Высокая плотность многослойных печатных плат

High density multilayer pcb: our company is an expert PCB supplier with more than 10 years experiences,With a variety of advanced equipment and professional staff, we have ability to develop and process all kinds of PCBs catering to customer’s demands We can gurantee the best quality with competitive price and on-time delivery . The specific product information: 1 The type of PCB 4layer and above through hole boards or HDI PCB 2 layer 4-20 3 material FR4,LDP(LDD),RCC 4 Layer structure 1+N+1，1+1+N+1+1,2+N+2,3+N+3 5 Board thickness 0.4-3.2mm 6 Surface treatment Immersion gold+OSP .Immersion gold,OSP 7 Min. Mechanical Drilled Hole Size 8mil (0.200mm) 8 Min. Laser Drilled Hole Size 4mil (0.100mm) 9 Min.Line Width/Spacing 3mil (0.075mm) 10 Maximum Production panel size 21.5” x 24.5” (546mm x 622mm) 11 Line width/spacing +/-10%----+/-20% 12 PTH Diameter +/-0.002 inch (0.050mm) 13 Non-PTH Diameter +/-0.002 inch (0.050mm) 14 Hole Location +/-0.002 inch (0.050mm) 15 Hole to Edge Dimension +/-0.004 inch (0.100mm) 16 Edge to Edge Dimension +/-0.004 inch (0.100mm) 17 Layer to Layer Registration +/-0.003 inch (0.075mm) 18 Controlled Impedance +/- 8% 19 Allowable Warpage Max. 0.5% 20 Certificate UL.ISO9001.ROHS,ISO14001 21 IPC standard IPC-A-600G