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Influence of aluminum base plate on LED radiator
Oct 12, 2018

Influence of aluminum base plate on LED radiator


As you know, the normal operation of LED has a proper temperature condition. If the temperature is beyond this temperature, the performance of LED will be affected. If the temperature is not controlled well, LED's long life will be lost.

How to get the heat out of the LED chipThis is the packaging process to do, many of the practices in the LED packaging at the bottom of the metal materials, a step closer to heat conduction.The heat generated by the LED chip is quickly exported using the aluminum substrate.Is the heat transfer performance of all aluminum substrates the same?Is it all the same? Can the heat generated by LED be exported quickly?What is the effect on the heat transfer of the aluminum substrate?Does the aluminum plate determine the thermal conductivity of the aluminum substrate?

On the question to make a brief introduction: aluminum substrate of the thermal conductivity of positive tell everyone different!Heat conduction is also different.This is affected by the aluminum substrate structure.The aluminum substrate is divided into three layers: one layer is copper, the second layer is thermal insulation materials, and the third layer is aluminum.So the functions of these three layers are;The first layer is used for electrical circuits.The second layer is the key to whether or not the heat generated by the LED can be transmitted to the aluminum plate rapidly, which is to know the thermal resistance of this thermal insulation material.The third layer is used to transfer heat from the insulation to the lamp cup.There is also a function of installation.So you know very well how to get the heat out of the cup, because you know very well about the heat out of the cup.I don't care much about the aluminum substrate, and I don't know much about it.Some people think that the aluminum substrate better thermal conductivity is related to the thickness of aluminum plate.That's not the case.To improve the thermal conductivity of aluminum substrate, the key is to improve the performance of thermal insulation materials.The thermal resistance of thermal insulation material should be reduced.And to reduce the thermal resistance of insulation materials is not a simple matter, he is affected by the material composition, the manufacturing process.

At present, more aluminum substrate is circulated in the market. The process is to apply a layer of glue on the fiber cloth.So if you have an aluminum substrate like this, it's going to have a thermal resistance of 1.7 degrees Celsius per W, or 3.2 degrees Celsius per W.The thermal resistance is high, so it's not very good.Heat transfer is also uneven.Not suitable for high quality, high brightness, high power LED lamps.And to see that this is a very simple material, you look at the light and you see the grid pattern on the surface of the aluminum substrate.

With the continuous development of LED chips, the power is continuously improved, and the heat dissipation is also higher and higher, so the aluminum substrate is also constantly developing.At present, the thermal insulation material of aluminum substrate can be made into fully adhesive, no need for fiber cloth, through the dust-free workshop and uniform compression of high precision.Since it is all gum product also can not see plaid.Can be compared with the United States, Japan's all - plastic aluminum substrate.And have very big price advantage.Of course it's a little more expensive than the ordinary one.


  • Contact Us

    Henan Signi Aluminum Co.,Ltd

    Addresss:No.89 Science Avenue, National HI-Tech Industry Development Zone, Zhengzhou, Henan

    Postal Code:450001.

    Tel: +86-371- 55689814, +86-371-55686476

    Mob: +86 13673369503

    Sales manager: Alex Lu

    Fax:+86-371-55686475

    E-mail: inquiry@signialuminium.com

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