The thermosetting die bonding film of the invention is a thermosetting die bonding film used to produce a semiconductor device, which contains, as main components, 5 to 15% by weight of a thermoplastic resin component and 45 to 55% by weight of a thermosetting resin component, and has a melt viscosity of 400 Pas or more and 2500 Pas or less at 100.degree. C. before the film is thermally set.