for inductance parts that exhibits its power in the high frequency range. Furthermore, the magnetic material constituting the inductance component of the present invention is made of a very inexpensive material and can be obtained by a highly productive method as described below.

Next, several examples of methods for manufacturing the inductance component of the present invention will be described.

Solvents such as ferrite powder and butyl calpitol, terpineol, alcohol, binders such as ethyl cellulose, polyvinyl butyral, polyhinyl alcohol, polyethylene oxide, ethylene-vinyl acetate, and sintering aids such as oxides or glasses. A plasticizer such as butylhenfurphthalate, dibutyl phthalate, glycerin, etc. may also be added. A kneaded mixture of these is molded into a sheet to produce a magnetic notebook.

Similarly, a kneaded mixture of insulating powder, a binder, and a solvent is formed into a notebook shape to produce an insulating sheet. A laminate is produced by alternately laminating the insulating sheets and magnetic sheets so as to be parallel to the magnetic flux generated by the coil. Alternatively, after laminating them in a planar shape, the laminated body is shaped so as to be parallel to the magnetic flux generated by the coil. Next, a magnetic material is formed by high-temperature treatment at a predetermined temperature. This is a method of providing a coil on this magnetic material.

Furthermore, as a lamination method, there is also a method in which sheets are wound concentrically and then a portion is cut.

The second method is to knead the magnetic sheet obtained in the above method with an insulating powder, a binder, and a solvent, apply this kneaded material to the magnetic sheet, and then apply the magnetic sheet to the magnetic flux generated by the coil. Stack them so that they are parallel. Next, a magnetic material is formed by high-temperature treatment at a predetermined temperature. This is a method of providing a coil on this magnetic material.

Although the above example shows a case where an insulator is used, a dielectric material, a nonmagnetic material, or a mixture thereof may be used instead of an insulator. Furthermore, instead of these single-layer structures, a multi-layer structure as shown in FIG. 3 may be used.

The third method is to use a kneaded material containing liquid ferrite powder and a base body parallel to the magnetic flux generated by the coil. This kneaded material is the same as before, and the minimum components are ferrite powder and a solvent. Furthermore, a sintering aid, a binder, a plasticizer, etc. may be mixed. Dip this kneaded material.

The ferrite magnetic layer is attached to the surface of the substrate by various methods such as printing or coating, and then dried with a solvent or subjected to high temperature treatment to form a ferrite magnetic layer on the surface of the substrate. This is a method in which the magnetic bodies obtained in this manner are laminated to form a magnetic body, and a coil is provided on this magnetic body.

Methods for laminating the base bodies include simply stacking the base bodies, placing and fixing the stacked base bodies in a case, and laminating them with an adhesive such as Yoki Material.

A fourth method is a method in which the ferrite magnetic layer of the third method is formed using a ferrite plating film. Ferrite plating is, for example, as disclosed in Japanese Unexamined Patent Publication No. 59111929, in which an aqueous solution containing at least ferrous ions as metal ions is brought into contact with a solid to cause a ferrite crystallization reaction, thereby forming ferrite on the solid surface. Refers to forming a film. Further, a specific method for forming a ferrite plating film is disclosed in, for example, Japanese Patent Application Laid-Open No. 1-246149. To give some examples, a solution containing ferrous ions and a solution containing an oxidizing agent for oxidizing ferrous ions are mixed before contacting the substrate, and then the solution is contacted with the substrate. Method of forming ferrite plating film, heating solution to 50℃
~ A method of forming a ferrite plating film by heating to below the boiling point and then contacting the substrate; a method of contacting the substrate with a solution containing ferrous ions and then contacting the substrate with a solution containing an oxidizing agent. There are methods to repeat this process to form a ferrite plating film, methods to form a ferrite plating film by irradiating the substrate with a laser, and even methods that combine several of these methods to form a ferrite plating film. good.

The method of laminating the substrate on which the ferrite plating film is formed by the above method is the same as the fifth method.

Methods for manufacturing the coil of the inductance component of the present invention include a method in which a bobbin with wire winding is attached to the magnetic body 5, or a method in which the entire surface of the magnetic body 5 is insulated and a coil is formed directly on the magnetic body 5. be.

Next, more specific embodiments of the present invention will be described.

(Example 1) Mn030mo1%, ZnO19mo1%, Fe, 0
Powder mixed with ゜51mo1% was heated to 800℃ in the air.
After holding it for 2 hours, it was pre-calcined by cooling in nitrogen. This powder was crushed and classified to produce MnZ with an average particle size of 3 μm.
N-type ferrite powder was prepared.

Next, 10 g of a mixture of butyl calpitol, ethyl cellulose, and butyl benzyl phthalate at a weight ratio of 201:2 was mixed with 30 g of the previously prepared MnZn-based ferrite powder to form a paste-like kneaded product. Created. This kneaded material is processed using the doctor blade method to a thickness of 1
A magnetic sheet with a thickness of 00 μm was produced. Similarly, terpineol.

10g of a mixture of ethylcellulose and butylbenzyl phthalate at a weight ratio of 201.1 and glass powder (powder composition: B20323wt%, S'i0
244 wt%, ZnO 16 wt%.

A paste-like kneaded product was prepared by mixing 30 g of Ba (08 wt %, average particle size: 1 μm). A glass sheet with a thickness of 10 μm was prepared from this kneaded product using a doctor blade method. These magnetic sheets and glass sheets were alternately laminated until ten magnetic sheets were stacked. This laminate was formed into a U-shape and then subjected to high temperature treatment at 1200° C. for 1 hour in a nitrogen atmosphere.

A primary coil and a secondary coil were wound around this high-temperature treated product, and an AC magnetic property measuring device was used to measure the maximum magnetic flux density of 50.
Iron loss was measured at 0G and a frequency of IMHz. Iron loss is about 20
It was 0 mW/Ci. The inductance component of the present invention was a magnetic material with extremely low iron loss even at high frequencies. Furthermore, we measured leakage magnetic flux around the magnetic material and found it to be extremely small.

In the case of glass, sheets were made in the same way using titanium oxide powder, barium titanate powder, zinc ferrite powder, and aluminum oxide powder instead of glass powder, treated at high temperature, and measured for iron loss. showed similar values.

(Example 2) 10g of a mixture of terpineol, polyvinyl butyral and butylhensyl phthalate in a weight ratio of 20:1:2 and Ni prepared in the same manner as in Example 1.
Zn-based ferrite powder (powder composition is Ni0N102O%
, Zn030mo1%, Fe2Fe2035O%, average particle size: 3 μm) were mixed to prepare a paste-like kneaded product. This kneaded material was processed using the doctor blade method to a thickness of 8.
A 0 μm magnetic sheet was produced. Similarly, 10g of a mixture of terpineol, polyvinyl butyral, and dibutyl phthalate at a weight ratio of 20.12.
and glass powder (powder composition is PbO60mo1%.

B2O31011101%, A12Al2032O%,
(average particle size: 1 μm) were mixed to prepare a paste-like kneaded product. A glass sheet with a thickness of 8 μm was prepared from this kneaded product using a doctor blade method. These magnetic sheets and glass sheets were alternately laminated until ten magnetic sheets were stacked. This laminate was formed into a U-shape and then subjected to high temperature treatment at 1200° C. for 1 hour in the atmosphere.

The core loss of the obtained high-temperature treated product was measured in the same manner as in Example 1, and the core loss was approximately 220 mW/cd. The inductance component of the present invention was a magnetic material with extremely low iron loss even at high frequencies. The leakage magnetic flux near the magnetic material was also very small.

(Example 3) 10 g of a mixture of pultyl calpitol and ethyl cellulose at a weight ratio of 201 and glass powder (powder composition is B:O, +23 it%, 5iO = 44W)
j%, ZnO 16 wt%, BaO 8 wt%, average particle size 1 μm) were mixed to prepare a paste-like kneaded product. The magnetic sheet produced in Example 1 was formed into a U-shape, a kneaded material was applied, and the U-shaped magnetic sheets were stacked up to 10 layers. This laminate was placed in nitrogen for 12 hours.
A high temperature treatment was performed at 00°C for 1 hour.

When the iron loss of the obtained high-temperature treated product was measured in the same manner as before, the iron loss was about 18 QmW/+a+f.

The inductance component of the present invention was a magnetic material with extremely low iron loss even at high frequencies. Furthermore, leakage magnetic flux near the magnetic material was also very small.

Instead of glass powder, pesto was made in the same way using titanium oxide powder, barium titanate powder, zinc ferrite powder, and aluminum oxide powder, treated at high temperature, and the iron loss was measured. Similar values were shown, and leakage magnetic flux near the magnetic material was also very small.

(Example 4) 10 g of a mixture of butyl calpitol and ethyl cellulose at a weight ratio of 201 and glass powder (powder composition: B: 0318 wt%).

SiO:! 49vt%, ZnO16wt%, BaO
8 wt %, average particle size: 1 μm) were mixed to prepare a paste-like kneaded product. The magnetic sheet produced in Example 2 was formed into a U-shape, a kneaded material was applied, and the U-shaped magnetic sheets were stacked to form 10 layers. This laminate was subjected to high temperature treatment by holding it at 1200° C. for 1 hour in the atmosphere.

When the iron loss of the obtained high-temperature treated product was measured in the same manner as before, the iron loss was about 19 QmW/a#. The inductance component of the present invention was a magnetic material with extremely low iron loss even at high frequencies. The leakage magnetic flux near the magnetic material was also very small.

Instead of glass powder, pastes were made in the same way using titanium oxide powder, barium titanate powder, zinc ferrite powder, and aluminum oxide powder, and the iron loss was measured after high temperature treatment. Similar values were shown, and leakage magnetic flux near the magnetic material was also very small.

(Example 5) Butyl calpitol and ethyl cellulose in a weight ratio of 20
・3g of MnZn-based ferrite powder prepared in the same manner as in Example 1 (powder composition is Mn
0.35mo1%, ZnO15a+o1%, Fe=
o, + 50 mo1%, average particle size 5 μm) was mixed and made into a paste. This paste was applied to a U-shaped alumina substrate and dried at 200°C.

An EE type magnetic material was produced by the method shown in FIG. That is, a ferrite layer was formed on five U-shaped alumina substrates (4 each, 20 in total) that could be combined. By stacking these five sheets, it becomes one U-shaped magnetic body as shown in Figure 6, and by combining four of these, it forms an EE-shaped magnetic body as shown in Figure 6. . The lamination method was to simply stack five sheets to form one U-shaped magnetic body, and then combine four sets to form the EE type magnetic body shown in FIG. When the iron loss was measured in the same manner as before, the iron loss was approximately 150 mW/a#. The inductance component of the present invention had extremely low iron loss even at high frequencies.

Furthermore, these alumina substrates were heated to 120% in nitrogen.
A high temperature treatment was performed at 0° C. for 1 hour.

In the same manner as above, using an AC magnetic property measuring device. When the iron loss was measured, the iron loss was about 5011 IW/d, and the leakage magnetic flux near the magnetic material was also very small.

Moreover, although iron loss was significantly reduced by high-temperature treatment, it showed very excellent properties even after drying alone.

Instead of alumina substrate, MgOMgO-8iO2,B
eO,Aj! 203-5 iO2・B20J Inductance parts of the present invention were produced in the same manner using five types of substrates: a glass ceramic substrate and a quartz glass plate, and the core loss was measured, showing the same value as in the case of the alumina substrate,
The leakage magnetic flux near the magnetic material was also very small.

(Example 6) Butyl calpitol and ethyl cellulose in a weight ratio of 20
3 g of NiZn-based ferrite powder prepared in the same manner as in Example 1 (powder composition is Ni0N103O%).

A paste-like material containing ferrite was prepared by mixing 10 g of ZnO2Qmo1%, Fe:0350mo1%, average particle size 5 μm). This paste was applied to the same alumina substrate as in Example 5 and dried at 200°C.

An inductance component was manufactured in the same manner as in Example 5, and the maximum magnetic flux density was determined to be 500G using an AC magnetic property measuring device.
When the iron loss was measured under the condition that the frequency was IM Hz, the iron loss +p was approximately 160 mW/ad...(・).The leakage magnetic flux near the magnetic material was also very small.

Furthermore, these alumina substrates were heated to 120% in air.
A high temperature treatment was performed at 0° C. for 1 hour.

When the iron loss was measured using an AC magnetic property measuring device in the same manner as above, the iron loss was about 50 mW/cm.

Moreover, although iron loss was significantly reduced by high-temperature treatment, it showed very excellent properties even after drying alone.

(Example 7) Ion exchange water (hereinafter simply referred to as water) 2I! An aqueous solution (reaction solution) was prepared by dissolving 5 g of ferrous chloride, 4 g of nickel chloride, and 100 μm of lead chloride. Another solution is an aqueous solution (oxidizing solution) in which 0.5 g of sodium nitrite and 10 g of ammonium acetate are dissolved in water 21.
was created.

Using these solutions, a ferrite plating film was produced on the same alumina substrate surface as in Example 5.

An inductance component was produced in the same manner as in Example 5,
The maximum magnetic flux density is 500G using an AC magnetic property measuring device.
When the iron loss was measured at a frequency of 1 MHz, the iron loss was about 20 mW/all. The inductance component of the present invention had extremely low iron loss even at high frequencies. The leakage magnetic flux near the magnetic material was also very small.

(Example 8) As a reaction solution, 4 g of ferrous chloride and 8 g of mankan oxide were added to 21 g of water.
An aqueous solution was prepared by dissolving 60 μg of zinc chloride and 60 μg of zinc chloride. Furthermore, as an oxidizing liquid, 0.5 g of sodium nitrite and 10 g of ammonium acetate were dissolved in 2 f of water.
Furthermore, an aqueous solution whose pH was adjusted to 9 with aqueous ammonia was prepared. Using these plating solutions, a ferrite plating film was formed on the same alumina substrate surface as in Example 5.

An inductance component was produced in the same manner as in Example 5. However, it was laminated using silicone resin. When the iron loss of this inductance component was measured using an AC magnetic property measuring device at a maximum magnetic flux density of 500 G and a frequency of 1 MHz, the iron loss was approximately 20 mW/d. The leakage magnetic flux near the magnetic material was also very small.

MgO-5iO, instead of the alumina substrate.

MgO, Bed, Af20: + 5iO=・B2O3
Glass-ceramic substrate 7 Inductance components of the present invention were similarly prepared using seven types of substrates: quartz glass plate, polyimide film, and glass cloth substrate Epoquin, and the iron loss was measured and found to be the same value as in the case of the alumina substrate. showed that.

Effects of the Invention As described above, the inductance component of the present invention includes a layer formed of at least one of an insulating layer, a dielectric layer, a non-magnetic layer, or a mixture thereof, and a ferrite magnetic layer. It has a structure in which a coil is attached to a magnetic material laminated in parallel to the magnetic flux generated by the coil, and it is an inductance component that has sufficiently small core loss even in high frequency ranges and has good magnetic shielding properties.

This makes it possible to realize an inductance component that is fully applicable to various electronic components that operate at high frequencies.

Furthermore, the present invention provides a method for obtaining an inductance component having such excellent characteristics.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the configuration of a typical inductance component according to an embodiment of the present invention, FIGS. 2, 3, 4, and 5.
This figure and FIG. 6 are a perspective view and a sectional view showing the laminated structure of the magnetic material portion of the inductance component of the present invention. 1... Ferrite magnetic layer, 2... Insulator layer, 3... Primary coil, 4... Secondary coil, 5... - Magnetic material, 6...Nonmagnetic layer, 7...Base, 8...Magnetic element on which a ferrite magnetic layer is formed. Name of agent: Patent attorney Shigetaka Awano (1 person\N~)＜
Toten＼〜勺＼〜勺4/）(＼力6N

Claims (5)

[Claims] (1) A coil is attached to a magnetic material in which a ferrite magnetic layer, an insulating layer, a dielectric layer, a non-magnetic layer, or a mixture of these layers are laminated in parallel to the magnetic flux generated by the coil. Inductance components provided and configured. (2) An insulator sheet made of a kneaded mixture of insulating powder, a binder, and a solvent, a dielectric sheet made of a kneaded mixture of dielectric powder, a binder, and a solvent, and a dielectric sheet made of a kneaded mixture of insulating powder, a binder, and a solvent. At least a non-magnetic sheet made of a kneaded mixture of magnetic powder, a binder and a solvent, or a mixture sheet made of a kneaded mixture of these powders, a binder and a solvent. A magnetic sheet made of a kneaded mixture of one or more types of sheets, ferrite powder, binder, and solvent is laminated in parallel to the magnetic flux generated by the coil, and then the coil is attached to the magnetic body formed by high temperature treatment. A manufacturing method for inductance components. (3) A kneaded mixture of ferrite powder, a binder, and a solvent is formed into a sheet shape, and a mixture of a powder containing one or more of insulating powder, dielectric powder, and non-magnetic powder, a binder, and a solvent is kneaded. A method of manufacturing inductance parts in which a coil is attached to the magnetic material formed by coating the material on a magnetic sheet, laminating the layers parallel to the magnetic flux generated by the coil, and then treating the material at high temperatures. (4) After applying a kneaded mixture of ferrite powder and solvent to a base parallel to the magnetic flux generated by the coil,
A method for manufacturing inductance parts in which a coil is installed on a magnetic material formed by stacking bases that have been treated at high temperatures to form a ferrite layer on the base surface. (5) A coil is attached to a magnetic body formed by laminating a base body whose shape is parallel to the magnetic flux generated by the coil and a solution containing at least ferrous ions is brought into contact with the base body to form a ferrite plating film on the base surface. A manufacturing method for inductance components.