RESIN COMPOSITION FOR MILLIMETER-WAVE SUBSTRATE, ADHESIVE FILM FOR MILLIMETER-WAVE SUBSTRATE, MILLIMETER-WAVE SUBSTRATE, MILLIMETER-WAVE RADAR SUBSTRATE, AND SEMICONDUCTOR DEVICE

摘要

The present invention provides a resin composition that is for a millimeter-wave substrate, that provides a cured product having excellent high-frequency characteristics, a small temperature dependence of tanδ, and superior flame retardance, and that can be used as an insulator for a millimeter-wave radar. The resin composition for a millimeter-wave substrate contains a hydrogenated styrene-based elastomer (A), a cross-linkable compound (B) having a biphenyl backbone, and a flame retardant (C) containing a metal salt of phosphinic acid, and is characterized in that: component (C) accounts for 15-50 parts by mass with respect to a total of 100 parts by mass of component (A), component (B), and component (C); and the rate of change of dielectric tangent of a cured product of said resin composition at 10 GHz at 120°C is at most 30% with respect to that at 25°C.