| 摘要 |
PURPOSE:To increase the adhering strength of the intermediate part of a wire material to a lead by forming a cutout at the wire insertion hole opening edge of a capillary, and so forming the ceiling surface of the cutout as to be parallel to the end face of the capillary. CONSTITUTION:A cutout 26e in which a ceiling surface 26f is parallel to a flat surface 26b is cut on an inner oblique surface 26c of the end of a capillary 26. Accordingly, the intermediate part of a wire material 36 is pressed with a suitable area under a proper pressure to the flat surface of an inner part 11a of the lead. That is, even if the intermediate part of the material 36 is pressed by a strong pressing force, a predetermined collapsed thickness can be maintained at the cutout 26e, and adhered to a lead in a state having a predetermined tensile strength at the flat surface 26b. As a result, a wire 13 is connected to the lead at a bonding part 13b with satisfactory bondability. |
