Four commonly used PCB plates
PCB board They are widely used, but they all have a specified scope. In terms of materials,PCB There are four kinds of commonly used plates with basic characteristics: good heat dissipation and insulation.
1.FR-4。
The code of fire-resistant material grade is the material specification that the resin material must extinguish itself after burning. It is not the material name, but the material grade. Therefore, there are many kinds of FR-4 grade materials used in general circuit boards, most of which are composites made of epoxy resin, filler and glass fiber called tera functio.
2. Resin.
Heat curing materials can produce polymer polymerization,PCB Epoxy resin is commonly used in the industry.
Functional features:
It has electrical insulation, can be used as the adhesive between copper foil and reinforcement (glass fiber cloth), and has electrical, heat resistance, chemical resistance and water resistance.
3. Fiberglass cloth.
The inorganic materials are fused at high temperature and then cooled and converged into amorphous hard materials. The reinforcing materials are formed by interweaving warp and weft.
The commonly used specifications of E-glass fiber cloth are 106, 1080, 3313, 2116 and 7628.
4. Aluminum substrate.
Of course, its base material is aluminum, which is composed of copper sheet, insulating layer and aluminum sheet. At present, it is widely used in LED lighting industry.
Reason: good heat dissipation performance.
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