The step 1 which calcines the multiple ferrite green sheets which were created with the production manner of the thin-shaped

摘要

PROBLEM TO BE SOLVED: To provide a thin coil component having a laminated structure that maintains high reliability of a component and is excellent in productivity.;SOLUTION: The coil component 10 has such a structure that both sides of a coil layer 16 where coil patterns 20 and 22 are formed on an insulation substrate 18 is pinched by lamination ferrite substrates 12 and 30 with an adhesive layer 14 in between, and it is obtained by dividing a press-molded aggregate substrate 11 into single coils and forming an external electrode 32 at its end surface. The lamination ferrite substrates 12 and 30 are made by laminating a plurality of ferrite green sheets manufactured by green sheet method, press-fitting and sintering them. They excels in strength and planarity, and the reliability of the coil component is hardly failed. Furthermore, the lamination ferrite substrates can be laminated and press-fitted onto the coil layer 16 with the adhesive layer 14 at the same time, so that they are superior in productivity.;COPYRIGHT: (C)2004,JPO