High Frequency PCB Built on RO4350b with Blind Via and Immersion Gold

High Frequency PCB Built on RO4350b with Blind Via and Immersion Gold  Product DescriptionBase material: RO4350B 0.254 mm (10mil)Layer count: 4 layersType: Individual boardsFormat: 42mm X 36mm = 1 type = 1 piecesSurface finish: Immersion goldCopper weight: Outer layer 35 um/ Inner layer 0 umSolder mask / Legend: Green / WhiteFinal PCB height: 0.3 mmStandard: IPC 6012 Class 2Packing: 25 pieces are packed for shipment. Lead time: 10 working daysShelf life: 6 months  Applications1) Attenuator, Automatic gate induction; 2) LNB's for direct broadcast satellites; 3) Microstrip antenna, spread spectrum; 4) Microstrip and cellular base station antennas and power amplifiers; 5) RF identifications tags6) Spread spectrum communications systems7) Trunk amplifier, splitter module etc. Parameter and data sheet   PCB SIZE42 X 36mm=1PCSBOARD TYPEDouble sided PCBNumber of Layers4 layersSurface Mount ComponentsYESThrough Hole ComponentsYESLAYER STACKUPCopper ------- 35um(1 oz)+plate TOP layerRO4350B 0.254mmCopper ------- 35um(1oz) + plate BOT LayerTECHNOLOGY  Minimum Trace and Space: 7.1 mil / 5 milMinimum / Maximum Holes: 0.4 mm / 5.2 mmNumber of Different Holes: 6Number of Drill Holes: 41Number of Milled Slots: 0Number of Internal Cutouts: 3Impedance Control: NoNumber of Gold finger: 0BOARD MATERIAL  Glass Epoxy: RO4350B Tg280ºC, er