... SSB of FR-1 1L, FR-1, 1.5mm, 1OZ, Green solder mask, White silkscreen, Punching, OSP. E-test SERIALITEMTECHNICAL DATA1Layers1-16 Layers2Base-materalFR-2, CEM-1, FR- ... fingerNi: 80~250u", Au: 1~5u"18Immersion gold(ENIG)Ni: 80~200u", Au: 1~8u"19Warp and twist≤0. ... + 12Ω(Normal)23Solder mask abrasion≥6H24Electric strength>1.3KV/mm25Peel Strength1.4N/mm26Thermal Shock3 x 10Sec@288ºC SSB of FR-1