Are there any differences between COB LEDs and SMD LEDs?

COB (chip on board) and SMD LEDs differ in several ways, including their light output, quality, and uses:

Light output

COB LEDs are generally brighter than SMD LEDs because they have multiple LED chips mounted on a circuit board, while SMD LEDs only have one. COB LEDs can produce up to three times more light than traditional LED lights.

Light quality

COB LEDs produce a more uniform, high-quality illumination with reflectors and no frosted lenses. This results in a crisp, clear light with no glare that's ideal for rooms with high ceilings. SMD LEDs produce a divergent, point light with glare.

Uses

COB LEDs are better suited for applications that require high brightness and focused lighting, such as spotlights and downlights. SMD LEDs are better for applications that require even illumination over a wider area, such as strips and bulbs. They're also good for task lighting, accent lighting, and creating mood lighting. 

Other differences between COB and SMD LEDs include:

Beam angle: COB LEDs have a large, adjustable beam angle, while SMD LEDs have a narrow beam angle.

Manufacturing costs: COB LEDs have lower labor and manufacturing costs than SMD LEDs.

Lifespan: COB LEDs have a longer life expectancy than traditional SMD LEDs.

Heat sensitivity: SMD LEDs can be more sensitive to heat, which can affect their lifespan and efficiency in high temperatures.