The PCB industry is the industry with the largest output value in the global electronic component industry, and it is also the basic industry for electronic information product manufacturing. In 2019, affected by multiple factors, the global PCB industry output value fell slightly by 1.7% year-on-year to US$61.3 billion. Although COVID-19 impact on the industry, the rapid development of 5G has allowed the PCB industry to grow. It is estimated that the global PCB output value will be 62.5 billion US dollars in 2020 and reach 79.2 billion US dollars by 2025.

Although the current level of semiconductor integration is getting higher and higher, many applications also have system-on-chips available at any time, and many powerful and out-of-the-box development boards are also more and more easily available, but many use cases in electronic products The application still needs to use a custom PCB. In one-time development, even an ordinary PCB can play a very important role. PCB is the physical platform for design and the most flexible part for electronic system design of original components.

This article will take you to understand the basic knowledge of PCB process and manufacturing flow.

As trade tensions between China and the U.S. intensify, the U.S. semiconductor industry is worried that the relationship between the two sides of the technology may damage the global supply chain. Now, companies on both sides of the Pacific are trying to develop risk reduction strategies - whether it's hoarding supplies or considering relocating production facilities.

PCB manufacturing industry is a technology intensive industry with high technical barriers. PCB industry integrates electronics, machinery, computer, optics, materials, chemical engineering and other disciplines to engage in product manufacturing services.

In the design of high frequency PCB circuit, do you encounter the following problems?

Key materials that may be widely used in 5G industry.

The printed circuit board is basically composed of the pad, via, solder mask, silkscreen layer, copper circuit, and various components. Copper is a relatively active metal. It is easy to react with oxygen in the air.

The base material is generally classified according to the insulation part of the substrate. The common raw materials are electrical wood, fiberglass board, and various types of plastic board. PCB manufacturers generally use an insulating part made of glass fiber, non-woven material and resin, and then press epoxy resin and copper foil into "prepreg".

PTFE material is a thermoplastic material, which is softer and easier to bend than the traditional FR4 PCB material, and the cost is high.

Aluminum substrate PCB is a kind of metal based copper clad laminate with good heat dissipation function.

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