Thermal management is crucial in high-power LED lighting equipment. Aluminum substrates are commonly used as thermal conductive substrates to transfer the heat generated by LED chips to the heat sink. However, due to the small gap between the aluminum substrate and the heat sink, the air thermal resistance is high. If not properly filled, it will seriously affect the heat dissipation efficiency and shorten the life of the LED.
Challenges and Needs
Customers face the following challenges when using traditional thermal conductive materials:
The material is prone to drying and cracking or oil separation at high temperatures, and has poor long-term stability
Insufficient thermal conductivity, high thermal resistance, LED is prone to overheating
Poor adhesion performance, unable to stably adhere to metal surfaces
The usage environment is complex and requires high and low temperature resistance, oxidation resistance, and moisture resistance
Solution
We recommend using SIGR 2225 thermal conductive silicone grease, specifically designed for high-performance electronic heat dissipation:
💡 Thermal conductivity up to 2.5W/m · K, significantly reducing thermal resistance
🔥 High temperature does not dry and oil does not separate, ensuring long-term stable operation
💧 Excellent water resistance and oxidation resistance, suitable for complex environments
📐 Low volatility and low oil separation, eliminating pollution and performance degradation
🔌 Excellent dielectric and anti corona performance to ensure electrical safety
⚙️ Good adhesion, suitable for various materials such as metal, ceramic, rubber, etc
After the customer adopted SIGR 2225, the total thermal resistance of the system decreased by more than 30%, the operating temperature of the LED significantly decreased, and the stability and lifespan were greatly improved, achieving a win-win situation of efficient thermal conductivity and long-term reliability!
Tags: LED thermal management · LED thermal management | Gap filling between aluminum substrate and heat sink · SIGR 2225 · Thermal conductive silicone grease
