What are the classification of PCBs?

For the insiders, all know what the PCB is, where the application, but for the layman, the word is a look of loss, then let the macro line to tell you how much we use the daily things are not Open the PCB, which is what classification, where the application.

PCB board according to the number of circuit layers:. Divided into single-sided, double-sided and multi-layer board common multi-layer board is generally 4-layer or 6-layer board, complex multi-layer board up to ten layers it has the following three main types:

Single panel:. On the most basic PCB, the parts are concentrated on one side, the wires are concentrated on the other side because the wires only appear on one side, so the PCB is called a single panel (single side) because the single panel has many strict lines on the design line (Because only one side, the wiring can not cross and must be around the path), so only the early circuit to use such a board.

Double-sided board: This circuit board has both sides of the wiring, but to use the two sides of the wire, must be between the two sides of the appropriate circuit between the line between the circuit "bridge" called the hole (through hole) guide. The hole is a small hole filled with metal on the PCB, which can be connected to both sides of the wire. Because double-sided panels are twice as large as single-sided panels, and because cabling can be staggered (can be routed to the other side), it is more suitable for use on more complex than single-panel circuits.

Multi-layer board: In order to increase the area can be wiring, multi-layer board with more single or double-sided wiring board with a double-sided for the inner layer, two single-sided for the outer or two double- Two printed circuit boards with single-sided outer layers, which are interconnected by positioning systems and insulating bonding materials and conductive patterns are interconnected by design requirements. They are four-layer, six-layer printed circuit boards, also known as For multi-layer printed circuit board. The number of layers of the board represents several layers of separate wiring layers, usually the number of layers is even, and contains the outermost two layers. Most of the motherboards are 4 to 8 layers of the structure, but the technical theory can be done nearly 100 layers of PCB board. Large supercomputers use quite a lot of motherboards, but because such computers can already be replaced with a lot of ordinary computer clusters, ultra-multi-layer board has been gradually not used. Because the PCB in the layers are closely combined, generally not easy to see the actual number, but if you carefully observe the motherboard, or can be seen.

According to the hard and soft classification: divided into ordinary circuit boards and flexible circuit boards. PCB raw materials is copper clad laminate is the production of printed circuit board substrate material It is used to support a variety of components, and to achieve between them Electrical connection or electrical insulation. PCB is simply a thin plate with integrated circuits and other electronic components. It will appear in almost every kind of electronic equipment.