The names of circuit boards include: circuit board, PCB, aluminum substrate, high-frequency board, thick copper board, impedance board, PCB, ultra-thin circuit board, ultra-thin printed circuit board, and printed (copper etching technology) circuit board, etc. Circuit boards miniaturize and visualize circuits, playing an important role in the mass production of fixed circuits and optimizing electrical layouts. A circuit board can be referred to as a printed circuit board or PCB. FPC circuit boards, also known as flexible circuit boards, are made of polyimide or polyester film as the substrate, and are highly reliable with excellent flexibility.
Single-Sided Boards: We just mentioned this, so we call this type of PCB a single-sided board. Because single-sided boards have many strict limitations in circuit design (since there is only one side, the wiring cannot cross and must follow a unique path), only early circuits used this type of board.
Double-Sided Boards: This type of circuit board has wiring on both sides. However, to use the wires on both sides, there must be proper circuit connections between the two sides. This “bridge” between circuits is called a via. A via is a small hole filled or coated with metal on the PCB that can connect the wires on both sides. Because the area of double-sided boards is twice that of single-sided boards, and because the wiring can interlace (can wrap to the other side), it is more suitable for more complex circuits than single-sided boards.
Multi-Layer Boards: For more complex application requirements, circuits can be arranged in a multi-layer structure and laminated together, with through-hole circuits built between layers to connect circuits across layers.
Circuit Board Manufacturers: Main Components of Circuit Boards
Circuit boards are mainly composed of pads, vias, mounting holes, wires, components, connectors, filling, and electrical boundaries. The main functions of each component are as follows: Pads: Metal holes used for soldering component pins. Vias: There are metal vias and non-metal vias, where metal vias are used to connect component pins between layers. Mounting Holes: Used to fix the circuit board. Wires: Electrical network copper film used to connect component pins. Connectors: Components used for connecting between circuit boards. Filling: Copper filling for ground network, which can effectively reduce impedance. Electrical Boundaries: Used to determine the size of the circuit board; all components on the circuit board must not exceed this boundary.
