What are the differences between COB and SMD LED ...

COB light source means that the chip is directly bonded and packaged on the entire substrate, that is, N chips are integrated together on the inner substrate for packaging, and the LED chip is directly attached to the mirror metal substrate or ceramic substrate with high reflectivity.

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COB, or Chip-on-Board, technology is primarily used to address the challenge of manufacturing high-wattage LED lights with low-power chips. This technology helps in dissipating the heat generated by the LED chip, improving light efficiency, and reducing the glare. COB LEDs have a high luminous flux density, produce less glare, and emit a soft, evenly distributed light.

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One notable advantage of COB light sources is their simplified production process. They eliminate the need for brackets and do away with processes like electroplating, reflow soldering, and surface mounting, leading to cost savings. When comparing lights with the same wattage, COB lights generally come at a lower cost compared to SMD light fixtures.

COB light sources can be thought of as integrated, high-power surface light sources. Their emitting area and shape can be designed to match the product&#;s shape and structure. In the market, COB LEDs are available in various sizes, typically ranging from 11mm to 60mm, designed for different wattage requirements, usually exceeding 3 watts.

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