Patent ID: 8813346

Claim:
A method for manufacturing a coil-type electronic component having a coil provided in or around its base material, comprising: providing soft magnetic alloy grains having no oxide layer on their surfaces formed by oxidation greater than natural oxidation of the grains, said soft magnetic alloy grains containing iron, silicon and another element that oxidizes more easily than iron; pressing a mixture of binder and soft magnetic alloy grains to obtain a molded product; heat-treating the molded product in an oxidizing atmosphere containing oxygen to oxidize surfaces of the soft magnetic alloy grains so as to form an oxide layer on the surfaces of the soft magnetic alloy grains and bond the soft magnetic alloy grains with one another via the oxide layer, thereby obtaining a base material, wherein the oxide layer contains the other element that oxidizes more easily than iron in a quantity larger than that in the soft magnetic alloy grains; and providing a coil in or around the base material and electrodes extending from the base material, wherein the oxide layer is a film covering the surface of the grains and has a partially discontinued portion on the surface.