Electronic manufacturing printed circuit boards (hereinafter referred to as PCB) products have been in commercial use since 1948 and began to emerge and become widely used in the 1950s. The traditional PCB industry is a labor-intensive industry and its technical intensity is lower than that of the semiconductor industry. Since the early 2000s, the semiconductor industry has gradually shifted from the US and Japan to Taiwan and China. So far, China has become an influential PCB producer in the world, accounting for more than 60% of the world’s PCB output.

Medical equipment:

Today’s advances in medical science are entirely due to the rapid development of the electronics industry. Most medical devices (e.g., pH meters, heart rate sensors, temperature measurements, ELECTROcardiogram/EEG, MRI devices, X-rays, CT scans, blood pressure devices, blood glucose level measuring devices, incubators, microbiological devices, etc.) are pcBS-based for individual use. These PCBS are usually compact and have small shape coefficients. Density sensors mean placing smaller SMT components in smaller PCB sizes. These medical devices are smaller, easier to carry, lighter and easier to operate.

Industrial equipment.

PCBS are also widely used in manufacturing, factories and adjacent plants. These industries have high-power machinery driven by high-power working circuits that require large current. To do this, the top layer of the PCB is coated with a thick layer of copper, which, unlike complex electronic PCBS, carries a current of up to 100 amperes. This is particularly important in applications such as arc welding, large servo motor drivers, lead-acid battery chargers, ambiguity of cotton cloth for military industry and clothing.

The light

In lighting, the world is moving towards energy efficient solutions. These halogen bulbs are rare now, but now we see LED lights and high-intensity leds around. These small leds provide high brightness light and are mounted on aluminum-based PCBS. Aluminum has the property of absorbing heat and radiating it into the air. Therefore, because of the high power, these aluminum PCBS are commonly used in LED lamp circuits of medium and high power LED circuits.

Automotive and aerospace

Another application of PCBS is in the automotive and aerospace industries. A common factor here is reverberation from moving aircraft or cars. Thus, in order to satisfy these high-force vibrations, the PCB becomes flexible.

Therefore, use a PCB called Flex PCB. The flexible PCB can withstand high vibration and light weight, thus reducing the overall weight of the spacecraft. These flexible PCBS can also be adjusted in a narrow space, which is also a big advantage. These flexible PCBS serve as connectors, interfaces, and can be assembled in compact Spaces, such as behind panels, under dashboards, etc. A combination of rigid and flexible PCBS can also be used (rigid-flexible PCBS).

From the distribution of application industry, consumer electronics accounted for the highest proportion, up to 39%; Computers accounted for 22%; Communication 14%; Industrial controls and medical equipment accounted for 14 per cent; Automotive electronics accounted for 6%. Defense and aerospace accounted for 5%, aerospace and medical devices and other fields have high requirements for PCB accuracy.

PCB is widely used because it has many unique advantages, which can be summarized as follows.

1. High-density.

With the improvement of integrated circuit integration and installation technology, high-density PCBS can be developed.

2. High reliability.

Through a series of inspections, tests and aging tests, the PCB can be guaranteed to work reliably for a long time.

3. Designability.

For all kinds of PCB performance (electrical, physical, chemical, mechanical, etc.) requirements, can be standardized through design, standardization and other ways to achieve printed board design time is short, high efficiency.

4. Productive.

Through modern management, standardization, scale (quantity), automation and other production can be carried out to ensure consistency of product quality.

Testability.

A relatively complete test method, test standards, various test equipment and instruments have been established to test and identify PCB products for conformity and service life.

6. Assemblability.

PCB products not only facilitate standardized assembly of various components, but also facilitate automatic and mass production.

At the same time, PCBS and assembly parts of various components can be assembled into larger parts, systems, or even entire machines.

7. Maintainability.

PCB products and component assemblies are standardized because they are designed and manufactured to a standardized scale.

In this way, once the system fails, it can be quickly, easily and flexibly replaced, and quickly restore the work of the service system.