Coil component
A coil component includes an element body, a coil provided in the element body, and an outer electrode provided in the element body and electrically connected to the coil. The outer electrode is embedded in one surface of the element body such that a protruding portion, which is a portion of the outer electrode, protrudes from the one surface of the element body. Also, a thickness of an embedded portion, which is a portion of the outer electrode and is embedded in the one surface of the element body, is larger than a thickness of the protruding portion of the outer electrode protruding from the one surface of the element body in thickness in a direction perpendicular to the one surface of the element body.
1. A coil component comprising:
an element body, the element body includes a bottom surface and two end surfaces;
a coil provided in the element body;
an outer electrode provided on the element body and electrically connected to the coil, the outer electrode is provided at least on the bottom surface of the element body, the outer electrode being formed as a single piece and partially embedded in the element body to form a protruding portion and an embedded portion, and
a plated layer formed on the outer electrode, wherein
the embedded portion of the outer electrode is embedded in one surface of the element body such that the protruding portion of the outer electrode protrudes from the one surface of the element body, and the protruding portion is in a single piece with the embedded portion, and
a thickness of the embedded portion of the outer electrode is larger than a thickness of the protruding portion of the outer electrode protruding from the one surface of the element body in thickness in a direction perpendicular to the bottom surface of the element body.
2. The coil component according claim 1 , wherein
a ratio of the thickness of the embedded portion of the outer electrode to a sum of the thickness of the embedded portion of the outer electrode and the thickness of the protruding portion of the outer electrode is from about 60% to about 90%.
3. The coil component according to claim 1 , wherein
the two end surfaces face each other, and the bottom surface is provided between the two end surfaces, and
the outer electrode is provided across one of the two end surfaces and the bottom surface, and across an other of the two end surfaces and the bottom surface.
4. The coil component according to claim 3 , wherein
the outer electrode has a first portion provided on the bottom surface and a second portion provided on each of the end surfaces,
a chamfered portion is provided at a corner portion connecting the first portion and the second portion, and
a radius of curvature of the chamfered portion of the outer electrode is larger than a radius of curvature of a chamfered portion provided at a corner portion of the element body.
5. The coil component according to claim 1 , wherein
the coil is spirally wound along a width direction of the element body, and a height dimension of the element body is larger than a width dimension of the element body.
6. The coil component according to claim 2 , wherein
the element body includes a bottom surface, and the outer electrode is provided on the bottom surface.
7. The coil component according to claim 2 , wherein
the two end surfaces face each other, and the bottom surface is provided between the two end surfaces, and
the outer electrode is provided across one of the two end surfaces and the bottom surface, and across an other of the two end surfaces and the bottom surface.
8. The coil component according to claim 7 , wherein
the outer electrode has a first portion provided on the bottom surface and a second portion provided on each of the end surfaces,
a chamfered portion is provided at a corner portion connecting the first portion and the second portion, and
a radius of curvature of the chamfered portion of the outer electrode is larger than a radius of curvature of a chamfered portion provided at a corner portion of the element body.
9. The coil component according to claim 2 , wherein
the coil is spirally wound along a width direction of the element body, and a height dimension of the element body is larger than a width dimension of the element body.
10. The coil component according to claim 3 , wherein
the coil is spirally wound along a width direction of the element body, and a height dimension of the element body is larger than a width dimension of the element body.
11. The coil component according to claim 4 , wherein
the coil is spirally wound along a width direction of the element body, and a height dimension of the element body is larger than a width dimension of the element body.
12. The coil component according to claim 6 , wherein
the coil is spirally wound along a width direction of the element body, and a height dimension of the element body is larger than a width dimension of the element body.
13. The coil component according to claim 7 , wherein
the coil is spirally wound along a width direction of the element body, and a height dimension of the element body is larger than a width dimension of the element body.
14. The coil component according to claim 8 , wherein
the coil is spirally wound along a width direction of the element body, and a height dimension of the element body is larger than a width dimension of the element body.
15. A method for manufacturing the coil component according to claim 1 , the method comprising:
preparing an insulating paste to be the element body and a conductive paste to be the outer electrode having a shrinkage amount smaller than a shrinkage amount of the insulating paste at a time of baking,
laminating the insulating paste and the conductive paste to form a multilayer body, and
baking the multilayer body.
16. A method for manufacturing the coil component according to claim 2 , the method comprising:
preparing an insulating paste to be the element body and a conductive paste to be the outer electrode having a shrinkage amount smaller than a shrinkage amount of the insulating paste at a time of baking,
laminating the insulating paste and the conductive paste to form a multilayer body, and
baking the multilayer body.
17. A method for manufacturing the coil component according to claim 4 , the method comprising:
preparing an insulating paste to be the element body and a conductive paste to be the outer electrode having a shrinkage amount smaller than a shrinkage amount of the insulating paste at a time of baking,
laminating the insulating paste and the conductive paste to form a multilayer body, and
baking the multilayer body.
18. A method for manufacturing the coil component according to claim 3 , the method comprising:
preparing an insulating paste to be the element body and a conductive paste to be the outer electrode having a shrinkage amount smaller than a shrinkage amount of the insulating paste at a time of baking,
laminating the insulating paste and the conductive paste to form a multilayer body, and
baking the multilayer body.