Electronic component with an external electrode including a conductive material-containing resin layer
An electronic component body includes an internal electrode that is partially extended to a surface of the electronic component body and is connected to an external electrode including a conductive material-containing resin layer including a conductive material and a resin layer and a plated layer covering the conductive material-containing resin layer. The conductive material-containing resin layer includes metal particles as the conductive material, and the plated layer extends from the surface of the conductive material-containing resin layer into the conductive material-containing resin layer such that the plated layer coats at least some of the metal particles.
1. An electronic component comprising:
an electronic component body; and
an external electrode provided on a surface of the electronic component body; wherein
the electronic component body includes an internal electrode that is partially extended to the surface of the electronic component body and is provided to be connected to the external electrode;
the external electrode includes a conductive material-containing resin layer including a conductive material and a resin material, and a plated layer covering the conductive material-containing resin layer;
the conductive material-containing resin layer includes metal particles as the conductive material;
the metal particles include a mixture of flattened powder in a flattened shape and a spherical metal powder;
a proportion of a volume of the metal particles to a volume of the conductive material-containing resin layer is about 40 volume % or more and about 63 volume % or less;
the plated layer extends from a surface of the conductive material-containing resin layer into an inside of the conductive material-containing resin layer, and coats at least some of the metal particles; and
the plated layer extends into the inside of the conductive material-containing resin layer to a depth of about 60% or greater of a thickness of the conductive material-containing resin layer.
2. The electronic component according to claim 1 , wherein the metal particles of the conductive material-containing resin layer includes at least one of Cu particles, Ag particles, and Cu particles coated with Ag.
3. The electronic component according to claim 1 , wherein
the plated layer includes a Ni plated layer on the conductive material-containing resin layer, and a Sn plated layer on the Ni plated layer; and
the Ni plated layer of the plated layer extends while coating at least some of the metal particles in the conductive material-containing resin layer.
4. The electronic component according to claim 1 , wherein
the plated layer extends through the conductive material-containing resin layer until reaching the electronic component body; and
the plated layer is connected to the internal electrode extended to the surface of the electronic component body.
5. The electronic component according to claim 1 , wherein
the external electrode includes a base electrode layer of a baked electrode including a glass component and a metal component;
the base electrode layer is located on the electronic component body;
the conductive material-containing resin layer is located on the base electrode layer; and
the plated layer covering the conductive material-containing resin layer extends to be connected to the base electrode layer.
6. The electronic component according to claim 5 , wherein the base electrode layer includes one of Cu and Ni as the metal component.
7. The electronic component according to claim 5 , wherein a thickest portion of the base electrode layer is about 5 μm or more and about 70 μm or less.
8. The electronic component according to claim 5 , wherein the base electrode layer has one of a single-layer structure and a multilayer structure.
9. The electronic component according to claim 1 , wherein the electronic component is a multilayer ceramic capacitor.
10. The electronic component according to claim 9 , wherein an outer layer of the multilayer ceramic capacitor has a thickness of about 10 μm or more and about 30 μm.
11. The electronic component according to claim 9 , wherein the multilayer ceramic capacitor includes a plurality of dielectric layers each with a thickness of about 0.4 μm or more and about 2.0 μm or less.
12. The electronic component according to claim 1 , wherein the electronic component body has a dimension of about 0.2 mm or more and about 3.2 mm or less in a length direction, a dimension of about 0.1 mm or more and about 2.5 mm or less in a thickness direction, a dimension of about 0.1 mm or more and about 2.5 mm or less in a width direction.
13. The electronic component according to claim 1 , wherein the internal electrode has a thickness of about 0.5 μm or more and about 1 μm or less.
14. The electronic component according to claim 1 , wherein the electronic component is a multilayer ceramic capacitor including a plurality of internal electrodes and a plurality of ceramic layers, and a portion of the internal electrodes covering the ceramic layers is about 70% or more and about 95% or less.
15. The electronic component according to claim 1 , wherein the resin material is a thermosetting resin material.
16. The electronic component according to claim 1 , wherein the metal particles are about 1.0 μm or more and about 10 μm or less in size.
17. The electronic component according to claim 1 , wherein a content ratio of the metal particles included in the conductive material-containing resin layer is about 83 weight % or more and about 93 weight % or less.
18. The electronic component according to claim 1 , wherein the conductive material-containing resin layer is about 5 μm or more and about 100 μm or less in thickness.
19. The electronic component according to claim 1 , wherein the conductive material-containing resin layer has one of a single-layer structure and a multilayer structure.