| 摘要 |
PURPOSE:To clamp a lead frame positively by forming depth from a guide surface of the recessed section of a sample base in size shallower than the quantity of a pellet fitting section being displaced and holding down only a lead section by the hold-down section of a hold-down plate. CONSTITUTION:In the sample base 21, the depth of the recessed section 21b from the guide surface 21a is formed in size slightly shallower than the quantity of the pellet fitting section 12 displaced. A recessed section 21c is formed to a guide surface 21a section corresponding to the hold-down section 24a. Consequently, the lower surface of the pellet fitting section 12 is fast stuck to the recessed section 21b at all times in the lead frame 10, and the state in which there is a clearance between the lead section 14 and the guide surface 21a is brought. Accordingly, only the lead section 14 supported in a cantilever shape is pushed down by the hold-down section 24a, and the lead section 14 can be brought into contact positively with the guide surface 21a. |
