What is the difference between aluminum and copper substrate for led lights?

With the extensive research and application of LED lights, more and more people begin to pay attention to the performance and quality of LED lights. Among them, the substrate material of LED lights is one of the important influencing factor issues that determine its performance and life.cnc aluminum parts Aluminum substrate and copper substrate are two relatively common LED lamp substrate materials. So, what is the way difference between them?

1. Material cost

The cost of copper substrates is higher than aluminum substrates because copper has better electrical properties and thermal conductivity, so it requires more raw materials to produce. In contrast, aluminum substrates cost relatively less, but they also have relatively lower thermal and electrical conductivity.aluminum t profile

2. Thermal Conductivity

LED lights need to have good thermal performance, because high temperatures will affect their performance and life. Copper substrates have better thermal conductivity than aluminum substrates, so they are usually used in LED light designs with higher power requirements.led panel aluminum frame Aluminum substrate thermal conductivity is relatively poor, but for the design of low-power LED lights has been sufficient.

3. Conductivity

The conductivity of copper is much better than aluminum, so it is often used in LED designs that require higher frequencies, because it is better at transmitting high-frequency signals. Aluminum substrates have relatively poor conductivity, but it is sufficient for low-frequency LED light designs.

4. Corrosion Resistance

Copper substrates corrode when corroded by acids, so proper protection is needed. When the aluminum substrate is corroded by moisture, it will produce a layer of oxide, which can protect the aluminum substrate from corrosion.

Overall, the differences between aluminum and copper substrate materials mainly lie in having thermal conductivity, electrical conductivity, corrosion resistance and cost. Choose which kind of substrate should fully consider the power requirements of the LED lights, frequency requirements and requirements for heat dissipation. When the need for higher some power and high frequency, how should choose copper substrate; when the need for low power and low frequency, you can choose their own aluminum substrate. However, we should note that the use of any substrate requires proper heat dissipation design to ensure the performance and life of the LED lights.