Printed circuit boards (PCBs) are key components in electronics assembly. They house other electronic components and interconnect circuits, providing a stable operating environment. Circuit configurations can be broadly categorized into three types:
[Single-sided PCBs] Metallic circuits for component connections are laid out on an insulating substrate material, which also serves as a support for the components.
[Double-sided PCBs] When circuits on a single side are insufficient to connect electronic components, circuits can be arranged on both sides of the substrate, with through-hole circuits provided to connect the circuits on both sides. Rigid PCBs are made from materials such as cardboard, fireproof board, and fiberboard. (English name: FR-4)
[Multi-layer PCBs] For more complex applications, circuits can be arranged in multiple layers, laminated together, and through-hole circuits are provided between the layers to connect the circuits.
