BRAZING SHEET AND PRODUCTION METHOD THEREFOR

A brazing sheet, in which brazeability when brazing in an inert gas atmosphere is satisfactory and an increase in materials cost can be constrained, and a manufacturing method thereof are provided. The brazing sheet includes: a core material having a chemical composition that contains Mg: 0.20 mass% or more and 1.3 mass% or less, the remainder being A1 and unavoidable impurities; and a filler material layered on the core material and having a chemical composition that contains Si: 6.0 mass% or more and 13.0 mass% or less, Bi: 0.0040 mass% or more and 0.070 mass% or less, and Mg: 0.050 mass% or more and less than 0.10 mass%, the remainder being A1 and unavoidable impurities. This brazing sheet is usable in brazing performed in an inert gas atmosphere or in a vacuum without using a flux.