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 Metal carrier finishes over aluminum Electroless Ni(per MIL-C-26074E,Class 1,Grade A) Copper flash Electrolytic Silver(per QQ-S-365D,Type 1,Grade B) 100-300 µ in Ni 10 µ in nominal Copper 200 µ in min. Silver Ni-Range specified Silver-Range specified   Electroless Ni(per MIL-C-26074E,Class 1,Grade A) Copper flash Electrolytic Matt Tin 100-300 µ in Ni 10 µ in nominal Copper 200 µ in min. Tin Ni-Range specified Tin-Range specified   Electroless Ni(per MIL-C-26074E,Class 1,Grade A) Copper flash Electrolytic Ni(per MIL-S-QQN-290A,Class I,SD) Electrolytic Soft Au(per MIL-G-45204C,Type III,Grade A) 50-100 µ in Ni 10 µ in nominal Copper 100-300 µ in Ni 3 µ in min. Au Ni-Range specified Gold-Range specified   Electroless Ni(per MIL-C-26074E,Class 1,Grade A) Copper flash Electrolytic Ni(per MIL-S-QQN-290A,Class I,SD) Electrolytic Hard Au(per MIL-G-45204C,Type II,Grade C) 50-100 µ in Ni 10 µ in nominal Copper 100-300 µ in Ni 3 µ in min. Au Ni-Range specified Gold-Range specified   Chromate conversion coatin(per MIL-C-5541E,Class 3) Coverage