| abstract |
(57) [Summary] [Purpose] To provide a flux for non-cleaning soldering that can comply with CFC regulations without causing corrosion of the base material and deterioration of electrical characteristics without cleaning the flux residue after soldering. [Composition] A soldering flux containing a bis (2-oxazoline) compound, a dithiol compound, an organic carboxylic acid compound and an activator. Further, the soldering flux containing an organic solvent, a thermoplastic resin, or an epoxy group-containing compound. |