| 摘要 |
PURPOSE:To protect a bonding lead from buckling by a method wherein a portion with its width somewhat smaller than a prescribed lead width is provided at the end of a bonding lead and is pressed along the direction of the lead length for the realization of a flattened bonding surface. CONSTITUTION:At the ends of leads parallelly arranged in the direction of the thickness of a supporting metal plate 5, a pellet mounting section 1 and wire-bonding section 3 are formed under press. In this process, the end of a lead constituting a bonding section 3 is provided with a smaller-width section 2. The smaller-width section 2 is pressed along the direction of the lead length for the formation of a flattened end surface. As the result, difference in height is created along the direction of the lead width on the boundary of the smaller- width section 2 and bonding section 3. This protects the bonding section 3 from buckling. |
