| 摘要 |
<p>PURPOSE:To easily recognize the first pin of an electronic component not only from a component mounting surface but also from a soldering surface by forming the shape of a pad for the first pin or a pad near the first pin different from the shape of a pad for other pin at both side surfaces of a printed board. CONSTITUTION:The shape of a pad 41 at a first pin insertion part 6 is formed in a square shape, and formed in a shape different from circular pads 4 at for another pin insertion parts 61, 61,.. The resist escape 51 around the pad 41 is similarly formed in a square shape to match it, and the pad 41 and the escape 51 are formed in a square shape not only on the component mounting surface but also on the soldering surface only at the first pin insertion part.</p> |
