abstract |
A water-dispersible flux composition comprises solid fine particles containing a carboxyl group-containing resin, an activator, a dispersing agent, and water, wherein all solid fine particles have a particle diameter in the range of 0.03 μ to 20 μ and the proportion of the solid fine particles having a particle diameter of 0.03 μ to 10 μ to all of the solid fine particles (100% by mass in total) is 90% by mass or above. |