标签: stack-up

PCBStack-Up--Part5-Ten-LayerBoards[pic]PCBStack-UpPart5.Ten-LayerBoardsAten-layerboardshouldbeusedwhensixroutinglayersarerequired. Ten-layerboards,therefore,usuallyhavesixsignallayersandfourplanes. Havingmorethansixsignallayersonaten-layerboardisnotrecommended. Ten-layersisalsothelargestnumberoflayersthatcanusuallybeconvenientlyfabricatedina0.062"thickboard. Occasionallyyouwillseeatwelve-layerboardfabricatedasa0.062"thickboard,butthenumberoffabricatorscapableofproducingitarelimited..Highlayercountboards(ten+)requirethindielectrics(typically0.006"orlessona0.062"thickboard)andthereforetheyautomaticallyhavetightcouplingbetweenlayers. Whenproperlystackedandroutedtheycanmeet……