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In the world of LED lighting, understanding the differences between COB (Chip on Board) and SMD (Surface Mount Device) LED chips is crucial for making informed decisions about which technology best suits your needs. This article will focus on COB LED chips, exploring their design, efficiency, applications, and overall performance, and will briefly contrast them with SMD LED chips.
Understanding COB Light Sources
COB light sources involve directly bonding and packaging chips onto the entire substrate. This means multiple chips are integrated together on the inner substrate for packaging. The LED chip is attached directly to a mirror metal substrate or a ceramic substrate with high reflectivity.
COB, or Chip-on-Board, technology is designed to address the challenge of manufacturing high-wattage LED lights using low-power chips. This technology enhances heat dissipation, improves light efficiency, and reduces glare. COB LEDs boast high luminous flux density, produce less glare, and emit a soft, evenly distributed light.
A key advantage of COB light sources is their simplified production process. They eliminate the need for brackets and bypass steps like electroplating, reflow soldering, and surface mounting, leading to significant cost savings. Generally, COB lights are more cost-effective than SMD light fixtures of the same wattage.
COB light sources are essentially integrated, high-power surface light sources. Their emitting area and shape can be tailored to match the product’s design and structure. In the market, COB LEDs are available in various sizes, typically ranging from 11mm to 60mm, designed for different wattage requirements, often exceeding 3 watts.
Cob chips
Feature of COB LED Chips
Electrical stability is ensured through scientific and reasonable circuit, optical, and heat dissipation designs. The use of advanced heat sink technology guarantees that the LED maintains an industry-leading heat lumen maintenance rate of 95%, resulting in a lifespan exceeding 50,000 hours.
This design facilitates convenient secondary optical matching, enhancing overall lighting quality. COB chips generally have a high color rendering index (RA) of over 90, providing uniform luminescence without spots, and are both healthy and environmentally friendly.
The simplicity of installation and ease of use reduce the complexity of lamp design, cutting down on production processing and subsequent maintenance costs.
What is SMD(Surface Mounted Devices)?
SMD chips
SMD, or Surface Mounted Devices, are a type of component used in Surface Mount Technology (SMT). Each SMD light source typically contains only one or a few chips.
The light emitted by SMD light sources is divergent, and they are often paired with reflectors in LED lamps. Typically, the power of a single SMD light source is low.
SMDs are well-suited for creating high-power products by using large quantities of aluminum substrates.
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