What is the material of the circuit board?

As the support of electronic components, PCB circuit board is widely used and has good heat dissipation and insulation characteristics. According to Bian Xiao, there are four kinds of materials commonly used in pcb: FR-4, resin, glass fiber cloth and aluminum substrate.

1.FR-4 .

FR-4 is a kind of heat-resistant material grade rather than a name, which refers to the material specification that resin materials must extinguish themselves after burning. At present, there are many kinds of FR-4 grade materials for circuit boards, most of which are called Tera-FuncTIon epoxy resin and composite materials made of fillers and glass fibers.

2. resin.

An epoxy resin material commonly used in PCB industry, thermosetting materials can produce polymer polymerization. Resin has excellent electrical insulation, can be used as an adhesive between copper foil and steel bar (glass fiber cloth), and has the characteristics of electrical conductivity, heat resistance, chemical resistance and water resistance.

3. Glass fiber cloth.

Inorganic materials are melted at high temperature and cooled to form amorphous hard objects, and reinforcing materials are interwoven by warp and weft.

E the commonly used specifications of glass fiber cloth are: 106, 1080, 33 13, 2 1 16 and 7628.

4. Aluminum substrate.

The main component of aluminum substrate is aluminum, which consists of copper skin, insulating layer and aluminum sheet. Aluminum substrate has good heat dissipation function, so it is widely used in LED lighting industry.