A brazing component (100', 200', 300') composed of an aluminium strip (100, 200, 300), in particular a tube or a disk, having a profile with a brazing connection, wherein the aluminium strip (100, 200, 300) has a strip thickness and, in at least one area of the aluminium strip (100, 200, 300), in the area of the intended brazing connection: - a first part of the strip thickness is taken up by a core layer (1, 10) of a first aluminium alloy; - at least a second part of the strip thickness is taken up by at least one plating layer (2.1, 2.2, 20.1, 20.2) of a second aluminium alloy; - the first and the second aluminium alloy are configured to form a "brown band" layer (30.1, 30.2) during a brazing process; - wherein the core layer is at least 5 mV more electropositive than the "brown band" layer, and wherein - a strip thickness of the aluminium strip (100, 200, 300) is less than 500 μm, and a thickness of the core layer (1, 10) and/or a thickness of the plating layer (2.1, 2.2, 20.1, 20.2) is configured such that - after the brazing process, at least 5% of the strip thickness that is taken up by the first aluminium alloy of the core layer (1, 10) still remains in the at least one area, and the "brown band" layer (30.1, 30.2) takes up more than 20% of the strip thickness, wherein the core layer (1, 10), before the brazing process, is configured to be multi-layered with one, preferably central, main core layer (1.1, 10.1) and at least one side core layer (1.2, 1.3), wherein the second aluminium alloy of the plating layer (2.1, 2.2, 20.1, 20.2) is an aluminium alloy of the 4000 series (AA4xxx), in particular an AA4343 or an AA4045 or an AA4047 or an AA4004 or an AA4104 aluminium alloy, and wherein the side core layer consists of an aluminium alloy of the 3000 series (AA3XXX), of the 5000 series (AA5XXX) or of the 6000 series (AA6XXX) and wherein the main core layer consists of an aluminium alloy of the 3000 series (AA3XXX), of the 5000 series (AA5XXX) or of the 6000 series (AA6XXX), wherein the main core layer (1.1, 10.1) and the side core layer (1.3) have a lower portion of Si than does the plating layer (2.1, 2.2, 20.1, 20.2), and the main core layer (1.1, 10.1) has a higher portion of Si than does the side core layer (1.2, 1.3), and wherein the "brown band" layer (30.1, 30.2) is formed primarily of the side core layer (1.2, 1.3) having an original thickness. - a first part of the strip thickness is taken up by a core layer (1, 10) of a first aluminium alloy; - at least a second part of the strip thickness is taken up by at least one plating layer (2.1, 2.2, 20.1, 20.2) of a second aluminium alloy; - the first and the second aluminium alloy are configured to form a "brown band" layer (30.1, 30.2) during a brazing process; - wherein the core layer is at least 5 mV more electropositive than the "brown band" layer, and wherein - a strip thickness of the aluminium strip (100, 200, 300) is less than 500 μm, and a thickness of the core layer (1, 10) and/or a thickness of the plating layer (2.1, 2.2, 20.1, 20.2) is configured such that - after the brazing process, at least 5% of the strip thickness that is taken up by the first aluminium alloy of the core layer (1, 10) still remains in the at least one area, and the "brown band" layer (30.1, 30.2) takes up more than 20% of the strip thickness, wherein the core layer (1, 10), before the brazing process, is configured to be multi-layered with one, preferably central, main core layer (1.1, 10.1) and at least one side core layer (1.2, 1.3), wherein the second aluminium alloy of the plating layer (2.1, 2.2, 20.1, 20.2) is an aluminium alloy of the 4000 series (AA4xxx), in particular an AA4343 or an AA4045 or an AA4047 or an AA4004 or an AA4104 aluminium alloy, and