SMD, COB and CSP are the three forms of LED strip, SMD is the most traditional, in order to meet the diversified needs of customers, from 5050 beads to today’s CSP technology is increasingly updated,and there are all kinds of products on the market, how to choose among the products?

At present, SMD and COB are widely used, each has its own advantages and disadvantages and different application scenarios. SMD is the most common, a variety of sizes to choose from; COB is favored by the market with superior linearity; and the birth of a new light strip CSP, due to more advanced chip packaging technology and lead the industry’s new fashion. So what is the superiority of CSP strip compared with traditional strip COB and SMD strip?

CSP’s leading-edge packaging process

LED chip, also known as LED light-emitting chip, is the core component of the LED soft strip, will directly affect the light quality of the LED soft strip. And how to break the packaging chip technology difficulties, is the major manufacturers strive to break through the technical barriers.

COB and CSP used by the traditional packaging technology, the structure is complex, time-consuming and labor-intensive, the production cost is high. The illumination of the finished LED will be reduced due to heat deterioration of the packaging material and other reasons for blocking, poor heat dissipation, and poor product stability.

After technical refinement, CSP chip adopts “flip chip and chip-level technology”, with low thermal resistance and high electrical stability. Its size is getting smaller and smaller, and its performance is more stable.

The cost of CSP packaging is much lower than the cost of traditional packaging technology, which can save labor cost and packaging cost to the greatest extent, and is more cost-effective.

Highly accurate light color

The traditional COB adopts the dot powder process, the light mixing color is not pure, the color is not easy to control when mixing light, and good color consistency can only be achieved by sacrificing the yield rate.

CSP lamp beads are arranged more densely, the light is divided before packaging, the luminous angle is larger, the light color accuracy of CSP is higher, in the light mixing color consistency, CSP compared to the traditional COB, the advantages are also more obvious.

Super Flexibility

COB and SMD are generally flexible, and if not operated properly, COB will come off the package, and SMD may break the holder of the lamp beads.

CSP, on the other hand, is safe and reliable because there are no fragile links such as brackets and gold wires, and the lamp beads are protected by drip adhesive. The chip volume is smaller, can do more light and thin, bending force angle is small, with stronger flexibility.

Three product application scenario suggestions

Based on the respective superiority of the 3 products, a more detailed division of their use scenarios was made.

SMD strip is more widely used because of its various sizes available, more suitable for indoor outline, waterproof models can also be used for outdoor outline.

COB strip with excellent linear effect, applied to decorative lighting and props display lighting effect is better.

CSP strip has a certain linear effect and the best flexibility and bendability. And in the package before splitting light, yield and light color accuracy is better than the previous two types of strip, relatively speaking, the most cost-effective.

Therefore, from a comprehensive point of view, it has certain advantages in various indoor and outdoor applications. And its compact size, for narrow space applications more obvious advantages.