Coil-component manufacturing method and coil component

A coil component comprising:

• a multilayer body including a base body, and at least one coil disposed in the base body, the base body including a stack of a plurality of magnetic layers, the at least one coil including a stack of a plurality of coil conductor layers;
• and
• an outer electrode that is disposed on an outer surface of the base body, and that is electrically connected with the at least one coil,
• wherein
• the plurality of magnetic layers each include metal magnetic particles,
• the base body is impregnated with resin,
• the base body has
• a first major face and a second major face that are opposite to each other in a height direction,
• a first end face and a second end face that are opposite to each other in a length direction orthogonal to the height direction, and
• a first lateral face and a second lateral face that are opposite to each other in a width direction, the width direction being orthogonal to the height direction and to the length direction, and
• at least one of the first end face, the second end face, the first lateral face, and the second lateral face has a surface roughness Sa greater than a surface roughness Sa of at least one of the first major face and the second major face.

A coil component comprising:

• a multilayer body including a base body, and at least one coil disposed in the base body, the base body including a stack of a plurality of magnetic layers, the at least one coil including a stack of a plurality of coil conductor layers;
• and
• an outer electrode that is disposed on an outer surface of the base body, and that is electrically connected with the at least one coil,
• wherein
• the plurality of magnetic layers each include metal magnetic particles,
• the base body is impregnated with resin,
• the base body has
• a first major face and a second major face that are opposite to each other in a height direction,
• a first end face and a second end face that are opposite to each other in a length direction orthogonal to the height direction, and
• a first lateral face and a second lateral face that are opposite to each other in a width direction, the width direction being orthogonal to the height direction and to the length direction, and
• area fractions of the resin exposed on a surface of at least one of the first end face, the second end face, the first lateral face, and the second lateral face have a mean value of greater than or equal to 30%, and a standard deviation of less than or equal to 6%.