Patent ID: 6392297
Filing Date: 2002-05-21
Classification: H01L,H03H

Abstract:
An electronic component as a circuit element of a conductor/insulator stacked type, which comprises:an insulator substrate made of a machineable material having a Vickers hardness within the range between 600 and 1,000; a layered member composed of a plurality of insulator resin layers and a plurality of conductor pattern layers alternately stacked on said insulator substrate to form a first conductor line and a second conductor line, each of said first conductor line and said second conductor lines comprising at least one conductor layer, each of said insulator resin layers being made of benzocyclobutene, said layered member stacked on said substrate having side surfaces on which first, second, and third areas are defined, respectively; first and second external electrode terminal portions connected to opposite ends of said first conductor line and covering said first and second areas of side surfaces of said layered member and said insulator substrate, respectively; a third external electrode terminal portion connected to one end of said second conductor line and covering said third area of the side surfaces of said layered member and said insulator substrate; said first and said second conductor lines having magnetic and electrocapacitive coupling with each other; and first through third electrode extracting structures including said first through third external electrode terminal portions, each of said first through third external electrode terminal portions comprising: a conductor resin layer formed on the corresponding side surface area of said layered member and said insulator substrate, an anti-diffusion film plated on said conductor resin layer; and an external connection film of a solder film or a tin film formed on said anti-diffusion film; each of said first through third electrode extracting structures comprising:the uppermost one of said insulator resin layers of said electronic component provided with an electrode extracting aperture portion formed as a notch or a through hole penetrating said uppermost insulator resin layer to reach an underlying one of said conductor pattern layers adjacent each of said first, second, and third external, electrode terminal portions; an electrode extracting pattern filled in said electrode extracting aperture portion and extending on the portion of said uppermost insulator resin layer surrounding the edge of said electrode extracting aperture portion, said electrode extracting pattern being connected to said conductor resin layer, said external connection film extending on and overlying said electrode extracting pattern; and a protection resin layer formed on the uppermost one of said insulator resin layers and having an edge portion in contact with said external connection film.