| 摘要 |
PROBLEM TO BE SOLVED: To utilize the self-alignment function of a solder when a chip type electronic part is attached to the land of a printed wiring board. SOLUTION: Each land 10 of a printed wiring board 30 comprises a rectangular part 10A of such length and width as corresponding to an electrode and a protruding part 10B extending outside the rectangular part. The distance between outer edges of the protruding parts 10B of the two lands is larger than the dimension in lengthwise direction of a chip type electronic part 20 while the distance between inner edges of the rectangular parts 10A of the two lands is equal to that between inner edges of two electrodes of the chip type electronic part 20.
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