1.6inch down light aluminum base pcb 2.size: D98*1.6mm, copper 1oz 3.white ... 4.OSP,1.5W/MK, DC1500V 1.6inch down light aluminum base pcb2.size: D98*1.6mm, copper 1oz3.white soldermask, black ... legend4.OSP,1.5W/MK, DC1500VSanny Capacity of aluminum base pcbNO. ITEM INDEX 01Surface treatmentHAL(lead free), Immersion Gold, OSP02LayerSingle ...