SpecificationPower: 10W/20W/30W/40W/50W Color: Cold White 6000-6500K/Warm White 3000-3500KNatural White 4000-4500K/Pure White 5000-5500KSize: 19*19MM=0*0 Serial and parallel Mode: 10W=10C2B/20W=10C4B/30W=10C6B/40W=10C8B/50W=10C10BChip crystal size: 18*35mil Chip substrate thickness: 1mm 10w=1200lm /20W=2400lm 30W=3600lm /40W=4800lm 50W=6000lm Input Voltage: DC30-33V Input Current: 10W=300mA/20W=600mA/30W=900mA/40W=1200mA/50W=1500mA CRI: Ra≥90 Chip material: Gold Thread 99% Imported Bridgelux crystal chip Superconducting aluminum substrate W/(m·K)=4 note:1-Working conditions : LED desire radiator and the lamp bead temperature can not exceed 65 ℃2-Welding Temperature :Using high-temperature solder paste,The temperature of electric soldering iron is 300 degrees,≤2 seconds to complete Welding.