Rogers Corporation Microwave Materials Division has an extensive selection of materials most widely used in the commercial communications market.
Greatest advantages are having X, Y and Z CTE matched to copper in addition to very low CTEr. Both properties allow the material to be extremely stable in high temperature environments and up to 40 GHz in analog applications. This material also blends well with FR-4 and other substrates to make dependable hybrid constructions.
RO4350® high frequency circuit material is UL rated (94V0) and thermal conductivity is much higher than FR-4 joined with a low stable Er and Loss Tangent. Layer-to-Layer Thickness Control is equal to +/- .001, great for Multilayer Construction, including hybrids with other laminates.
Hybrid Features
CTEr= +40(4003) / +50(4350)ppm per °C (Low). Tg is 280°C
ER = 3.38(4003) / 3.48 94350 at 10.0 GHz
ER is constant to 40.0 GHz
CTEr = +40(4003) / +50(4350)PPM per °C (Low). TG is 280°C
ED Copper Only
Layer-To-Layer Thickness Control = +/- 0.001
Laminate Cost = $9.50 per square ft.
Fabrication Costs = Normal To Slightly Increased
RO4003® and RO4350® are licensed trademarks of Rogers Corporation.
For more information of Rogers 3000 and 4000 products here.
RO4350® high frequency circuit material is UL rated (94V0) and thermal conductivity is much higher than FR-4 joined with a low stable Er and Loss Tangent. Layer-to-Layer Thickness Control is equal to +/- .001, great for Multilayer Construction, including hybrids with other laminates. 
