What are the differences between COB and SMD used in Led wall lamps?

COB (Chip on Board) and SMD (Surface Mount Device) are two commonly used packaging technologies in LED lighting, and their applications in LED wall lamps each have different characteristics.

• Encapsulation method

COB: COB technology directly installs multiple LED chips on the same substrate, which can increase the density of the light source and generate higher brightness. COB is typically suitable for applications that require high luminous flux and large light output.

SMD: SMD involves directly installing a single LED chip on a surface mount circuit board. Its installation method is relatively more flexible and suitable for most common lighting needs.

• Brightness and luminous efficacy

COB: Due to multiple LED chips being concentrated together, COB lamps have a stronger light output and are suitable for environments that require higher brightness.

SMD: The brightness of a single LED chip is relatively low, so more leds are needed to achieve the same brightness. It is usually used in general lighting scenarios.

• Heat dissipation performance

COB: Due to multiple LED chips being concentrated together, COB has relatively better heat dissipation performance, especially in high-power applications where heat dissipation design is particularly important.

SMD: SMD leds are relatively dispersed and have weak heat dissipation capabilities. Therefore, better heat dissipation measures may be required in high-power applications.

• Size and flexibility

COB: The size of COB LED beads is relatively large and it is not easy to make them very small. They are suitable for high-power and high-brightness lighting applications.

SMD: SMD LED beads are small in size and suitable for being made more compact, thus offering greater flexibility. They are widely used in small or low-power LED lighting.

• Cost

COB: Due to its relatively complex technology, the production cost of COB is relatively high and it is usually suitable for high-end or high-power products.

SMD: Its production process is relatively simple and the cost is low, so it is more commonly used in mid-to-low-end market applications.

• Application scenarios

COB: It is suitable for occasions that require high brightness and wide-range lighting, such as stage lighting, billboard lighting, projectors, etc.

SMD: Widely used in ordinary home lighting, shopping malls, offices and other environments, it is suitable for general lighting needs.

• Conclusion

COB is more suitable for high-brightness and high-power lighting, especially in situations where concentrated light sources and good heat dissipation are required.

SMD is more suitable for ordinary, lower-power lighting requirements, and it has a smaller size and more flexible applications.

Choose the appropriate LED type based on your needs. If you require high brightness and wide-range lighting, COB might be a better choice. If the requirements are relatively simple, SMD is sufficient for use.