Aluminum Base Copper Clad Laminate PCB

Why is Aluminium used in circuits?

This is because the Aluminum base board is composed of three layers: copper foil, insulating layer and metal aluminum. Since there is an insulating layer, can the metal layer be made of other materials besides aluminum? Such as copper plate, stainless steel, iron plate, silicon steel plate,Metal Core PCB (MCPCB)， etc. What kind of material is used for the metal substrate, in addition to considering the heat dissipation performance, but also consider the thermal expansion coefficient, thermal conductivity, strength, hardness, weight, surface condition and cost of the metal substrate.

Under normal circumstances, considering the cost and technical performance, aluminum plate is an ideal choice. Available aluminum plates are 6061, 5052, 1060, etc. If there are higher thermal conductivity, mechanical properties, electrical properties and other special performance requirements, copper plates, stainless steel plates, iron plates and silicon steel plates can also be used. Commonly used in Aluminum LED board products, there are two sides, the white side is soldered with LED pins, and the other side presents the natural color of aluminum. Generally, the thermal conductive paste is applied to contact the thermal conductive part. Mainly used in LED lamps and audio equipment, power supply equipment, etc., the main advantages are fast heat conduction and good heat dissipation performance.
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