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Advantages of SMD and COB LED

Jun. 10, 2021

LED lights to continue to improve for better use, greater versatility, and more efficient use of electricity. Compared to traditional incandescent lamps, different types of LED lights are popular, mainly because they can last about 25 times longer but use less energy.

LED lamps are available in a variety of models. Start comparing COB vs. SMD LED lights, or before you look at the differences between COB and SMD LED lights. For example, you can choose between SMD and COB types, depending on your needs for energy efficiency and versatility.



Advantages of COB and SMD


Low production failure rate. Produce more lumens with less energy. Better heat transfer. Therefore, shorter chip distance and space-saving.

Circuits can be designed according to customer requirements, heat dissipation is more practical, and can effectively avoid the shortcomings of discrete light source device combinations such as spotlighting and glare. If you want to get more information about the wholesale best COB LED lights price, welcome to contact us.



High reliability and high resistance to vibration. Low defective solder joint rate and improved production efficiency. SMD more flexible, its chip display is based on the layout of the printed circuit board decision, can be changed to meet different engineering solutions.


SMD light source has a larger irradiation angle, up to 120 ° Phi; 160 degrees, small size of electronic products, lightweight, high assembly density, the size and weight of the cover components is only about 1/10 of conventional plug-in components.


The difference between SMD and COB LED lights


COB is known for its better lumen per watt ratio and thermal efficiency.COB chips can produce higher lumens with less energy, as low as 80 lumens per watt. You can find it in all types of bulbs and applications, such as flash for cell phones or dumb cameras.


COB chips typically have 9 or more diodes. And, COB chips also have 1 circuit and 2 contacts, independent of the number of diodes. This simple circuit design is the reason why COB LED lamps appear panel-like, while on the other hand, SMD lamps look like a set of smaller lamps.

However, COB LED lights cannot be used to produce color-changing bulbs or lamps because there are only two contacts and 1 circuit. Multiple channel adjustments are required to create color-changing effects. Therefore, COB LED lights are effective in monochrome applications, but not in general-purpose technology.



SMD chips are known for their brightness, producing 50 to 100 lumens per watt. SMD LED chips can have up to three diodes on a single chip, each with a separate circuit. Each circuit has a cathode and an anode, resulting in 2, 4, or 6 contacts in the chip.

This alignment is what makes SMD chips more versatile than COBs. The chip can contain red, green, and blue diodes. By using these three diodes, you can create any color by simply adjusting the output level.