LED integrated COB lamp beads $ 4.26 Dimensions: 6040 (mm) Light emitting surface size: 2626 (mm) Power: 20/30/50 (W) Color rendering index: Ra80 Luminous flux: 1800/2700/4500 (lm) Forward voltage: 110/220 (V) Substrate material: ordinary aluminum substrate Light angle: 120 () Luminous efficiency: 90 (lm/W) Color tolerance: 500K (SDCN) Thermal resistance: 2 (/W) Maximum allowable junction temperature: 120 () 1000 hours routine aging: 98 (%) 6000 hours routine aging: 98 (%)
