| 摘要 |
A printed wiring board is provided to be used when a plurality of the same electronic components are arranged in parallel and stably to drive the electronic components for many hours. A printed wiring board group includes a plurality of printed wiring boards having a wiring pattern(14) with a plurality of wirings made of a conductive metal on an insulating film. A difference between an average electric resistance value of the wiring formed on one printed wiring board(A) and an average electric resistance value of the wiring formed on another printed wiring board(B) adjacent to the printed wiring board is in the range of Œ5% for an average electric resistance value of the wirings in the two printed wiring boards. A difference between an electric resistance value of the printed wiring board between an outer lead and an inner lead of the outermost wiring formed closest to the another printed wiring board and an electric resistance value of the another printed wiring board between an outer lead and an inner lead of the outermost wiring formed closest to the printed wiring board is in the range of Œ11.05% for the average electric resistance value of the wirings in the two printed wiring boards. |
