| 摘要 |
PURPOSE:To improve the reliability of connection, to increase the number of internal leads and to cope with a change into multiple pins by setting up a relay lead between a pellet and the lead and connecting the relay lead to each of them. CONSTITUTION:The size of a tab 2 is enlarged, a region in which the internal leads 3 are arranged is spread, and number of which the leads 3 can be disposed is increased. The relay leads 7 are disposed and formed around a square Si substrate 8 and thin-film leads 9 radially only by number corresponding to the internal leads 3 on the tab 2, and both ends of the leads 9 are spread slightly and the joining of wires is facilitated. The leads 7 are fixed onto the tab 2 by an AuSi eutectic, the pellet 10 is fastened at a central section, the electrode pad 11 of the pellet and the inner terminals of the leads 9 and the outer terminals of the leads 9 and the leads 3 are connected 13, and the whole is sealed 14 with a resin according to a predetermined method. According to the constitution, the reliability of connection is improved even when the number of the electrode pad 11 and the leads increase attendant with the increase of a degree of integration of the pellet 10, and the device of high reliability corresponding to the change into multiple pins is obtained. |
