SSB for Telephone(Gold Plating With Carbon Oil) 1L, FR-2, 1.2mm, 1OZ, Green solder mask color, Plating Gold SERIALITEMTECHNICAL DATA1Layers1-16 Layers2Base-materalFR ... (Entek)2-5um17Gold fingerNi: 80~250u", Au: 1~5u"18Immersion gold(ENIG)Ni: 80~200u", Au: 1~8u"19Warp and twist ... .4N/mm26Thermal Shock3 x 10Sec@288ºC SSB for Telephone(Gold Plating With Carbon Oil)