| 摘要 |
A printed circuit board is provided to prevent a short between pads by inserting a part of soldering into a contact auxiliary hole of a pad unit. A printed circuit board(100) includes a plurality of contact units(101), a plurality of pad units(103) and a plurality of contact auxiliary holes(108). The contact unit contacts the terminal of the electronic component. The pad unit is formed for the contact with the external device. The pad has a semi circular shape. The pad unit includes an upper pad(105) and a lower pad(106). The upper pad and the lower pad are electrically and physically connected. The contact auxiliary hole is formed in an overlap region of the upper pad and the lower pad. The inner surface of the contact auxiliary hole is plated with the copper. The contact auxiliary hole passes through the printed circuit board.
|
