Patent ID: 7752749

Claim:
A method of mounting an electronic component comprising an electrode terminal on a wiring substrate comprising a connecting terminal via solder, comprising: a first step for securing one of the wiring substrate and the electronic component; a second step for applying a resin composition including solder powder, convective additive and resin having fluidity at a melting temperature of the solder powder to a region where the connecting terminal is formed or a surface on which the electrode terminal is formed in one of the wiring substrate and the electronic component which is secured; a third step for making the electrode terminal of the electronic component and the connecting terminal of the wiring substrate abut each other with the resin composition interposed therebetween in a state where one of the wiring substrate and the electronic component, whichever is not secured, is held; and a fourth step for adhering the electrode terminal and the connecting terminal with each other using the solder powder by heating at least one of the wiring substrate and the electronic component while the state where the electrode terminal and the connecting terminal abut each other is retained, wherein: the solder powder is melted, and the melted solder powder is grown in such a manner that the solder powder is self-assembled between the electrode terminal and the connecting terminal by the convective additive, so that the electrode terminal and the connecting terminal are solder-connected to each other in the fourth step, and the convective additive comprises a material which generates a gas by boiling or dissolving at the melting temperature of the solder powder.