What are the characteristics of PCB aluminum substrate?

Aluminum-based PCBs, as a special type within the PCB family, have found widespread applications in various industries such as communications, power, power supplies, LED lighting, and especially in high-power electronic devices. The popularity of aluminum-based PCBs can be attributed to several key characteristics:

Excellent Heat Dissipation: Renowned for its superior heat dissipation performance, aluminum-based PCBs are crucial for high-power electronic devices. Aluminum exhibits a high thermal conductivity and a low heat capacity compared to other metals and alloys. This property enables aluminum-based PCBs to efficiently conduct and disperse the heat generated by electronic components, thereby enhancing device reliability, stability, and overall lifespan.

High Processability: Aluminum, being relatively soft compared to other metal materials, boasts high malleability. This characteristic allows it to be processed into various shapes, meeting diverse design requirements for different PCBs.

Outstanding Corrosion Resistance: When exposed to the atmosphere, aluminum naturally forms an oxide film on its surface, providing a degree of protection. This oxide film contributes to the inherent corrosion resistance of aluminum-based PCBs. However, in environments with high alkalinity or acidity, additional surface treatment processes are typically employed during production to further enhance the corrosion resistance of aluminum-based PCBs. Treated aluminum-based PCBs can operate stably in more demanding and corrosive environments.