Patent ID: 8105687

Claim:
An electroconductive bonding material comprising: a thermosetting resin; a first metal powder which is melted at a temperature equal to or lower than a thermosetting temperature of the thermosetting resin, wherein the first metal powder is a Sn—Bi alloy powder containing 58 wt. % or more of Bi; a second metal powder which is not melted at the temperature equal to or lower than the thermosetting temperature of the thermosetting resin and which reacts with the first metal powder to form a reaction product having a melting point of 300° C. or higher during heat-hardening of the thermosetting resin; and a reducing substance which removes an oxide formed on a surface of the second metal powder, wherein a total content of the first metal powder and the second metal powder is 75% to 88% by weight, and a particle size ratio D 1 /D 2 of an average particle size D 1 of the first metal powder to an average particle size D 2 of the second metal powder is 0.5 to 6.0.