Standard Stackup Impedance Calculator 1.378mil BodyUp 2.7559mil FR4 Prepreg 1080 4 0.02 2.7559mil FR4 Prepreg 1080 4 0.02 1.378mil None 7.874mil FR4 Core 4.4 0.02 1.378mil None 2.7559mil FR4 Prepreg 1080 4 0.02 4.5276mil FR4 Prepreg 2116 4.25 0.02 2.7559mil FR4 Prepreg 1080 4 0.02 1.378mil None 7.874mil FR4 Core 4 0.02 1.378mil None 2.7559mil FR4 Prepreg 1080 4 0.02 4.5276mil FR4 Prepreg 2116 4.25 0.02 2.7559mil FR4 Prepreg 1080 4 0.02 1.378mil None 7.874mil FR4 Core 4.4 0.02 1.378mil None 2.7559mil FR4 Prepreg 1080 4 0.02 2.7559mil FR4 Prepreg 1080 4 0.02 1.378mil BodyDown