PCB Main Material

The main materials of PCB boards include:

Substrate: the base material of the PCB board, which usually consists of polymer synthetic resin and reinforcing material to form an insulating laminate.

Copper Clad Laminate: mainly composed of substrate, copper foil and adhesive. The surface of the substrate is covered with a layer of high conductivity, weldability is very good pure copper foil, copper foil covered in the substrate on one side of the copper cladding board known as single-sided copper cladding board, if the two sides of the substrate are all covered with copper foil is known as double-sided copper cladding board. The thickness of copper foil is usually 0.5oz-6oz (1oz=1.4mil), and different thicknesses are suitable for different types of circuit board designs.

Fibreglass cloth: is widely used in the manufacture of double-sided boards and multilayers, while epoxy resin and polyimide are used in the manufacture of high-density multilayers.

Hardeners: by reacting with epoxy resin to form a 3D mesh structure, which makes the PCB board have good mechanical properties and high temperature resistance.

Overall, the main material composition of the PCB board is relatively complex, these materials through different combinations and processing methods can produce a variety of types of PCB boards to meet the needs of different electronic devices.