In addition to design and production, advanced materials also help reduce problems in heavy copper PCB manufacturing. More importantly, these materials help achieve better performance and meet customer requirements. Here are some materials that should be helpful.
1. RTF copper should be used
RTF copper foil is usually the preferred material for heavy copper PCB manufacturers, mainly to meet the requirements of good heat resistance, corrosion resistance, and the ability to carry large currents and voltages. Why not choose standard copper? Because the Ra value of RTF (Reverse Processed Foils) is smaller than that of standard copper, it is more suitable for withstanding high voltage. In addition, extreme copper PCBs usually use two or more pieces of material, which has many advantages such as a lower probability of breakdown and higher product stability. In addition, if there is a problem with a certain part of the material, it can be repaired, but if there is a problem with the entire material, it cannot be repaired. The characteristic of copper is its good ductility, which can meet various processing requirements.
2. Better filling materials in lamination
When the inner copper thickness is greater than 4 ounces, based on past production experience, people usually use PP powder or resin filling to solve the high copper thickness filling solution. However, the disadvantages of this approach are also obvious. Firstly, the thickness is difficult to control, and the process is complex and the cycle is long. Therefore, with the advancement of technology, many thick copper PCB manufacturers, including Weisheng, now use the latest filling materials in the production of PCB thick copper plates. Firstly, the PCB surface is smoother after pressing, and secondly, the resin has better heat resistance and lower expansion coefficient. A high resin content will make the filling effect better, complementing each other. The special structure will also further improve reliability.
3. High thermal conductivity substrate
Someone may argue, 'If the copper thickness of the substrate with high thermal conductivity is higher, can a PCB with strong heat dissipation be formed to meet the increasing demand in technology?' Yes, it can. The thermal conductivity and heating rate of its finished product will be greatly improved. Compared with ordinary PCBs, the heating rate of thick copper PCBs can be reduced by about 10 °. For PCB, it is a huge progress. There will be more and more research in this area in the future, and most thick copper PCB manufacturers are working hard in this field to seize the opportunity.
In summary, the application of thick copper PCBs will become increasingly widespread in the future. Haibo and other manufacturers of thick copper PCBs will continue to work in this field, seeking better and more powerful production solutions and more advanced materials to produce the highest quality thick copper PCBs for our customers. In addition to thick copper rigid PCBs, we can also provide thick copper flexible PCBs, thick copper rigid flex PCBs, thick copper aluminum PCBs, and copper based PCBs. If you have any requirements for such special projects, please send us your documents for quotation. We look forward to serving you in the future.
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Haibo is an expert in the field of FPC/PCB manufacturing and surface mount assembly in China. Since our establishment in 2017, we have been providing high-quality PCBs to over 1000 customers worldwide. Our factory has passed ISO14001, ISO9001:2015, TS16949, and ISO13485:2016 certifications. We are one of the most trusted small and medium-sized FPC/PCB manufacturers in China.
