What is SMD / COB/ SOB :
SMD LED Strip Light: Single packaged LED + PCB board
COB LED Strip Light : Multiple bare chips+ PCB board+Silicone
Chip-on-board LED strip, multiple bare chips are directly attached to PCB board and packaged into an integrated lighting surface without single lamp bead feeling
SOB LED Strip Light: Packaging chips+ PCB board+Silicone
Key Performance Differences:
| Items | SMD LED Strip Light | COB LED Strip Light | SOB LED Strip Light |
| Lighting Effect | Obvious lamp beads, easy to have light spots; general uniformity | No lamp beads, uniform lighting surface, no spots/shadows; soft light | No obvious lamp beads, zoned uniform lighting, balance softness and layering |
| Brightness | Moderate brightness, low single power, need multiple chips | High brightness, dense chips, higher brightness per unit area than SMD | High brightness, zoned layout, better brightness stability |
| Performance | Good single chip heat dissipation, general overall heat dissipation, heating easily in dense layout | Dense chips, poor overall heat dissipation, need high-quality PCB | Zoned packaging, better heat dissipation than COB, more stable than SMD |
| CRI | Normal CRI≥80/90, high CRI up to CRI≥95 | Generally CRI≥80/90, high color rendering, accurate color restoration | CRI≥80/90, balanced color rendering, suitable for multiple scenes |
As core products of flexible LED lighting, SMD, COB and SOB LED Strip Lights differ in chip packaging, lighting effect and heat dissipation. SMD is cost-effective for basic needs, COB excels in uniform no-spot light for premium scenes, SOB balances stability and brightness for engineering projects. Choose the right one based on your lighting scenarios and quality requirements.
