What is the difference between pcb proofing aluminum substrate and copper substrate?

With the continuous development and progress of electronic product technology, electronic products are gradually developing towards light, thin, small, personalized, highly reliable and multi-functional. Aluminum substrates and copper substrates are born in compliance with this trend. So, what is the difference between aluminum substrate and copper substrate? Generally, the aluminum substrate is single layer, which is one of PCB boards. Because of its good thermal conductivity, it is considered as the general name of PCB specially used in LED industry. At present, the most commonly used LED aluminum substrate has front and back sides. The white side is welded with LED pins, and the other side presents the true color of aluminum. Generally, it is coated with thermal conductive paste and then used for contact with the thermal conductive part. Generally, the metal-based copper clad laminate with good heat dissipation function is composed of three layers, namely, circuit layer (copper foil), insulation layer and metal base layer. For high-end use, there are also double panels, with circuit layer, insulation layer, aluminum base, insulation layer and circuit layer. A few applications are multilayer boards, which can be made by bonding common multilayer boards with insulating layers and aluminum bases. Aluminum substrate is widely used in the fields of hybrid integrated circuit, automobile, office automation, high-power electrical equipment, power supply equipment and so on because of its excellent heat dissipation, good machinability, dimensional stability and electrical properties. The PCB boards we talk about most are generally copper substrates, which are also divided into single, double and multi-layer boards according to different layers. Compared with aluminum substrates, copper substrates are relatively more expensive in price because of their relatively special materials and better heat dissipation. They are mainly suitable for high-frequency circuits, areas with high and low temperature changes and the heat dissipation and architectural decoration industries of precision communication equipment. It should be noted here that the aluminum substrate cannot be perforated. Therefore, it can be easily seen whether the board is an aluminum substrate through the finished PCB board.