3W 5W 7W 10W LED Source Lamp Bead High Power LED COB LED Flashlight Light Bulb Light Lamp Spotlight Down Light Lamps $ 4.41 Product Information: Dimensions: 20*11 (mm) Light-emitting surface size: 11 (mm) Power: 3 (W) Color rendering index: 80 Luminous flux: 1500 (lm) Forward voltage: 3.5 (V) Reverse voltage: 3.5 (V) Electrostatic breakdown voltage (ESD): 12 (V) Rated current: 0.3 (A) Chip size: 20 (mil) Wire material: gold wire Substrate material: copper Beam angle: 120 () Luminous efficiency: 110 (lm/W) Color tolerance: 5 (SDCN) Thermal resistance: 10 (/W) Maximum allowable junction temperature: 60 () Voltage temperature coefficient: 5 (mV/C) 1000 hours regular aging: 100 (%) 6000 hours of conventional aging: 100 (%) Color temperature range: 2700-6500 (K) Packing List: Light-emitting chip*1