... contrary, and this series circuit.4 layer Blind Via pcb board, one side of the hole in the board surface, and then through to ... FR4 PCB(2layer,4 layer,multilayer) Rogers(RO4003,RO4350,RO5880,RO3003,RO3010,RO3206,RO3035,RO6010) F4B high frequency pcb board Taconic(TLX-8 ... lead free, HAL, Chemical tin, Chemical Gold, Immersion Silver/Gold, OSP, Gold platingCompetitive Advantage: 1) With UL,ROHS,ISO,IPC 2 ...