Material Key Characteristics
Tg
(TMA)
Dielectric
Constant
1MHz
Low
Dissipation
Factor c/mus
Cost
FR4
Standard
135
4.7
.016
100
High Tg
170
4.3
.020
115-120
BT
E-Glass
170-190
4.3
.0075
150-200
D-Glass
170-190
3.5
.0015
Production is not Available
Polyimide
Modified
200
4.3
.011
250-270
Pure
280
4.0
.0080
300-350
PPO Polyphenylene Oxide
3.5
.0015
250-300
PTFE
2.6
.0005
1400
Cynate Ester
250
3.4