Patent ID: 6703113
Filing Date: 2004-03-09
Classification: B23K,C22C,Y10T

Abstract:
A solder composition which is Pb-free and comprises:at least about 90% by weight of Bi as a first metallic element; an amount of not more than about 9.9% by weight of a second metallic element which forms a binary eutectic with said first metallic element selected from the group consisting of Ag, Cu and Zn; and about 0.1% to 3.0% by weight of a third metallic element which causes a solid and liquid to coexist at about the solidification temperature of said eutectic; wherein all percents by weight are based on the whole solder composition, and wherein said solder composition does not contain a low melting-point eutectic with a solidus temperature of less than about 200Â° C.