Test item

RF775

ASG

Dielectric constant

3.46@12GHz

2.61@12GHz

Loss tangent

0.0061@12GHz

0.0016@12GHz

Copper foil thickness/μm

19

19

PI film thickness/μm

24

26

Peel strength/(N/mm)

1.54

1.58

The moisture absorption rate

0.02

0.01

Thermal expansivity/(ppm/K)

16

18