SMD light

What Is The Difference Between SMD And COB LED Lights?

LED lights are constantly improved to bring about better use, greater versatility and more efficient use of power. The different models of LED lights are highly popular compared to traditional incandescent lights, mainly because they can last for about 25 times longer with less energy use.

LED lights come in a variety of models. Start comparing COB vs SMD LED Lights, or before you look at the difference between LED light COB and SMD.

You can choose between SMD vs COB types, for example, depending on your needs for energy efficiency and versatility. The COB vs SMD LED Lights differ in terms of their features and semiconductors.

SMD vs COB: What is SMD?

SMD, or “Surface Mounted Device” LEDs, are the most common LEDs in the market. The LED chip is permanently fused to a printed circuit board, and it’s highly popular due to its versatility. You can find it in light bulbs and string lights, and even in the notification light on your mobile phone.

cob light

SMD-LED What is COB led? What is an SMD led?

The SMD LED chips come in a variety of sizes. SMD LED can accommodate chips with complicated designs, like the SMD 5050, which is 5mm wide. The SMD 3528, on the other hand, are 3.5mm wide. The SMD chips are small, almost close to the design of the flat, square computer chip.

SMD vs COB: What is COB?

One of the most recent developments in LED, COB or “Chip on Board” technology is a step forward more efficient energy use.Like the SMD, COP chips also have multiple diodes on the same surface. But the difference between LED light COB and SMD is that COB LEDs have more diodes.

COB-Led What is COB led? What is an SMD led?

COB chips typically have 9 or more diodes. COB chips also only have 1 circuit and 2 contacts, regardless of the number of the diodes. This simple circuit design is the reason for the panel-like appearance of COB LED light (SMD light, on the other hand, appears like a collection of smaller lights).

But unlike SMD, COB LED lights can’t be used to create colour changing bulbs or lights. This is because there are only 2 contacts and 1 circuit. Multiple channels for adjustment are required to create the colour changing effect. Because of this, COB LED lights are efficient in single-color applications, but not in more versatile technology.

Another aspect of the COB vs SMD LED Lights difference is in the use of energy. COB is known for better lumen-per-watt ratios and heat efficiency. This has a lot to do with the design of COB LEDs, and the cooling ceramic substrate of the chips.

COB vs SMD LED chip

Difference between SMD and COB LED lights

SMD (SMD) light source has a large illumination angle of up to 120 & Phi; 160 degrees, high assembly density, small size and light weight of electronic products, and the size and weight of the patch components are only about 1/10 of that of conventional plug-in components.

After SMT, the volume of electronic products is reduced by 40% & Phi; 60%, weight loss 60% & Phi; 80%. In addition, it has high reliability and strong anti-vibration capability. Low solder joint defect rate; high frequency characteristics, reducing electromagnetic and radio frequency interference; easy to achieve automation, improve production efficiency, reduce costs by 30% & Phi; 50%, saving materials, energy, equipment, manpower, time and so on.

The COB (integrated) packaging technology, that is, the chip-on-board package, is one of the bare chip mounting technologies. The LED chip is placed on the printed circuit board, and the electrical connection between the chip and the substrate is realized by a wire stitching method, and is covered with a resin to ensure reliability. The COB light source module is a high-power integrated light source. The circuit can be designed according to customer requirements, and the heat dissipation is more reasonable, which can effectively avoid the disadvantages such as spot light and glare of the discrete light source device combination.


Less glare, it is also possible to effectively improve the color rendering of the light source by adding a suitable combination of red chips without significantly reducing the efficiency and lifetime of the light source. The viewing angle is large and easy to adjust, reducing the loss of light refraction. The light is more uniform and easy to install.

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