CEM-1 PCB 1L, CEM-1, 1.6mm, 1OZ, Green solder mask color, OSP(i.e.:Entek) SERIALITEMTECHNICAL DATA1Layers1-16 Layers2Base-materalFR-2, CEM-1, FR-4, ... fingerNi: 80~250u", Au: 1~5u"18Immersion gold(ENIG)Ni: 80~200u", Au: 1~8u"19Warp and twist≤0.75 ... 22Insulation resistance1E + 12Ω(Normal)23Solder mask abrasion≥6H24Electric strength>1.3KV/mm25Peel Strength1.4N/mm26Thermal Shock3 x 10Sec@288ºC CEM-1 PCB