4 Plate commonly used by PCB

　　1、FR-4

　　A flame resistant material grade code, represents the resin material must be able to burn a material specification, it is not a material name, but a material grade, so the current general circuit board FR-4 grade material has a lot of kinds, but most are so-called four function (Tera-Function) epoxy resin plus filler (Filler) and glass fiber composite material.

　　2. Resin

　　A thermal curing material, can occur polymer polymerization reaction, PCB industry is commonly used in epoxy resin.

　　functional characteristics:

　　With electrical insulation can be used as an adhesive between copper foil and reinforcement (glass fiber cloth) for electrical resistance, heat resistance, chemical resistance and water resistance

　　3. Fiberglass cloth

　　An inorganic material after high temperature fusion after cooling into a noncrystalline state, followed by the yarn, latitude yarn woven form of reinforcing material.

　　Commonly used E-glass fiber cloth specifications are: 106,1080,3313,2116,7628.

　　4. Aluminum substrate

　　Its substrate, of course, is aluminum, is composed of copper skin, insulation layer and aluminum sheet, is now commonly used in LED lighting industry, because of its good heat dissipation performance.

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