High-power LED heat dissipation recommends these two heat-conducting materials-LED lighting-ShenZhen Revve New Material Tech Co.,Ltd.

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High-power LED heat dissipation recommends these two heat-conducting materials

Source : LED lighting Edit : Revve New Material Read : 53 Time : 2023-05-06

With the development of LED in the direction of high power, in the LED industry, the proportion of high-brightness LED market scale continues to increase. LEDs have largely replaced traditional light sources in indoor and outdoor low-power application scenarios due to their effectiveness, energy saving, environmental protection, fast response, and adjustable spectrum. However, the replacement rate of LED lamps with high power density, such as high pole lamps and stadium lamps, is still relatively low. The main reason restricting its widespread use is due to the heat dissipation and heat resistance of LED materials.

Therefore, when LEDs are developed towards high power, this trend leads to more heat generation in a limited volume. Semiconductor components are usually very sensitive to heat. Prolonged heating or excessive heat will bring about problems in their stability and service life. The LED will generate a lot of heat while emitting light, if the heat generated is not dissipated in time, the LED chip will quickly age and burn.

At this stage, the heat dissipation bottleneck of the entire LED lighting system is concentrated in the heat dissipation of the interface between the LED device, the heat-conducting aluminum substrate, and the system circuit board. The thermal interface material with excellent performance can keep the heat dissipation channel of the LED unblocked, thereby ensuring the normal light emission and service life of the LED. The thermally conductive silicone sheet helps LED lighting manufacturers to more quickly and accurately coat the thickness-controllable thermally conductive organosilicon compound on substrates with complex shapes, while also ensuring excellent thermal conductivity and reducing production costs.

Product features of Ruiwei New Material Thermal Conductive Silicone Sheet:

1. Good thermal conductivity: 1.2~25.0W/mK;

2. Fire rating: UL94V0;

3. Provide a variety of thickness and hardness options: 0.5mm-5.0mm;

4. With self-adhesive without additional surface adhesive;

5. High compressibility, soft and elastic, suitable for low pressure applications.

睿玮硅胶片

About 20% of the input electric energy of high-power LED products is converted into light energy, and the remaining 80% is converted into heat energy. If a large amount of heat cannot be exported smoothly, the junction temperature of the LED chip will be too high. The heat dissipation is the main problem to be solved by LEDs, and the heat conduction process before this is even more critical. Because the LED chip will generate a lot of heat when it is working, if it cannot be dissipated quickly, the LED chip with too high junction temperature will further affect the service life, luminous efficiency and reliability of the product. At present, there are very good and effective methods to improve the heat dissipation capacity of LEDs. We can coat a layer of thermal conductive silicone grease between the LED aluminum substrate and the aluminum heat sink to reduce the thermal resistance of the contact surface between them, thereby improving its own cooling capacity.

Product features of Ruiwei New Material Thermal Conductive Silicone Grease:

1. Low thermal resistance;

2. Good thermal conductivity: 1.0~5.6W/mK;

3. Excellent long-term stability to completely fill the contact surface.

导热材料

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Application

Smart Security 5G Communication Medical equipment 3C electronics New Energy Vehicle LED lighting