... FR4 material, board T1.6mm 2. Green solder mask, Hasl lead-free 3. Impedance control board 1.FR4 material, board T1 ... .6mm2.Green solder mask, Hasl lead free3. 4 Layer Impedance control board4.Fast delivery time,with competitive pricing5 ... -4-TG170/TG180,Halogen Free,Rogers,Arlon,Taconic,Isola,PTFE, BergquistSurface Treatment: HASL,HASL lead-free,HAL,Flash gold,immersion gold,OSP ...