Materials | Line Width and Space | Drilling | Routing | Scoring | Edge Beveling | Quality | Multilayer Lamination | Soldermask | Legend | Hole Plugging and Cu Plating | Surface Finishes | Controlled Impedance | Electrical Test | UL Requirements | Heat Sink Bonding | Metal Carrier Finishes (Aliminum) | Metal Carrier Finishes (Copper)     Standard Special Materials Panesl Sizes (inches) 18x24 9x12, 12x18, 16x18, 20x24   Number of Copper Layers 6 8+   Laminate Type FR-4 (Tg=135°C Min.), FR-4 (Tg=170°C Min.) Getek, PTFE (See Teflon Selector Guide), BT   Foil Weight (inner layer) 1/2, 1 oz. 2 oz.   Foil Weight (outer layer) 1/2, 1 oz. 2 oz.   Overall Board Thickness 0.031"-0.150" 0.004"-0.031", 0.150"-0.250"   Thickness Tolerance +/- 10% +/- 8%   Warp and Twist 1.5% 0.75%   Min. Dielectic Spacing 0.004"