Package for integrated circuit device

Abstract

Abstract PURPOSE:To insert and mount a large number of leads easily by making the length of internal leads longer than that of external leads in the arrangement of the leads. CONSTITUTION:A large number of leads lead out of both side surfaces of a package proper 1 are vertically bent downward where close by the main body 1 and where separate from it, thus each forming internal lead rows 2 and external lead rows 3. The length of vertical sections in several lead in the rows 2 is made longer than that of vertical sections in respective lead in the rows 3. The constitution is applied to three rows or more of lead rows. According to such constitution, the internal leads are inserted into correct positions first while being corrected when a package is mounted to a socket or a printed board, and the external leads can be inserted into accurate positions while being corrected. Consequently, a large number of the leads can be inserted and mounted easily without being broken and bent.

Inventors

• 👤 Eitetsu Nishimura
• 👤 英哲 西村

Bibliographic Details