What types of PCB boards can be divided into?

PCB board, or printed circuit board, is one of the most important components in electronic equipment.

The earliest printed circuit boards used were paper-based copper-clad printed boards. Since the emergence of semiconductor transistors in the 1950s, demand for printed boards has increased dramatically. In particular, the rapid development and widespread application of integrated circuits has made electronic equipment smaller and smaller, and circuit wiring density and difficulty have become increasingly high, which requires printed boards to be constantly updated. At present, the types of printed boards have developed from single panels to double panels, multi-layer boards and flexible boards; the structure and quality have also developed to ultra-high density, miniaturization and high reliability; new design methods, design supplies and Board-making materials and board-making processes are constantly emerging. In recent years, various computer-aided design (CAD) printed circuit board application software has been popularized and promoted in the industry. Among specialized printed circuit board manufacturers, mechanized and automated production have completely replaced manual operations.

According to different classification methods, PCB boards can be divided into many types. The following are several common types of PCB boards:

1. Classification according to structure

Single-sided board: Only one side of the single-sided board has a conductive path, and the other side is an insulating substrate. This kind of PCB board is simple to make and low in cost, but it cannot achieve double-sided wiring. Commonly used in applications that do not require high circuit requirements.

Double-sided PCB: Double-sided PCB refers to a PCB board with conductive paths on both sides. The two sides are connected through holes or pads. This kind of PCB board can achieve double-sided wiring, but the production is more complicated and the cost is relatively high. Commonly used in general electronic equipment.

Multilayer board: A multilayer board is a PCB board composed of multiple layers of conductive paths and insulating substrates. This kind of PCB board can provide more wiring space and has higher reliability and stability. Commonly used in high-precision electronic equipment and computers.

2. Classification according to usage

Signal board: The signal board refers to the PCB board whose main function is to transmit signals. This kind of PCB usually contains a large number of transmission lines, connectors, resistors and capacitors and other components to realize circuit functions.

Power board: A power board refers to a PCB board whose main functions are power distribution and voltage stabilization. This PCB usually contains components such as power converters, filters, and voltage regulators, which are used to provide stable power to electronic devices.

Interface board: The interface board refers to a PCB board whose main functions are interface conversion and communication. This kind of PCB usually contains various interface circuits (such as USB, RS232, Ethernet, etc.) and communication chips, which are used to realize data transmission and communication between different devices.

Radio frequency board: Radio frequency board refers to a PCB board with radio frequency signal processing as its main function. This kind of PCB usually contains RF transceivers, filters, mixers and other components, which are used to implement RF signal processing in wireless communications, radar, radio and other applications.

Sensor board: The sensor board refers to the PCB board with sensor signal processing as its main function. This PCB usually contains various sensors (such as temperature sensors, pressure sensors, light sensors, etc.) and signal processing circuits for monitoring environmental parameters or realizing automated control.

3. Classification according to materials

Paper board: Paper board is a PCB board with paper pulp as the insulating substrate. This kind of PCB board is low in cost, but has low strength and is not suitable for high reliability applications. Commonly used in some low-cost simple electronic products.

Fiberglass board: Fiberglass board is a PCB board with fiberglass as the insulating substrate. This kind of PCB board has high strength and high temperature resistance, but the cost is high. Often used in electronic products that require high reliability.

Epoxy resin board: Epoxy resin board is a PCB board with epoxy resin as the insulating substrate. This kind of PCB board has high strength and heat resistance, but the cost is also relatively high. Commonly used in high reliability electronic products.

Polyimide board: Polyimide board is a PCB board with polyimide as the insulating substrate. This kind of PCB board has extremely high heat resistance and reliability, but the cost is high. It is often used in electronic products with high temperature and high reliability requirements, such as aerospace and military fields.

4. Classification according to production process

Organic board: Organic board refers to a PCB board made of organic materials. The manufacturing process of this kind of PCB board is relatively simple and the cost is low, but its strength is low and its high temperature resistance is poor. Commonly used in some low-cost electronic products.

Inorganic board: Inorganic board refers to a PCB board made of inorganic materials. The manufacturing process of inorganic boards is more complex and the cost is higher, but it has high strength and high temperature resistance. Commonly used in high-reliability electronic products, such as aerospace and military fields.

To sum up, it can be divided into many types according to different classification methods. When selecting a PCB board, it is necessary to select the appropriate type and material based on actual application requirements and equipment characteristics, while taking into account factors such as cost and manufacturability.

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