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How many types of PCB board reinforcement materials are there?


PCB board reinforcement materials are generally divided into the following types:


1. Phenolic PCB paper substrate

Because this kind of PCB board is composed of paper pulp, wood pulp, etc., it sometimes becomes paperboard, V0 board, flame retardant board and 94HB, etc. Its main material is wood pulp fiber paper, which is a kind of PCB synthesized by phenolic resin pressure. board.
This kind of paper substrate is not fireproof, can be punched, has low cost, low price and low relative density. We often see phenolic paper substrates such as XPC, FR-1, FR-2, FE-3, etc. And 94V0 belongs to flame-retardant paperboard, which is fireproof.



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2. Composite PCB substrate

This kind of powder board is also called powder board, with wood pulp fiber paper or cotton pulp fiber paper as reinforcement material, and glass fiber cloth as surface reinforcement material at the same time. Both materials are made of flame-retardant epoxy resin. There are single-sided half-glass fiber 22F, CEM-1 and double-sided half-glass fiber board CEM-3, among which CEM-1 and CEM-3 are the most common composite base copper clad laminates.





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3. Glass fiber PCB substrate

Sometimes it also becomes epoxy board, glass fiber board, FR4, fiber board, etc. It uses epoxy resin as adhesive and glass fiber cloth as reinforcement material. This kind of circuit board has a high working temperature and is not affected by the environment. This kind of board is often used in double-sided PCB, but the price is more expensive than the composite PCB substrate. The common thickness is 1.6MM. This kind of substrate is suitable for various power supply boards, high-level circuit boards, and is widely used in computers, peripheral equipment, and communication equipment.




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4. Other substrates

In addition to the three frequently seen above, there are also metal substrates and multilayer multilayer boards.

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