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US 5,963,119 AGranted
Electric component having conductor film formed on insulative base
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsKazuhiro Takeda, Hiromi Sakita, Kenzou Isozaki, Noriya Sato
Life of this patent
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Abstract
An inductance device wherein a conductor film is formed on a base, grooves are formed in the conductor film, a protective material is disposed on the grooves, and a length L1, a width L2 and a height L3 of the inductance device satisfy the following relation: L1=0.5 to 1.5 mm; L2=0.2 to 0.7 mm; and L3=0.2 to 0.7 mm.
Claims14
An electric component comprising:
- a base having a portion in which a recess is formed, said recess having a depth of 5 to 50 .mu.m;
- a conductor film formed on said portion of said base, at least one groove being formed in said conductor film;
- and
- a protective material formed on said conductor film within said recess of said base;
- wherein said electric component has a length of 0.5 to 1.5 mm, and a width and a height of 0.2 to 0.7 mm.
2 more elements
An electric component comprising:
- a base;
- and
- a conductor film formed on a portion of said base, at least one groove being formed in said conductor film, wherein:
- said electric component has a length of 0.5 to 1.5 mm, and a width and a height of 0.2 to 0.7 mm;
- and
- said conductor film has a surface coarseness of 1 .mu.m or less.
3 more elements
An electric component comprising:
- a base;
- and
- a conductor film formed on a portion of said base, at least one groove being formed in said conductor film, wherein:
- said electric component has a length of 0.5 to 1.5 mm, and a width and a height of 0.2 to 0.7 mm;
- and
- said base has a volume resistivity of at least 10.sup.13, a heat expansion coefficient of not larger than 5.times.10.sup.-4 at 20 to 500.degree. C., a dielectric constant of not larger than 12 at 1 MHZ, a bending strength of at least 1,300 kg/cm.sup.2 and a density of 2 to 5 g/cm.sup.3.
3 more elements
An electric component comprising:
- a base;
- and
- a conductor film formed on a portion of said base, at least one groove being formed in said conductor film, wherein:
- said electric component has a length of 0.5 to 1.5 mm, and a width and a height of 0.2 to 0.7 mm;
- and
- said base has a surface coarseness of 0.15 to 0.5 .mu.m.
3 more elements
An electric component comprising:
- a base;
- and
- a conductor film formed on a portion of said base, at least one groove being formed in said conductor film, wherein:
- said electric component has a length of 0.5 to 1.5 mm, and a width and a height of 0.2 to 0.7 mm;
- and
- end portions of said base respectively have heights Z1 and Z2 satisfying the following relation:
- .vertline.Z1-Z2.vertline..ltoreq.80 .mu.m.
4 more elements
An electric component comprising:
- a base;
- and
- a conductor film formed on a portion of said base, at least one groove being formed in said conductor film, wherein:
- said electric component has a length of 0.5 to 1.5 mm, and a width and a height of 0.2 to 0.7 mm;
- both end portions of said base have chamfered corners with a radius of curvature larger than 0.03 mm and smaller than 0.15 mm;
- and
- a center portion of said base, where said at least one groove is formed in said conductor film, has chamfered corners with a radius of curvature larger than 0.01 mm.
4 more elements
Dependencies are inferred from the claim text.