| 摘要 |
PURPOSE:To prevent disconnection of wire and prevent generation of void in the sealing process by connecting islands to the external end of lead frame with many pin suspending portions. CONSTITUTION:An island portion 1 which mounts elements, an inner lead portion 5 having the wire boding portion and an outer lead 6 having external terminals are continuously provided with the external end of lead frame 2 and tie- bar 4. Two island suspending pins 3 connect the island portion 1 and the external end of lead frame 2. In this case, since the island portions 1 are connected symmetrically in the right and left to the end portion 2 or tie-bar 4, if the frame is waved, the stepped portion between the island 1 and leads 5, 5' is only a little and therefore wire disconnection is not generated. Moreover, since this lead frame is capable of providing wider gate, generation of void at the sealing process can be prevented. |
