The SCGA-500 GF220 from Shengyi Technology Co, Ltd is a Laminate with Dk (Dielectric Constant) 2.2, Df (Dissipation Factor) 0.0009, Thickness Inches 0.010 to 0.060 Inches, Thickness 0.254 to 1.524 mm, Frequency 1 to 20 GHz. More details for SCGA-500 GF220 can be seen below.