| 摘要 |
PROBLEM TO BE SOLVED: To provide a printed wiring board wherein, with no additional positioning pattern, arrangement is easily confirmed after mounting of a part even with electronic parts, with narrow-pitched terminals, such as BGA, CSP, and LGA while a shorted circuit, wiring pattern failure and the like, due to the positioning pattern, are avoided for reliable circuit wiring. SOLUTION: A positioning mark (m) is formed with a reinforcing pattern 12 for a part pad 11 provided near the corner part of a part outline 14.
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