Copper Based PCB
Currently, 99% of PCB on the market are copper-clad laminates (CCL), but a concept that often gets confused with this is copper-based board. Copper-clad laminate or CCL refers to the surface of the PCB being covered with copper while its substrate can be made of any material. Copper-based board or copper core board is a type of metal core PCB with copper as the base material.
Common metal-core PCB include aluminum and copper. Aluminum-based PCB are widely used in the LED industry due to their cost-effectiveness. On the other hand, copper-based PCB, although pricier, outperform aluminum in terms of thermal and electrical conductivity. They can be easily etched into very fine circuits to generate current and signal traces.
When to Use Copper-Based PCB
Many times, copper-based PCB might not appear on the list of alternatives for a project. The reason is simple—it’s the most expensive option. Even with constant price comparisons among manufacturers, this fact remains unavoidable. However, when it falls into the hands of users who excel at utilizing its features, a copper-based PCB becomes the optimal choice.
Ultimate Heat Dissipation
Heat can lead to a decline in circuit performance, and sometimes, heat threats are unavoidable. For instance, in the industrial sector, continuous operation of equipment causes the surrounding environment to rise. Or, high-power components can generate a significant amount of heat when activated. In such cases, you may need the assistance of a copper-based PCB. Of course, thoroughly understand the environmental factors of the application before use. Although copper’s thermal conductivity is double that of aluminum, aluminum’s thermal conductivity of approximately 200 W/(m·K) is sufficient for many applications. If aluminum is suitable, there’s no need to opt for the more expensive copper.
For some advanced applications where both heat dissipation and multiple layers are crucial, traditional PCB may struggle to meet thermal performance. Aluminum-based PCB find it challenging to achieve multilayer configurations. In such scenarios, copper-based PCB may be more suitable. Since we don’t need to use a thicker core to effectively manage heat, this provides more space for stacking additional layers, allowing for both high power and contributions to heat dissipation.
When designing circuit boards with frequencies ranging from hundreds of megahertz to gigahertz or rise times in the sub-nanosecond (picosecond or nanosecond) range, consider using a copper-core PCB. Copper cores can offer better signal integrity performance, preventing excessive distortion as signals propagate through the PCB. In high-frequency environments, circuit EMI is a major concern that can negatively impact the overall design’s signal integrity. As a ground layer, the copper core reduces EMI in the PCB, improving its electromagnetic compatibility.
Top Chinese Manufacturer of Copper-Based PCB
Essentially, the 製造工程 for almost any PCB is nearly identical, involving steps such as cleaning, stacking, graphic transfer, etching, and more. A copper-based PCB is no exception. However, as a type of metal substrate, its inherent material characteristics increase the processing difficulty, leading to higher processing costs and a longer delivery cycle. As a leading Chinese manufacturer of copper-based PCB, FS Technology focuses on selecting the right processing method and adjusting processing parameters to avoid any adverse effects. Additionally, after processing is complete, we conduct rigorous PCBテスト to meet customer requirements and expectations.
FS Technology always pays attention to the thermal conductivity requirements of the copper-based PCB you provide. Thermal conductivity is a crucial parameter for the heat dissipation performance of copper-based circuit boards and is one of the standards for measuring the quality of an LED copper-based PCB. The other two are thermal resistance and withstand voltage. The commonly referred thermal conductivity principle involves transferring heat conduction efficiency to the substrate at the graphic level of the copper-based PCB through a thermal insulation layer.
Thermal conductivity is a parameter of great concern for a copper-based substrate. It is divided into thermal electric separation copper-based PCB and ordinary copper-based PCB. The thermal conductivity of a thermoelectric separation copper-based substrate is 398W, while that of an ordinary copper-based substrate ranges from 1W, 2W, 3W… to 8W. The higher the thermal conductivity, the better the performance. FS Technology’s products are typically used in electronic products such as new energy automotive lighting, high-power LED lighting, medical optical instruments, communication base station equipment, digital projectors, and more.
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