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The Ultimate Guide To SMD LED Development Trend And Its Application


The technology behind LED lighting is currently undergoing a period of rapid development, and the luminous efficiency is continuing to advance. Every two years, the amount of luminous flux that can be produced by a single LED package device is increased by a factor of two. Since the 1980s, there has been a gradual increase in the promotion of the use of surface - mounted devices in the production of LEDs. When it comes to illumination, the high power SMD LED that was produced subsequently is what is utilised for automobile panel lighting, brake lights, and has even been extended to regular lighting equipment.

SMD LED market status

When seen from a worldwide perspective, the packaging production in Chinese Taiwan accounts for sixty percent of the world's share. The production and marketing aspects of the industry chain are steady, particularly with regard to the packaging sector, and there is a clear division of labour between the upstream, middle, and downstream businesses. When production is moved to the mainland, the cost of production will decrease, allowing it to compete better with other countries. It is anticipated that within the next five to ten years, the Yangtze River Delta, the Pearl River Delta, Fujian, and other places will become the global centres for the production of UV LED packaging.

The Ultimate Guide To SMD LED Development Trend And Its Application 1

The local SMD LED market has been relatively stable recently from the point of view of the Chinese mainland market.

Characteristics of the encapsulation used in SMD LEDs

The phosphor and epoxy resin are first configured to make a mould for the SMD LED, which is the first step in the encapsulation process. Next, the epoxy resin and phosphor powder are combined to make a glue cake, which is then adhered to the chip. Finally, the remaining space around the chip is filled with epoxy resin to create an SMD packaged LED.

Nowadays, the more typical SMD LED on the market is packaged with three LED chips, and six pins are extended, which are connected to the surface of the PCB circuit board. This LED has an external size of 50mm x 50mm. It is directly bonded to the surface of the heat sink using thermally conductive adhesive, which results in significant improvements in heat dissipation, dependability, and a reduction in the rate at which light decays. Substrates made of metal-ceramic composites with good thermal conductivity are typically what are utilised for high-power LEDs. These are the primary characteristics:

(1) A high level of thermal conductivity and a low thermal resistance;

(2) Compatibility of the coefficient of thermal expansion (TCE: 6.2);

(3) Anti-ultraviolet;

(4) Resistance Corrosion, as well as the absence of yellowing;

(5) Adhere to the criteria set by ROHS;

(6) Ability to withstand high temperatures.

The Ultimate Guide To SMD LED Development Trend And Its Application 2

The thermal resistance of the LED encapsulation has a significant impact on the lifespan of the LED chip, particularly with regard to the LED chip that is subjected to high current. The structure of the packaging bracket determines the cost and heat dissipation performance of LED encapsulation products, and the structure of the packaging bracket is evolving in the direction of small size, thin thickness, and good heat dissipation. This is important because the cost of LED encapsulation products is directly proportional to the heat dissipation performance of the product.

When packaging additional LED chips into a single SMD LED, the issue of heat dissipation is something that must be taken into consideration. The ultra-low thermal resistance offered by high-power SMD LEDs whose substrates are made of high thermal conductivity metal-ceramic composites is the most significant benefit offered by these lights. Because of its compact size and relatively thin profile, the ultra-low thermal resistance and high-power LED chip package is better suited for use in applications that have limited available space. Numerous applications can significantly profit from utilising this functionality.

A Contrast Between SMD LEDs and DIP LEDs

The surface-mount device (SMD) LED is affixed to the top of the circuit board, making it appropriate for surface-mount technology (SMT) processing as well as reflow soldering. LEDs with surface-mount diodes (SMD) offer improvements in terms of brightness, viewing angle, flatness, dependability, and consistency. Its excellent vibration resistance, low solder joint fault rate, and superior high-frequency characteristics are some of its advantages when compared to those of other packaged devices.

The in-line LED utilises potting as its packaging material. The first step in the potting process is to inject liquid epoxy resin into the cavity of the LED mould, followed by the insertion of the pressure-welded LED bracket. After that, the assembly is placed in an oven to cure the epoxy resin, and finally, the LED is formed after being removed from the mould cavity. Its strong market share can be attributed to both the straightforward manufacturing method and the competitive pricing.

Because of the rapid expansion of economies all over the world, there is currently an urgent need to find a solution to the worldwide problem of insufficient energy supplies. The consumption of light is approximately twenty percent of the overall electricity consumption. One of the most essential things that can be done to save energy is to lower the amount of power that is used for lighting. The transition away from conventional light sources is being sped up by the use of energy-efficient LED lamps, which serve as a replacement for conventional incandescent lighting.

The Ultimate Guide To SMD LED Development Trend And Its Application 3

Where to buy SED LED from?

Zhuhai Tianhui Electronic Co., Ltd., one of the uv led manufacturers, specializes in UV LED air purification, UV LED water sterilization, UV LED printing and curing, uv led diode, uv led module, and other goods. It has a skilled Research and innovation and sales staff to offer consumers UV LED Solutions, and its goods have also won the praise of a large number of customers. With a complete production run, consistent quality and dependability, as well as affordable costs, Tianhui Electronics has already been working in the UV LED package market. From short to long wavelengths, the goods include UVA, UVB, and UVC, with full UV LED specs ranging from low to high power.

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