Heavy Copper PCB

Heavy Copper PCB

Heavy copper pcbs are used in high-current applications, such as power supplies. Their thick copper layers can handle the excessive currents and elevated temperatures that can ruin a normal PCB in seconds.

Because these circuit boards use such large plating thicknesses, it is important to communicate with your fabricator early in the design process. They can help you develop a stackup that meets your specifications and quality standards.


PCBs are a crucial component in modern electronic devices. They provide a compact, reliable path for current to flow. However, some products require a high current, which requires a special type of PCB. In addition, these products must withstand heat and cold conditions. Consequently, they must be manufactured with thick copper. This type of PCB is more expensive to produce than standard PCBs. However, if you know what to look for, you can find a manufacturer that offers heavy copper at a reasonable cost.

Heavy copper PCBs are fabricated using specialized etching and plating techniques. This process ensures that the thickness of the copper traces and sideswalls is uniform. It also allows the copper wire connections to be more robust and more durable. The use of heavy copper for PCBs can help reduce power losses and increase efficiency.

The main advantage of using heavy copper is that it can handle a higher current load and still maintain a lower overall temperature rise. This is due to the fact that copper has a lower coefficient of thermal expansion than other materials.

Moreover, heavy copper PCBs can be made in multilayer designs. This allows the circuitry to be placed in limited space, which is critical for high-current applications. Furthermore, these boards have superior conductivity and are better able to disperse heat. As a result, they can be used in high-powered applications, including military and aerospace products.


Compared to standard copper PCBs, heavy-copper PCBs are designed with thicker traces that can handle large currents. These traces are also more likely to conduct heat away from the board, which improves its performance and longevity. This is an important feature for many high-speed circuits, which can generate heavy copper pcb a lot of heat during operation. Moreover, the ability of heavy copper to conduct heat makes it an excellent choice for power distribution boards.

Heavy-copper PCBs can be manufactured in the same way as standard circuits, but require specialized etching and plating processes to increase their copper thickness. This is necessary to prevent the plated hole sidewalls from becoming thin and fragile. In addition, it can help to narrow the impedance distribution and improve signal transmission and isolation.

The design process of heavy copper PCBs is similar to that for standard PCBs, but requires extra considerations when defining track and gap spacing. This is because of the significant plating thickness, which can impact trace separation and pad size. In addition, it is crucial to work closely with the fabricator to discuss manufacturing tolerances and capabilities before submitting the final project.

The standard process of etching copper clad laminates for a PCB is not suitable for heavy-copper boards because it produces uneven trace sidewalls, which can reduce current carrying capacity and limit the plated holes’ life. To avoid this, designers should use a different fabrication process that allows for a higher copper thickness and a better resin fill.


The manufacturing process of heavy copper pcb involves etching and plating. The etching process removes the copper foil, while the plating process creates planes, pads, and traces. It is important to work with a manufacturer that has the proper experience and quality standards. This way, you can be sure that your prototype will be produced accurately and efficiently.

The PCBs made from heavy copper are more durable than standard PCBs. They are also capable of withstanding more thermal stress. In addition, they can carry more current and reduce voltage drop. They also provide more flexibility for the design of complex switches in limited space. These benefits make them popular in a variety of electronic applications.

When designing a heavy copper PCB, it is important to consider the amount of Heavy Copper PCB Supplier current that will be passed through the conductors. This will help you determine the appropriate thickness of the copper layer. To calculate the current, you can use a trace width calculator. This tool can calculate three different parameters: current, temperature increment, and trace width.

To produce a high-quality heavy copper circuit board, it is important to follow the guidelines set by the manufacturer. This will help ensure that the design meets all requirements and that it is free of errors. It is recommended to use a manufacturer with extensive experience in producing circuit boards with heavy copper.


PCBs made from heavy copper have superior current-carrying capacity and can withstand high temperatures, which is why they are increasingly used in telecommunications, power and industrial control. They can also resist the reoccurring thermal cycles that can damage conventional circuit boards in just a few seconds. In addition, they can disperse heat more effectively.

To produce a heavy copper board, you need to use specific plating and etching techniques. Using the same techniques as regular PCBs will result in over-etched margins and uneven trace sidewalls. However, with the right etching and plating process, you can produce heavy copper PCBs with high-quality edges.

The copper used in a heavy copper PCB is thicker than that of standard PCBs, which enables the board to carry more current. It also has better conductivity, which translates into lower impedance and lower losses. Additionally, it can withstand higher temperature levels and can be used in harsh environments.

Heavy copper PCBs are typically made from FR-4 material with copper thickness of up to 14 ounces. These circuit boards can be fabricated to accommodate multiple components and are ideal for use in high-performance applications. They are also used in medical devices and automotive and military vehicles. They are also more durable than standard PCBs and offer improved mechanical strength at connector sites and in plated through holes.