Type of board

Board systems are classified into the following three types:

Single panel(Single-Sided Boards)

On the most basic PCB, the parts are concentrated on one side and the wires are concentrated on the other side. Because the wire only appears on one side, we call this PCB a single-sided. Because the single panel has many strict restrictions on the design line (because there is only one side, the wiring can not be crossed  and must be around the original path), so only the early circuit used this type of board.

Double panel(Double-Sided Boards)

This board has wiring on both sides. However, to use the wires on both sides, it is necessary to have proper circuit connections between the two sides. The "bridge" between such circuits is called a via. The via hole is a small hole filled or coated with metal on the PCB, which can be connected to the wires on both sides. Because the area of ??the double panel is twice as large as that of the single panel, and because the wiring can be interlaced (can be wound around the other side), it is more suitable for circuits that are more complex than single panels.

Multilayer board(Multilayer board)

In the case of more complicated application requirements, the circuit can be arranged in a multi-layer structure and pressed together, and a through-hole circuit is connected between the layers to connect the layers of the circuit.

This article is from ALLICDATA ELECTRONICS　LIMITED.