| 摘要 |
Provided is a bonding capillary which is characterized in that: the bonding capillary is provided with a body comprising a through-hole into which a wire is inserted, a first pressing face which presses on the wire and has a first sloping face provided in the periphery of the through-hole and inclining along the extending direction of the through-hole, and a second pressing face which presses on the wire and has a tapered face provided between the first sloping face and the through-hole and a second sloping face provided between the tapered face and the first sloping face; and the root-mean-square gradient of the roughness curve element on the second sloping face is smaller than the root-mean-square gradient of the roughness curve element on the first sloping face. |
