Material
FR-4 with Tg of 140 degree
FR-4 with High Tg of 160 degree
FR-4 with High Tg of 180 degree
Polyimide Material
Cyanate Ester (Low dk/Low Loss)
PTFE or equivalents
Modified Epoxies Material
Alternative HDI Dielectrics
Halogen Free Material
Getek
Nelco 6000
BT
Taconic
Rogers RO4000 Series
Rogers RO4350
Rogers RO3010
Risholite
GIL