| 摘要 |
PURPOSE:To mount easily a holder at a high precision in a given position on a lead frame, by providing an inner short rod, and removing the inner short rod after the holder is molded. CONSTITUTION:Under a condition in which inner leads 1 are connected by inner short rods 8 provided so as to surround the base stand 2, outer short rods 6, dam rods 5 and leads (the tips of the inner leads 1 and the base stand 2 are cut and separated), the lead frame is punched. Under this condition, since the inner leads 1 are fixed by the inner short rods 8, they are secured at designed positions even after press punching. After a pour of fluid insulating holder 7 is made by using a mold, it is cooled and hardened to hold the inner leads 1. Again by punching, the inner short rods 8 are cut. Where bonding onto the lead frame is done, the bonding may be done onto the inner leads 1 around the holder 7. |
