... TypeAluminum base,Double-sided aluminum base2SubstrateDomestic aluminum plate,TAIWAN Domestic aluminum plate,Bergquist material,Japan aliminum plate 3Base Copper Material Thickness18um,36um,72um4Heat ... ,3.0W/m-k,4.0W/m-k,High-conductivity5SurfacePlated gold,Imm gold,Plate Silver,Imm Silver,OSP,HASL,Imm Tin6Production Size500*600MM ...