The characteristics and application fields of metal base PCB
The metal base PCB
The metal base PCB is made up of aluminum base or copper base, high thermal conductive dielectric layer and copper foil. Insulating dielectric layer is generally made of high thermal conductivity epoxy glass fiber adhesive sheet or high thermal conductivity epoxy resin, the thickness of the insulating dielectric layer is 80μm-100μm. General metal base thickness are 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm and 3.0 mm.
The copper base PCB has the basic properties of an aluminum base PCB, and its heat dissipation is better than aluminum base. Copper base PCB can carry large currents, and it is suitable for manufacturing high-power circuits such as power electronics and automotive electronics. However, copper base are high in density, high in price, and easily oxidized, which limits its application, and its usage is far less than aluminum base PCB.
Aluminum-based PCB have the largest amount of usage. Aluminum base have excellent electrical properties, heat dissipation, electromagnetic shielding, high pressure resistance and bendability. They are widely used in automobiles, motorcycles, computers, home appliances, communications and electronic products, and power electronics products and so on.