| abstract |
The flux used for brazing a tin-silver-copper alloy contains an imidazole compound and/or an imidazoline compound, a dicarboxylic acid having 3 to 36 carbon atoms, and an iodine salt of quaternary ammonium, the total amount of the flux , the content rate of dicarboxylic acid is 6 mass % or more and 25 mass % or less, and the content rate of iodine is 200 ppm or more and 3600 ppm or less. |