HIGH-BREAKDOWN STRENGTH AND HIGH-CURRENT WIRING BOARD

摘要

PURPOSE: To make it possible to absorb the projected amounts error of columnar conductors from a wiring board or an error on the positions of the columnar conductors in the direction of the board surface of the wiring board by a method wherein the depth of a housing space formed in each insulating plate is made deeper than the depth of each high-current use tabular conductor which is housed in this housing space. CONSTITUTION: This high-breakdown strength and high-current wiring board is provided with tabular conductors 1 consisting of a copper plate of a thickness of 3.0mm. Each tabular conductor 1 is one obtainable by forming the copper plate into a necessary circuit pattern by a press punching processing, a water jet cutting processing or the like. A columnar conductor 2 for making continuity in the thickness direction of the wiring board is fixed at a prescribed position on each tabular conductor 1. The tabular conductor 1 is housed in a housing space 13 formed in each insulating plate 4 for housing this conductor 1. The thickness of the plates 4 is 4.0mm. The value of this thickness is a selected value so that the depth of the spaces 13 formed in the plates 4 is formed deeper than the thickness of the conductors 1 provided with an insulating coating layer 3.