Chip-on-Board (COB) LEDs are high-power white LED arrays. They are sometimes nicknamed “fried eggs” (when they are not lit) because of their yellow phosphor circle on a white board. 

Specifications:

   LED COB

• Emitting Colours: Warm White (3000K), Natural White (4000K), Cold White (6500K)
• Power: 3W
• Voltage: 9V-11V
• Current: 240mA-260mA
• Lumen: 100LM/W
• Size: 13x13mm
• Luminous Surface: Φ 11mm