This material uses special resins that provide improvement in mechanical properties such as X, Y and Z CTE. Material is especially good for performance in high frequencies.
Fabrication For Cirexx = Above Normal With Increased Cost:
Loss Tangent = .01 (good)
(excellent in digital circuits above 3.0 ghz)
(excellent in analog circuits up to 2.0 ghz)
(stable with temperature variations)
Er = 4.0 to 4.5 (at 1.0mhz)
(specific Er is dependent on glass -to-resin-)
(Er is virtually constant from 1.0mhz to 3.0ghz)
CTEr = + 220 ppm per degrees C (high). Tg is 250 degrees C.
Electro-Deposited Copper only.
(helps in peel strength and delamination)
This material uses special resins that provide improvement in mechanical properties such as X, Y and Z CTE. Material is especially good for performance in high frequencies.
