DOUBLE-SIDED CIRCUIT BOARD AND MULTILAYER WIRING BOARD USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a double-sided circuit board that can secure high connection reliability and is lighter than a double-sided circuit board where a metal core is arranged as a core. SOLUTION: An insulating layer 2 is laminated on both surfaces of a core layer 1 that is made of carbonaceous fibers and an organic macromolecular resin for its binder, and a wiring conductor 3a is provided on both surfaces of the insulating layer 2.