Patent ID: 7278864

Claim:
An electrical connector, comprising: a base having a plurality of terminal slots spaced apart from one another, a plurality of solder ball slots spaced apart from one another, and a plurality of channels respectively communicating the terminal slots with the solder ball slots, wherein the solder ball slots are located under the corresponding terminal slots, respectively; a plurality of solder balls respectively disposed in the solder ball slots, wherein each of the solder balls has a bottom end projecting over a bottom of the base; and a plurality of terminals respectively disposed in the plurality of terminal slots, wherein each of the terminals has a contact extending toward a top of the terminal slot and at least one connecting sheet extending toward a bottom of the terminal slot, the at least one connecting sheet extends to the solder ball slot through the channel and intrudes into the solder ball to form a locking structure, which prevents the solder ball from falling out of the solder ball slot, the solder ball is formed with a recess, which has a first portion for accommodating the at least one connecting sheet and a second portion left empty, and the at least one connecting sheet of the terminal has a first plate, which is accommodated in the solder ball slot, and a second plate, which presses against the solder ball and is connected to the first plate so that a crease is formed between the first plate and the second plate.