COB Strip

COB strip refers to a type of LED (light-emitting diode) lighting technology known as Chip-on-Board (COB). COB technology involves mounting several LED chips directly onto a single circuit board or substrate, which is then encapsulated in a protective material. This arrangement allows for higher LED density and improved thermal management.

COB strips are characterized by their compact size and high brightness output. The closely packed LED chips on the circuit board create a continuous strip of light when powered on. Due to the higher LED density, COB strips can produce a more uniform and intense illumination compared to traditional LED strips that use individual LEDs spaced apart.

One of the main advantages of COB strip lighting is its ability to provide a powerful and focused light source in a small form factor. The concentrated LED array enhances optical efficiency and offers better control over the direction and distribution of light. This makes COB strips suitable for applications such as architectural lighting, accent lighting, display lighting, and general indoor and outdoor illumination.

Furthermore, COB strips often feature good color rendering properties, allowing them to accurately reproduce colors and objects with high fidelity. They are also energy-efficient, offering substantial energy savings compared to traditional lighting technologies.


1、Which is better SMD or COB?

The choice between SMD (Surface Mount Device) and COB (Chip-on-Board) technology depends on the specific requirements of your lighting application. Both SMD and COB have their advantages and considerations to keep in mind:


Flexibility: SMD LEDs are available in various sizes, including small form factors like 5050 or 2835, making them suitable for applications where space is limited.
Wide Beam Angle: SMD LEDs typically have a wider beam angle, making them suitable for applications that require broader illumination coverage.
Cost-effective: SMD technology has been widely adopted and mass-produced, resulting in competitive pricing.
Individual Control: Each SMD LED on a strip or module can be individually controlled, allowing for dynamic color-changing effects and patterns.

High Brightness: COB technology enables higher LED density on a single chip, resulting in brighter output from a smaller area.
Uniform Lighting: COB LEDs produce a more uniform light distribution due to the closely packed LED chips, making them suitable for applications requiring even illumination.
Better Thermal Management: The COB design allows for efficient heat dissipation, which can lead to improved lifespan and reliability.
Compact Size: COB technology allows for a compact form factor, enabling space-saving designs in certain applications.

2、What is the difference between SMD strip and cob strip?

SMD (Surface Mount Device) strip and COB (Chip-on-Board) strip are two different types of LED strips commonly used for lighting applications. Here are the main differences between them:

Construction: SMD strip consists of individual surface-mounted LEDs mounted on a flexible circuit board, usually in a row or grid pattern. Each LED is separate and visible as individual units. On the other hand, COB strip comprises a single circuit board with multiple LED chips directly mounted onto it, forming a continuous array of light sources. The LED chips are closely packed together without noticeable gaps.

Light Output: COB technology allows for a higher density of LEDs per unit area, resulting in a higher lumen output compared to SMD strips. COB strips can produce brighter and more uniform illumination due to the concentrated arrangement of LED chips.

Beam Angle: SMD strips typically have a wider beam angle because each LED is an individual light source. The light emitted from SMD strips tends to disperse more widely. In contrast, COB strips often have a narrower beam angle since the entire array of LEDs emits light collectively. This makes COB strips suitable for applications where focused illumination is desired.

Heat Dissipation: Due to their construction, COB strips generally generate more heat than SMD strips. The close proximity of LED chips on the COB strip results in greater heat concentration. Adequate heat dissipation measures such as heat sinks or passive cooling systems are usually required for COB strips to prevent overheating and maintain optimal performance. SMD strips, being more spaced out, tend to dissipate heat more effectively.

Flexibility: SMD strips are typically more flexible than COB strips because they consist of individual LEDs mounted on a flexible circuit board. This allows for easier bending around corners, irregular shapes, or curved surfaces. COB strips, with their compact design and rigid circuit board, are generally less flexible and more suitable for straight-line installations.

Cost: In general, SMD strips tend to be more affordable compared to COB strips. The manufacturing process for SMD strips is well-established and widely used, resulting in larger production volumes and lower costs. COB technology, being relatively newer and involving more complex manufacturing techniques, tends to be more expensive.

It’s important to note that both SMD and COB LED strips have their advantages and applications. The choice between them depends on specific lighting requirements, budget, desired aesthetics, and installation constraints.

3、What is COB in LED strip types?

COB stands for Chip-on-Board. In the context of LED strips, COB refers to a type of LED packaging technology.

In traditional LED packages, such as SMD (Surface Mount Device), individual LED chips are mounted onto a circuit board or substrate with separate electrical connections for each LED. However, in COB technology, multiple LED chips are directly mounted onto a single circuit board, forming a closely packed array of light sources.

With COB technology, the LED chips are typically closely spaced and bonded directly to the circuit board’s surface without visible gaps. This design allows for a higher LED density per unit area compared to traditional LED packages. The close proximity of the LED chips results in improved light uniformity and increased lumen output.

COB LED strips offer advantages such as:

Higher Lumen Output: The concentrated arrangement of LED chips enables COB LED strips to produce brighter light compared to traditional LED packages.

Improved Color Mixing: The close grouping of LED chips in COB technology facilitates better color mixing, leading to more uniform and consistent lighting.

Enhanced Thermal Management: The close integration of LED chips on the circuit board improves heat dissipation, reducing the risk of overheating and ensuring optimal performance.

Compact Design: COB LED strips have a compact form factor due to the direct mounting of LED chips on the circuit board, making them suitable for applications where space is limited.

COB LED strips are commonly used in various lighting applications, including architectural lighting, accent lighting, task lighting, and commercial lighting, where high brightness and uniform illumination are desired.