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28*28mm LED COB Chip on board Lighting Source 20W 30V DC for diy outdoors indoor Downlight bulb Rail Lighting Ceiling LampItem Description:Sumbulbs 2828-23 20W COB LED Chip On Board1. COB for LED bulbs (SBS-2828)2. Diameter: 28x28mm3. Lighting diameter: 23mm4. Power: 20W5. Rated current(DC): 600mA6. Rated Voltage(DC): 29-33V7. Color temperature(CCT) : Warm white: 2900-3100K Natural white: 4000-4400K Cold white: 6000-6500K8. Luminous efficacy: more than 100LM/W9. Application: LED Spotlight, Car lights, Ceiling lights, Down light, DIY LED lamp,Outdoor Indoor Rail Lighting10. Note : Please use a necessary heatsink to maintain the temperature under 80 levels Celsius . If it&;s above eighty degrees Celsius, its life would be greatly reduced. 11. How to compare the drive: We put forward use fixed current driver, If use constant voltage driver, please care the MAX current. Product Picture:
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28x28mm LED COB Chip on Board Lighting Source 20W 30V DC for DIY Outdoor Indoor Downlight Bulb Rail Ceiling Lamp
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