The RF-35TC from Taconic is a PTFE based, ceramic filled fiberglass laminate. This laminate has a low dielectric constant value of 3.50 and has extremely low Df of 0.0011. It provides a low dissipation factor with high thermal conductivity and bonds very well to low profile copper, further reducing insertion loss. The RF-35TC laminates are ideal for antennas, satellites, filters, couplers and power amplifiers.