The DiClad 880-IM from Rogers Corporation is a Laminate with Dk (Dielectric Constant) 2.17 to 2.2, Df (Dissipation Factor) 0.0009, Td 550 Degree C, Thickness Inches 0.030 Inches, 0.060 Inches, Thickness 0.762 mm, 1.524 mm. More details for DiClad 880-IM can be seen below.