Aluminium-based soldering foil

摘要

The aluminum based soldering foil comprises first and second aluminum films (1, 2), between which an intermediate layer (3) is arranged. The intermediate layer consists of 18-28 mass% of alloy component such as silicon and solder emerging during heating, 60-80 mass% of flux and 3 mass% of organic binder. The binder underlies pyrolysis during soldering process and comprises a polymer. The films have a thickness of 3-15 mu m. The intermediate layer has a mass of 10-12 gram per square meter. One of the both films consists of non-alloyed aluminum or aluminum alloy with silicon portion of 0.5-12%. An independent claim is included for a method for the production of soldering foil.