... trace and space: 4mil/4milSolder mask: RedSilkscreen: WhiteApplication: PCBA for the Internet of ThingsMin footprint: 0402Certificate: CE, Rosh, UL, ... trace and space: 5mil/5milSolder mask: GreenSilkscreen: WhiteApplication: PCBA for the Internet of ThingsMin footprint: 0402Certificate: CE, Rosh, UL, ISO9001 ... nickel,Lead free, tin immersion ead free H.A.S.L Entek gold-finger,Immersion Tin,OSP and ...