Patent ID: 7534113

Claim:
An electrical contact comprising: a retention portion; a tail portion extending downwardly from a lower portion of the retention portion and being adapted for electrically engaging with an electrical component, a solder portion defining a multilateral-shaped recess on a bottom surface thereof for receiving a solder ball therein; a head portion extending upwardly from and coplanar with the retention portion; a spring arm extending from the head portion and spatially arranged with respect to the retention portion; wherein when a solder ball is receiving in said multilateral-shaped recess, a channel being formed between inner surface and a surface of the solder ball and communicating with the outer space, said channel allows the vaporized flux material to be laterally dissipated through the channel, during the reflowable process wherein the spring arm is angled an acute angle with the head portion; wherein said inner surface of the multilateral-shaped recess comprising several planes and curved surface; wherein dimension of the recess is gradually increases from bottom portion, which is away from the bottom surface of the solder portion, to upper potion located at the bottom surface of the solder portion.