| 摘要 |
PURPOSE:To eliminate the displacement of upper and lower semiconductor devices and the electrically improper opening of the upper device due to the end of leads by forming slots or recesses for preventing the displacement of positions on the lower leads of the position that the leads of upper and lower stages are superposed. CONSTITUTION:Slots or recesses 3 are formed at the portion where external leads 2 are superposed, and the leads 2 of the semiconductor device 1 of upper stage are engaged with the slots or recesses 3 of the leads 2 of the semiconductor device 1 of lower stage. Thus, the displacement of upper and lower stages and the improper opening due to the bent of the leads can be prevented. |
