PURPOSE: To achieve connection from either direction of front and rear of a substrate component by placing one portion of a pattern sheet at the other surface side of the substrate component through the substrate component body.

CONSTITUTION: In a printed-circuit component 10, a pattern sheet 20 where a circuit pattern 21 consisting of a conductor such as copper or a conductive paste is formed at a flexible sheet 22 at a side of an inner surface 12 of a substrate component body 11 with a section in U-shape consisting of a general- purpose resin is joined in one piece. An edge portion 24 of the pattern sheet 20 is provided at a side of an outer surface 17 of the substrate component 11 through the substrate component body 11. The edge portion 24 through the substrate component body 11 is formed by a free edge which is not joined to the substrate component body 11 and is directly connected to an external circuit and a device with a connector 15. Also, by forming a plurality of routing wires at the pattern sheet, a circuit pattern can also be provided on the front and rear of the substrate body alternately.