Laminated coil component
AssigneeMurata Manufacturing Co., Ltd.
InventorTakashi Sakai
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Abstract
A laminated coil component in which the reliability can be improved by suppressing a decrease in the bonding strength between an extended conductor layer and an external electrode. The laminated coil component includes an element body; a coil placed inside the element body and including a plurality of coil conductor layers that are electrically connected; and an external electrode formed on an outer surface of the element body and electrically connected to the coil via an extended conductor layer electrically connected to the coil. The extended conductor layer has an average crystal grain size less than an average crystal grain size of each of the coil conductor layers.
Claims12
A laminated coil component comprising:
- an element body;
- a coil provided inside the element body and including a plurality of coil conductor layers that are electrically connected;
- and
- an external electrode disposed on an outer surface of the element body and electrically connected to the coil via an extended conductor layer electrically connected to the coil, and
- wherein an average crystal grain size of the extended conductor layer is less than an average crystal grain size of each of the coil conductor layers,
- the extended conductor layer is I-shaped and extends only in a single direction, and
- the average crystal grain size of the extended conductor layer is less than the average crystal grain size of each of the coil conductor layers by 2 μm or greater.
Dependencies are inferred from the claim text.