04 · LED architecture

COB vs SMD

The two constructions look similar on a reel and behave completely differently once installed. The choice is usually decided by whether the strip will be seen.

COB

Dot-free continuous light

·Hundreds of micro-LEDs on a phosphor strip
·No visible hot spots, even up close
·Ideal for shadow gaps and shallow channels
·Higher density, higher lumen output per foot

SMD

Discrete, high-performance chips

·Individual LED packages (2835, 3528, 5050)
·Easier to achieve very high CRI / R9
·Best when diffused behind a frosted lens
·Required for RGB, RGBW and addressable

See COB strips →

Questions on this topic

What is the difference between COB and SMD LED strip?

COB strip carries hundreds of micro-LEDs under a continuous phosphor layer, so it emits an unbroken line of light with no visible dots even when viewed directly or in a shallow channel. SMD strip uses discrete LED packages, which leaves a dotted appearance unless it sits behind a frosted diffuser at sufficient depth. Choose COB for exposed coves, shadow gaps, and handrails; choose SMD for RGB, RGBW, addressable effects, and very high R9 output.