PCB is the core component of electronic products, the support body of microelectronic components, and the carrier of the electronic component’s electrical connection. Almost every electronic device is as small as electronic watches, calculators, as large as computers, communication electronic equipment, and military weapon systems. As long as there are electronic components such as integrated circuits, in order to make the electrical connection between each component, you must use printing. Plate. So far, the circuit board has been extensively used in all walks of life.
Faced with different working environments and diverse functional needs, PCB will also be different. For example, miniature electronic devices can be used as long as we design simple PCBs, and products in the fields of military industry, aerospace and other fields require high precision and high quality. It can be adapted to different environments, and this requires higher PCB. Distinct types of PCB correspond to different products. Allow me to talk about the type of PCB in detail.
Types of PCB
1. Single -layer line board
The single -layer board is the most basic PCB. The parts are concentrated on one side, and the wire is focussed on the other side (when there is a patch component, the wire is the same as the same side, and the plug -in device is on the other side). Because the wire only appears on one side, it is known as a single panel. The design of the single -layer board is relatively unadorned, which is generally used on some simple equipment.
2. Double-layer circuit board
There are wiring on both sides of the double -layer circuit board, but to use the wires on both sides, there must be an appropriate circuit connection on both sides. The “bridge” between this circuit is called a guide hole (VIA). The guide hole is a small hole full of metal on PCB, which can be attached to the wires on both sides. The double-panel solves the difficulty of the staggered wiring (can be guided to the other side through the hole) in the single -panel, which is more suitable for the more complicated circuit than the single -to -panel.
Double -sided PCB is usually used for applications that require medium and complex circuits, such as industrial control, power supply, instrument, HVAC system, LED lighting, automobile dashboard, amplifier and automatic vending machine.
3. Multi-layer circuit board
Multi-layer circuit board refers to a circuit board with 3 or more layers. In order to enhance the area that can be wiring, the multi -layer board uses more or double -sided wiring boards. Use one double -sided as the inner layer, two -sided single -sided as the outer layer or two double -sides as the inner layer, two -sided single -sided outer layer printing line board, alternate the positioning system and insulating bonding material, and the electrophoretic graphics The interconnected printing circuit boards are made according to design requirements.
The design of the multi -layer board is established according to the function of the product. Generally speaking, the more complicated the function of the PCB of the product, the higher the number of layers of the PCB. According to theoretically, the multi -layer PCB can be up to more than 100 layers. Multi -layer PCB is mainly used in the fields of computers, communication equipment, medical equipment, aerospace equipment, military products and other fields.
4. Flexible PCB
Flexible circuit board is hereby designated as “soft board”. The industry is generally known as FPC. It is a printing circuit board made of elastic insulating substrate. It has the advantages that many hard print circuit boards do not possess. Essence The use of FPC can greatly reduce the volume of automated products, and the need for electronic products to develop in high density, miniaturization, and high reliability.
The flexible circuit provides excellent electrical performance, which can meet the design needs of smaller and higher -density installation, and also help reduce assembly procedures and enhance reliability. Therefore, a flexible circuit board is the only solution to meet the miniaturization and movement requirements of automated products.
5. Rigid PCB
Rigid circuit board is commonly known as rigid board, which is a printed circuit board that is not easy to bend and is not easy to bend. The rigid circuit board uses conductive tracks and other components arranged on the non -conductive substrate to connect to electronic components. The strength and stiffness of the non -conductive substrate enhanced board will provide support for the component. Prevent the heat damage of the circuit board.
The characteristics of rigid circuit board
1) High integration: The continuous development of circuit board design and patch installation technology, the circuit board layout has been highly integrated.
2) Custom design: Analyze the demand according to the function of the product, formulate a design plan, and then customize the design of the circuit board.
3) Testability: You can use various testing equipment according to the test standards and requirements to detect whether the circuit board is qualified.
4) High reliability: pass a series of tests to ensure the service life of the circuit board and improve product reliability.
5) High installation accessories: The stability of the rigid circuit board is good, high temperature resistance, and the circuit design is more convenient, reducing the difficulty of assembly.
6. High -frequency circuit board
High -frequency PCB refers to PCB, which refers to a special line board with high electromagnetic frequency, for high frequency (frequency greater than 300MHz or wavelength less than 1 meter) and microwave (frequency is greater than 3GHz or the wavelength is less than 0.1 meters). It is in microwave substrate covering Circuit boards produced by ordinary rigid circuit board manufacturing methods on the copper plate or produced by special treatment methods.
The PCB high -frequency circuit board with induction heating technology has been widely used in the communication industry, promoting the development of network technology and high -speed information processing systems, and meeting the requirements of various high -precision parameter instruments.
7. Ceramics PCB
Ceramics PCB refers to a substrate for ceramics. Ceramic PCB is combined with copper foil and ceramic substrates in a high temperature environment. The combination is potent, the copper foil will not fall off, the reliability is high, and the performance is stable in environment with high temperature and high humidity environment. Essence Due to the heat dissipation performance, load capacity, insulation, thermal expansion coefficient, etc., they must be greatly better than ordinary glass fiber PCB plates, which are widely used in high -power electronic modules, aerospace, military electronics and other products.
Ceramic PCB advantage
7.1 The volume of the load is large, the 100A current passes the 1mm0.3mm thick copper, and the temperature rise is about 17 ° C; the 100A current continuously passes the 2mm0.3mm thick copper, and the temperature rise is only about 5 ° C; the temperature is only about 5 ° C;
7.2 Better heat dissipation performance, low thermal expansion coefficient, stable shape, and not easy to deform and warp.
7.3 Good insulation, high pressure resistance, and ensuring personal safety and equipment.
7.4 Strong binding force, using key -combined technology, copper foil will not fall down.
7.5 High reliability, durable performance in environments with high temperature and high humidity.
The above is the type of PCB. If you need in order to customize PCB, you can contact us. Leadinster is a professional PCB manufacturer. It provides PCB one -stop service, send emails, and quotes quickly.