Patent ID: 6514845
Filing Date: 2003-02-04
Classification: H05K,Y02P

Abstract:
A method for attaching an electronic component having Ball Grid Array contacts to a circuit board contact array to prevent the solder balls of the ball grid array from fracturing and distorting during solder reflow, where at least some of the contacts in the circuit board array have vias extending through the circuit board, comprising the steps of:placing a solder form over each via in each contact of the contact array, placing a solder flux on the circuit board contact array under the solder form; placing the electronic component over the contact array such that each ball of the ball grid array of the electronic component resides on a solder form; and after placing the electronic component over the contact array, subjecting the electronic component and circuit board to a solder reflow process to seal the component to the circuit board and flow a portion of each solder form over the via into said via but not the balls of the BGA.