| 摘要 |
PROBLEM TO BE SOLVED: To obtain a printed-wiring board that easily prevents lift-off from occurring even if lead-free solder is used, has superior productivity, and reduces the costs. SOLUTION: A lead section 5 of an insertion component is inserted into a conductive section 31 of a through hole 3 in a printed-wiring board body 1, and is soldered for mounting. The circumference section of the through hole 3 on the surface at an insertion component-mounting side on the printed-wiring board 1 is covered with solder resist 2, and exposure in a land section 4 is set to 100μm or less.
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