Patent ID: 6546620
Filing Date: 2003-04-15
Classification: H01L,H05K,Y10T

Abstract:
A method comprising:screening a solder paste onto a first contact on a first surface of a substrate, said solder paste comprising a first solder and a first solder flux; aligning a terminal of a passive chip component with said solder paste; melting said solder paste to form a solder joint between said first contact and said terminal, wherein solder flux residue from said first solder flux is formed; removing said solder flux residue; forming a solder bump on a bond pad on a first surface of an active chip component; aligning said solder bump with a second contact on said first surface of said substrate; and melting said solder bump to form a bump between said second contact and said bond pad and to mount said active chip component to said first surface of said substrate, wherein said solder joint does not melt during said melting of said solder bump.