Patent ID: 7749612

Claim:
Resin coated metal foil including an insulating resin composition layer, of an insulating resin composition, and metal foil fixed to a single surface or both surfaces of said insulating resin composition layer, wherein: said insulating resin composition layer contains epoxy resin which is liquid at room temperature and a latent curing agent, surface treatment which is an anti-corrosive treatment, a chromate treatment and a silane coupling treatment performed with silane coupling agent containing amino functional silane is performed to at least an insulating resin composition layer side of said metal foil, surface roughness (Rz) of said metal foil is not more than 2.0 μm in both the surfaces, roughening treatment is not substantially performed to both the surfaces of said metal foil, and a thickness of said metal foil is not more than 3 μm.