03

2023

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07

What are the commonly used types of copper clad laminate?

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The main material of the circuit board is copper clad laminate, and copper clad laminate (copper clad) is composed of substrate, copper foil and adhesive. The substrate is an insulating laminate composed of polymer synthetic resin and reinforcing materials. The surface of the substrate is covered with a layer of pure copper foil with high conductivity and good weldability, usually with a thickness of 18μm ~ 35μm ~ 50μm; The copper clad laminate covered with copper foil on one side of the substrate is called single-sided copper clad laminate, and the copper clad laminate covered with copper foil on both sides of the substrate is called double-sided copper clad laminate. Whether the copper foil can be firmly covered on the substrate is completed by the adhesive. The thickness of commonly used copper clad laminate is 1.0mm, 1.5mm and 2.0mm.

1. According to the mechanical rigidity of copper clad laminate, it can be divided into rigid copper clad laminate (Rigid Copper Clad Laminate) and flexible copper clad laminate (Flexible CopperClad Laminate).

2. According to different insulating materials and structures, it can be divided into: organic resin copper clad laminate, metal-based copper clad laminate, and ceramic-based copper clad laminate.

3. According to the thickness of copper clad laminate, it can be divided into thick plate [plate thickness range is 0.8~3.2mm (including Cu)] and thin plate [plate thickness range is less than 0.78mm (excluding Cu)]].

4. According to the reinforcing materials of copper clad laminate, it is divided into glass cloth-based copper clad laminate, paper-based copper clad laminate and composite-based copper clad laminate (CME-1, CME-2).

5, according to the flame retardant grade is divided into: flame retardant board and non flame retardant board.

6. According to UL standards (UL94, UL746E, etc.), the flame retardant grade of CCL can be divided into four different flame retardant grades: UL-94V0 grade, UL-94V1 grade, UL-94V2 grade and UL-94HB grade.

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