Part 4: COB LED vs SMD LED vs DOB LED
What are the differences between COB, SMD, DOB LEDs?
First, COB LED and SMD LED are two LED chip assembly technology, while COB LED is an LED PCB design solution.
Second, COB LEDs are integrated and bonded on the PCB board; SMD LEDs are scattered and surface-mounted on the PCB board; COB LEDs are not integrated, and the power source is AC utility power.
Third, COB LEDs have higher power than COB LEDs and SMD LEDs.
Four, COB LEDs have no halo, and their light shattering is even; SMD LEDs have haloes and uneven lighting; DOB LEDs lighting is not as even as COB LEDs, but better than SMD LEDs.
Five, usually, SMD LEDs are the cheapest among the three LED products, and DOB LEDs are more expensive than COB LED PCBs.