Standard Stackup Impedance Calculator 1.378mil BodyUp 4.5276mil FR4 Prepreg 2116 4.25 0.02 4.5276mil FR4 Prepreg 2116 4.25 0.02 1.378mil None 11.811mil FR4 Core 4.5 0.02 1.378mil None 4.5276mil FR4 Prepreg 2116 4.25 0.02 4.5276mil FR4 Prepreg 2116 4.25 0.02 4.5276mil FR4 Prepreg 2116 4.25 0.02 1.378mil None 11.811mil FR4 Core 4.5 0.02 1.378mil None 4.5276mil FR4 Prepreg 2116 4.25 0.02 4.5276mil FR4 Prepreg 2116 4.25 0.02 1.378mil BodyDown