Shenzhen Goldsuno Opto-electronic Techonology Co. Ltd

What's the difference between SMD and COB led downlight?

Jul. 14, 2018

Without getting too scientific, SMD (surface mounted diodes) LED downlights consist of an LED module which is essentially a panel consisting of many small LED chips mounted on the face, acting as a decentralised (spread) light source.

On the contrary, COB (chip on board) LED downlights consist of a larger single LED chip mounted directly on a circuit board (or substrate). It then uses reflectors inside the light to throw the light downwards, acting as more of a central light source in the middle of the downlight.

Do they look different? How can I identify the types?

Yes, you can spot the difference. SMD LED downlights generally have a larger surface area on the face and have a larger frosted cover over the LEDs to diffuse the light, just like the Mercator Optica shown in the image above. COB LED downlights do not have a frosted cover over the LEDs and look more like traditional halogen downlights in their appearance.

What's the difference between SMD and COB led downlight?

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