Patent ID: 7140886

Claim:
An improvement on a contact terminal structure to be disposed into the terminal block on the base of an integrated circuit, comprising: an open sided main body having an elongated flat rear structure, an upper portion and a lower portion; and a generally horizontal flat soldering end disposed in said upper portion and extending outwardly from one end of said upper portion of said main body and provided with an aligning portion of an arcuate hollow shape with a round concave periphery for placing a solder ball; and a supporting portion disposed below said aligning portion and extending outwardly from an appropriate position on said rear structure in parallel relationship with said solder end and being used for supporting said solder ball; a contact end disposed in said lower portion and extending outwardly from and integral with a bottom end of said rear structure and provided contortedly with a corresponding contact portion at an appropriate position thereon; wherein during placing a solder ball, a flux is applied on said supporting portion to facilitate the alignment of said solder ball; and wherein in order to place more smoothly a larger solder ball into said aligning portion and stop it against said supporting portion, the free end of said aligning portion can be broken into a breaking line such that said aligning portion has a defined divergent angle so as to place in smoothly said larger solder ball.