Patent ID: 7043832

Claim:
A method for fixing tin balls in one of a connector or an IC device to respective welding portions of terminals of an electric connector, IC or other electronic element so that the terminals can be welded to the tin balls of the ball grid array seat; the method comprising the steps of: (a) selecting a ball grid array seat including internal embedded terminals, a bottom of each terminal having a terminal welding portion; (b) covering a bottom of the ball grid array seat by a mold plate having a plurality of recesses aligned with welding portions of the terminals; (c) filling the tin glue into the recesses of the mold plate so that the tin glue exactly encloses the welding portions of the terminals; (d) taking out the mold plate so that the tin glue is left in the welding portions of the terminals; and (e) melting the tin glue so as to condense the tin glue into tin balls, the condensed tin balls being combined with the welding portions at the lower ends of the terminals of the ball grid array seat.