Product Model: Rogers RO4350B High Frequency Board Material: Rogers RO4350B Layer Count: 2 Layers Dielectric Constant (DK): 3.48 Dielectric Thickness: 0.813mm Thermal Conductivity: 0.69 W/m·K Finished Thickness: 1.0mm Copper Specification: Base 0.5oz, Finished 1oz Surface Treatment: Immersion Gold Application: Radio frequency communication instrument PCB, microwave antenna PCB