High thermal conductivity aluminum-based PCB circuit board

There are many different substrates for PCB circuit boards. Aluminum-based PCB circuit boards are a kind of metal-based copper-clad laminates. They are usually divided into single-sided boards, double-sided boards and multi-layer boards. Relatively speaking, single-sided boards are the most used, and occasionally used for Double-sided boards can also be used for high-end design products, and multi-layer boards are not used frequently and are relatively rare.

The aluminum substrate has good heat dissipation performance, which can prolong the service life of the product; it has electrical insulation and machining performance, heat dissipation, electromagnetic shielding and high pressure resistance. In addition, compared with the commonly used FR4, the aluminum substrate It can reduce the thermal resistance value to the greatest extent, so that it has extremely high thermal conductivity; it is more suitable for SMT process processing, and the aluminum substrate is not easy to appear the phenomenon of board bending and warping; compared with ceramic PCB board, its mechanical properties are more dominant. .

The aluminum substrates are classified according to the surface process, which can be divided into tin-sprayed plates, anti-oxidation plates, silver-plated plates and immersion gold, etc. The most frequently used surface processes are tin-spraying and anti-oxidation treatment, and the other two are relatively rare and produced The process is also relatively complex.

The most common aluminum substrate products on the market are LED lighting equipment. In addition to LED lighting equipment, aluminum substrates can also be used in a series of audio equipment such as power amplifiers, power supply equipment such as switching regulators, office automation equipment such as drives, power modules, and igniters and other automotive equipment.