Thick copper PCB plays an important role in many fields with its high current carrying capacity, excellent thermal management performance and enhanced mechanical strength.
With the continuous development of electronic technology, the requirements for the current conduction and carrying capacity of circuit boards are getting higher and higher. Thick copper PCB has gradually become an important trend in the electronics field due to its unique material properties. Thick copper PCB mainly refers to the use of copper foil thicker than standard PCB in the manufacturing process. The copper thickness is usually 105 microns (3OZ) and above, and sometimes even up to 400 microns (12OZ).

Thick copper PCBs are widely used in the industrial field, especially in industrial automation, industrial robots, power supply systems, and renewable energy systems.
Today, SHENZHEN BEST PCBA CO., LIMITED introduces two thick copper PCBs. Both are 4-layer through-hole boards. The copper thickness requirements are 6OZ inside and 6OZ outside, and 3OZ inside and 10OZ outside! Let’s take a look at these two PCB:

           

The dark green PCB is a product with 3OZ inside and 10OZ outside, and the light green PCB is a product with 6OZ inside and 6OZ outside. Let’s take a look at their slice diagrams:

           

The circuit design of thick copper PCB is relatively simple, but it is difficult to control the parameters during the production process!

Material selection: For 10OZ thick copper circuit boards, prepregs with high resin content need to be selected to ensure that the amount of glue flowing from the interlayer prepregs is sufficient to fill the inner layer graphics, while avoiding quality problems such as too thick insulating dielectric layers causing the finished board to be too thick or too thin, resulting in delamination, high-voltage test failure, etc.

Pressing production: The copper thickness of thick copper plates cannot be completed by electroplating and powering up like ordinary PCBs. The copper thickness of 10OZ is achieved by pressing 0.3mm copper plates on both sides of the core board, and then electroplating and powering up. The pressing of copper plates is much more difficult than that of copper foil.

Drilling production: When using special plates with high TG, high speed, high frequency, and thick copper, the difficulty of drilling roughness, drilling burrs, and drilling pollution is increased. The cumulative total copper thickness and board thickness of multilayer boards make it easy for drilling knives to break, and the problem of oblique drilling caused by board thickness is a production difficulty.

Circuit production: Due to the thick copper foil, it is difficult to etch out the complete circuit by conventional etching methods. Different factories have their own etching technology for thick copper PCBs. We also adjust the process for different products, accurately control the etching depth and shape, and ensure the quality of circuits and holes.

 

With the development of science and technology, information and communication technology are changing with each passing day, and people’s requirements for computer performance are getting higher and higher. Correspondingly, the hardware requirements for computer communication equipment are also getting higher and higher. PCB is the basic product of electronic equipment, and its high-end precision determines the performance of the entire finished computer communication equipment!

Today, SHENZHEN BEST PCBA CO., LIMITED brings you an FPGA acceleration card for high-performance computing and network acceleration devices. Let’s first take a look at what the PCB board looks like.

The bright red solder mask ink, immersion gold + electroplated gold finger 30U” surface treatment process make the whole product look very high-end. But what really attracts people to this product is not just its appearance, but its complex design and precise production process.
First of all, let’s take a look at its step process.

The conventional step process is to use non-flowing glue PP to press and stack the layers in the step part. And our product needs to achieve a high-speed effect, so the whole board uses Panasonic M6 PCB high-speed board, but there is no non-flowing glue PP corresponding to M6 on the market. We can only use flowing glue PP for pressing, which is very challenging for the production of step parts.
In addition, this product is also an 18-layer mechanical blind hole board. Let’s take a look at the pressing structure diagram

The motherboard of the product is divided into two boards, L1-4 and L5-18, and the finished product is made after three laminations. The lamination of multi-layer boards is extremely difficult, and the lamination of multi-layer special board products must be controlled in detail. The result of a mistake is that all the previous efforts are wasted!
Finally, in order to ensure the transmission of high-speed signals, reduce signal attenuation, ensure that the signal is stronger and more reliable, and also to prevent signal distortion problems, we also added back drilling technology in product production.
CKT-1 drills from the top layer to the bottom layer with a depth of 1.25+/-0.05, CKB-1 drills from the bottom layer to the top layer with a depth of 0.35mm and a depth of 1.45+/-0.05, 0.351mm with a depth of 1.25+/-0.05, 0.352mm with a depth of 1.05+/-0.05, and 0.353mm with a depth of 0.2+/-0.05.

In today’s technological wave, the importance of printed circuit boards (PCBs) as an indispensable component in electronic devices is self-evident. Whether it is smartphones, computers, medical devices, automotive electronics, or even aerospace equipment, printed circuit boards are indispensable. So, what is the role of printed circuit boards? How can we choose the right circuit board according to project requirements?

The main function of printed circuit boards

Connection function
One of the core functions of printed circuit boards is connection. It can connect different electronic components through wires to form a complete circuit system. Through printed circuit boards, these components can work according to predetermined logic and sequence to achieve various complex functions.

Support function
In addition to the connection function, printed circuit boards can also provide stable support for electronic components. Electronic components are fixed on printed circuit boards to form a compact and stable overall structure. This structure can not only protect electronic components from interference and damage from the external environment, but also improve the stability and reliability of the entire circuit system.

Heat dissipation
In electronic equipment, as electronic components work, a lot of heat will be generated. If this heat cannot be dissipated in time, the performance of electronic components will be degraded or even damaged. The metal conductors and copper foil layers on the printed circuit board can effectively conduct heat to the surface of the circuit board, and then dissipate the heat into the air through devices such as radiators, thereby ensuring the normal operation of electronic components.

How to choose a suitable circuit board
Determine the type of circuit board according to project requirements
Before choosing a circuit board, you must first clarify the specific needs of the project. For example, the scale, complexity, and working environment of the project will affect the choice of circuit boards. For example, for projects that need to withstand harsh environments such as high temperature and high humidity, it is necessary to choose circuit boards with good heat and humidity resistance; for projects that need to achieve high-frequency transmission, it is necessary to choose circuit boards with lower impedance and higher bandwidth.

Consider the performance parameters of the circuit board
When choosing a circuit board, you also need to consider the performance parameters of the circuit board. For example, the number of layers, wire width, wire spacing, copper foil thickness, etc. of the circuit board will affect the performance of the circuit board. Generally speaking, the more layers, the wider the wire width, the smaller the wire spacing, and the thicker the copper foil, the better the performance of the circuit board. However, these parameters will also affect the cost and difficulty of making the circuit board. Therefore, when choosing a circuit board, you need to weigh it according to the actual needs of the project.

Choose reliable suppliers and manufacturers
When choosing a circuit board, you also need to choose reliable suppliers and manufacturers. A good supplier and manufacturer can provide high-quality circuit board products and can provide perfect after-sales service and technical support. Therefore, when choosing a circuit board, it is necessary to conduct in-depth investigation and understanding of the supplier and manufacturer to ensure that they have sufficient strength and credibility.

As an indispensable component in electronic equipment, the importance of printed circuit boards is self-evident. When choosing a circuit board, it is necessary to make comprehensive considerations based on the specific needs of the project, select the appropriate circuit board type and performance parameters, and select reliable suppliers and manufacturers. Only in this way can the smooth progress of the project and the high-performance operation of electronic equipment be guaranteed.

In this era of information explosion, communication technology has long penetrated into every aspect of our lives. However, do you know that behind every smooth video call and every instant message, there is an unsung hero – communication PCB (printed circuit board)? Today, let us unveil its mystery and explore how it affects the quality of our daily communications.

PCB, or printed circuit board, is a basic component used to connect electronic components in electronic devices. And communication PCB, specifically refers to those circuit boards used in communication equipment, which carry core functions such as signal transmission and data processing, and are the “nerve center” for the normal operation of communication equipment.

So, how does communication PCB affect the quality of our daily communications?
In terms of signal transmission, the design of communication PCB plays a vital role in the integrity and accuracy of the signal. A high-quality PCB design can ensure that the loss of the signal during transmission is minimized, thereby ensuring the clarity and reliability of communication. On the contrary, an unreasonable PCB design may cause signal attenuation, distortion, and even communication interruption.

Stability is another key indicator of communication equipment. The material, process and design of communication PCB directly affect the stability of the equipment. High-quality PCBs can resist interference from the external environment and reduce equipment failures, thereby ensuring the continuity and stability of communication.

Compatibility is also an issue we have to consider. With the continuous advancement of communication technology, new communication standards and interfaces are emerging in an endless stream. A good communication PCB should have a good forward-looking design, be able to adapt to future technology upgrades and changes, and ensure that users do not need to replace the entire communication system when replacing equipment or upgrading services.

In order to understand the importance of communication PCBs more intuitively, we can look at the construction of 5G base stations. 5G base stations have extremely high performance requirements for PCBs, because 5G signals have fast transmission speeds and large data processing volumes, which puts higher requirements on the signal transmission capacity and stability of PCBs. Only high-quality communication PCBs can ensure the stable transmission of 5G signals and provide users with a smoother communication experience.

Faced with such an important communication PCB, how should we improve its performance and user experience?
Choosing high-quality PCB materials and advanced manufacturing processes is the key. The design of PCBs also needs to keep pace with the times and constantly introduce new design concepts and technologies to adapt to the rapid development of communication technology. A strict quality control system is also essential to ensure that each communication PCB meets the expected performance standards.

As the core component of communication equipment, the performance of communication PCB is directly related to the quality of our daily communication. Understanding and valuing the role of communication PCB and choosing high-quality PCB products and services will be the key to improving the quality of our communication.

With the global attention to environmental protection and sustainable development, the new energy vehicle industry is ushering in a golden period of vigorous development. Against this background, the rigid-flex board market, with its unique advantages, is becoming an indispensable part of the new energy vehicle industry.

1. Application of rigid-flex boards in new energy vehicles
Battery management system: The battery management system is the “heart” of new energy vehicles, responsible for monitoring battery status, managing battery charging and discharging processes, etc. With its excellent electrical performance and reliability, the rigid-flex board ensures the efficient operation of the battery management system, thereby ensuring the endurance and safety of new energy vehicles.
Motor control system: The motor control system is the power source of new energy vehicles, and has extremely high requirements for circuit connection and signal transmission. The high-frequency signal transmission capability and excellent mechanical properties of the rigid-flex board provide a stable operating environment for the motor control system, ensuring the power performance and driving experience of new energy vehicles.
On-board electronic system: With the development of intelligent and networked new energy vehicles, on-board electronic systems are becoming more and more complex. With its thin and foldable characteristics, the rigid-flex board realizes the high integration and miniaturization of on-board electronic systems, meeting the requirements of new energy vehicles for space utilization and portability.
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II. The driving role of the soft-hard board market in the new energy vehicle industry
Improve the performance of new energy vehicles: The high performance of the soft-hard board provides a stable operating environment for the key components of new energy vehicles, thereby improving the performance of new energy vehicles. Whether it is the cruising range, power performance or driving experience, the soft-hard board plays an important role.
Promote technological innovation of new energy vehicles: With the continuous advancement of soft-hard board technology, the technological innovation of new energy vehicles has also been accelerated. For example, the application of soft-hard boards has promoted the integration and intelligence of vehicle electronic systems, bringing more possibilities for new energy vehicles.

Reducing the cost of new energy vehicles: The thin and foldable characteristics of the soft-hard board have achieved high integration and miniaturization of new energy vehicle equipment, reducing the consumption of materials and energy. At the same time, with the improvement of production technology and the increase in the degree of automation, the cost of the soft-hard board is also gradually decreasing, providing greater cost advantages for the new energy vehicle industry.
III. Challenges and opportunities faced by the soft-hard board market

Although the soft-hard board market plays an important role in the new energy vehicle industry, it also faces some challenges. For example, technical difficulty and cost issues are still the main factors restricting the development of the soft-hard board market. However, with the rapid development of the new energy vehicle industry and the continuous growth of market demand, the rigid-flex board market has also ushered in huge opportunities.

In order to seize opportunities and meet challenges, the rigid-flex board market needs to increase R&D investment and promote technological innovation and industrial upgrading. At the same time, strengthen cooperation and exchanges with the new energy vehicle industry, deeply understand market demand and technological trends, and provide the new energy vehicle industry with better quality and more efficient products and services.

The rigid-flex board market is becoming an indispensable part of the new energy vehicle industry with its unique advantages. Through technological innovation and industrial upgrading, the rigid-flex board market will inject more power into the development of the new energy vehicle industry and promote the new energy vehicle industry towards a better future.