IS550H low-CTE laminate is CAF resistant.
Comes in 2 to 60 mil (0.05 to 1.5mm) thickness. HTE Grade 3 and reverse treat copper foil; copper weight of 0.5 to 2oz. (18 to 70 microns). Tg is 200°C, Td is 400°C, Dk is 4.43. and Df is 0.016. Is for high power and high voltage applications.