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 　　 Normal Printed Circuit Board Most PCBs for simple electronics are simple and composed of only a single caste. More sophisticated attack analogous as computer plates cards or motherboards can have 2 or multiple layers, sometimes over to twelve.        https://www.ymspcb.com/2-layer-immersion-gold-board-yms-pcb.html 　　Parameters 　　Layers 2 Double sided PCB 　　Thickness1.6 mm 　　Base Material S1150G Halogen Free 　　Mininum Hole Size ：0.2 mm 　　Minimum Line Range/ Concurrence ：0.15 mm/0.15 mm 　　Size ： 480 mm × 450 mm 　　Aspect Rate ： 8 1 　　Face treatment ： Lead free HASL 　　Special fashion Counterbore 　　ApplicationsMain Board/ Consumer electronics 　　Published Circuit Board Preface 　　A published circuit board (PCB) mechanically supports and electrically connects electrical or electronic factors using conductive tracks, pads and other features etched from one or farther distance layers of bull laminated onto and/ or between distance layers of anon-conductive substrate....

 　　 Normal Printed Circuit Board Most PCBs for simple electronics are simple and composed of only a single caste. More sophisticated attack analogous as computer plates cards or motherboards can have 2 or multiple layers, sometimes over to twelve.       https://www.ymspcb.com/normal-printed-circuit-board-standard-pcb-countersink-ymspcb.html 　　Parameters 　　Layers 2 Double sided PCB 　　Thickness1.6 mm 　　Base Material EM285 Halogen Free 　　Mininum Hole Size ：0.2 mm 　　Minimum Line Range/ Concurrence ：0.15 mm/0.15 mm 　　Size ： 480 mm × 250 mm 　　Aspect Rate ： 8 1 　　Face treatment ： ENIG 　　Special fashion Countersink 　　ApplicationsMain Board/ Consumer electronics 　　Published Circuit Board Preface 　　A published circuit board (PCB) mechanically supports and electrically connects electrical or electronic factors using conductive tracks, pads and other features etched from one or farther distance layers of bull laminated onto and/ or between distance layers of anon-conductive sub...