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PCB Blog

pcb substrate material

Feb 18 2020

1. Phenolic PCB paper substrate
Since this PCB board is composed of pulp and wood pulp, it sometimes turns into cardboard, V0 board, flame retardant board and 94HB. Its main material is wood pulp fiber paper, which is a PCB made of phenolic resin. board.

Characteristics The paper substrate is not fire-resistant, can be perforated, has low cost, is cheap, and has a relatively low density. We often see XPC, FR-1, FR-2, FE-3 and other phenolic paper substrates. 94V0 belongs to fireproof cardboard.

2. Composite PCB substrate
This powder board also uses wood pulp fiber paper or cotton pulp fiber paper as a reinforcing material, and glass fiber cloth as a surface layer reinforcing material. Both materials are made of flame retardant epoxy. There are single-sided half-glass fiber 22F, CEM-1 and double-sided half-glass fiber board CEM-3. Among them, CEM-1 and CEM-3 are the most common copper clad laminates based on composite materials.

PCB substrate material

3. Glass fiber PCB substrate
Sometimes it also becomes epoxy board, fiberglass board, FR4, fiberboard, etc. It uses epoxy as a binder and glass fiber cloth as a reinforcing material. This circuit board has a higher operating temperature and is less affected by the environment. This board is often used for double-sided PCBs, but it is relatively expensive compared to composite PCB substrates, whose common thickness is 1.6MM. The substrate is suitable for a variety of power boards, advanced circuit boards, and is widely used in computers and peripherals, communication equipment and other applications.