The CLTE-MW laminates from Rogers are ceramic filled, woven glass reinforced PTFE composites for Millimeter Wave Applications. They are reinforced with spread glass, which minimize the high frequency glass weave effects on electromagnetic wave propagation. Their woven glass reinforcement also provides excellent dimensional stability. Other key features of the laminate include low z-axis CTE (30 ppm/°C) for excellent plated through hole reliability, a low loss tangent of 0.0015 at 10 GHz to enable low loss designs, and low moisture absorption of 0.03% to ensure stable performance in a range of operating environments.
Thermal conductivity of 0.42 W/(m.K) enables heat dissipation in aggressive designs along with a high dielectric strength of 630 V/mil to ensure good z-axis insulation between conductor layers. The UL94 V-0 flammability rating enables the use of CLTE-MW laminates in commercial applications.
These laminates are designed to provide low thermal expansion and dielectric constant stability. These laminates are available with a full range of cladding types, including Electrodeposited, Reverse Treated or Rolled copper foil and Resistor Foils. They are well suited for applications that have limitations in thickness due to either physical or electrical constraints.
