double sided aluminum base pcb 2L, CCAF-01, 1.0mm, 70um, purple solder mask, white silkscreen, Immersion gold(i ... FR-4, Metal base, Rogers...3Board thickness8~126 mil (0.2~6.0mm)4Copper foil0.5oz, 1oz, 2oz, 3oz, 4oz, 5oz ... ~200u", Au: 1~8u"19Warp and twist≤0.75%20Outline Tolerance±6mil (0.15mm)21Impedance tolerance±10%22Insulation resistance1E + 12Ω( ... x 10Sec@288ºC Double Sided Aluminum Base PCB