Laminated coil device and manufacturing method therefor
A technology of stacking coils and manufacturing methods, applied in coil manufacturing, transformer/inductor components, inductor/transformer/magnet manufacturing, etc., can solve the problem of high equipment cost, increased stray capacitance, increased dielectric constant, etc. problems, to achieve the effects of high reliability of structural defects, suppression of stray capacitance, and good high-frequency characteristics
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Embodiment 1
[0132] Magnetic material samples A to G in which the first glass component was contained in the metallic magnetic material were prepared, and various characteristics of these magnetic material samples A to G were evaluated.
[0133] [Magnetic Paste Production]
[0134] Fe—Si—Cr-based magnetic alloy powder containing Fe: 92.0 wt %, Si: 3.5 wt %, and Cr: 4.5 wt % with an average particle diameter of 6 μm was prepared as a metallic magnetic material.
[0135] In addition, SiO-containing glass was prepared as the first glass component 2 : 79wt%, B 2 o 3 : 19wt%, K 2 O: 2% by weight of glass powder having an average particle diameter of 1 μm and a softening point of 760° C.
[0136] Next, it weighed so that the compounding ratio of this magnetic alloy powder and glass powder may become Table 1, and mixed it, and obtained the magnetic material raw material.
[0137] Then, 26 parts by weight of terpineol dihydroacetate as an organic solvent, 3 parts by weight of ethyl cellulose ...
Embodiment 2
[0157] Various non-magnetic samples a to g in which the second glass component was contained in the ceramic material were prepared, and various properties of the non-magnetic samples a to g were evaluated.
[0158] [Production of non-magnetic paste]
[0159] As a ceramic material, Al with an average particle size of 1 μm was prepared 2 o 3 Made of ceramic powder.
[0160] In addition, as the second glass component, SiO containing 2 : 79wt%, B 2 o 3 : 19wt%, K 2 O: 2% by weight of glass powder having an average particle diameter of 1 μm and a softening point of 760° C.
[0161] Next, it weighed and mixed so that the compounding ratio of this ceramic powder and glass powder may become Table 2, and obtained the nonmagnetic material raw material.
[0162] Then, 26 parts by weight of terpineol dihydroacetate as an organic solvent, 3 parts by weight of ethyl cellulose resin as a binder resin, and 1 part by weight of a plasticizer were added to 100 parts by weight of the nonma...
Embodiment 3
[0176] Among the magnetic pastes prepared in Example 1, magnetic pastes from C to E with low water absorption and relative permittivity εr and good initial magnetic permeability μi were used, which were the same as those prepared in Example 2. Various laminated coil parts were produced by combining non-magnetic pastes, and the characteristics were evaluated.
[0177] [Manufacturing of laminated coil parts]
[0178] According to the method and order described in the [specific embodiment], a laminated molded body was produced (refer to Figure 3 ~ Figure 8 ).
[0179] That is, first, screen printing, coating and drying of the magnetic paste on the PET film were repeated to produce a first magnetic layer having a predetermined thickness.
[0180] Next, a non-magnetic paste was screen-printed and applied to a predetermined area on the surface of the first magnetic layer, and dried to form a hollow rectangular first non-magnetic layer having a predetermined width. Next, the magn...
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