Heavy Copper PCB

Heavy Copper PCB

Heavy copper pcb have a high current carrying capacity and can be used in a wide range of applications. They also generate less heat than regular PCBs and have lower failure rates.

To produce a heavy copper circuit board, manufacturers use a combination of etching and electroplating. This helps thicken the copper traces on the board, improving electrical conductivity and dissipation methods.


In PCB manufacturing, the thickness of copper foils is an important factor. Increasing the thickness of the copper increases the current-carrying capacity. However, too much thickness can lead to thermal problems. To avoid this, manufacturers use advanced etching techniques to ensure that the copper thickness is uniform and the edges are straight.

Typically, PCBs with thick copper have a higher price tag than standard ones. This is because the thicker copper increases the manufacturing costs. However, this cost can be offset by the increased current-carrying capacity of the board.

Another benefit of thicker copper is its thermal conductivity. This means that it can dissipate more heat than regular copper PCBs. This is especially important in devices that require high currents, as they can be damaged by excessive heat.

A heavy-copper PCB is a circuit board with heavy copper pcb copper thicknesses of 3oz or more. This is a significant improvement over the copper used in standard PCBs, which can be as low as 1oz. While the thicker copper is more expensive than standard copper, it provides an increased current-carrying capacity and improves the overall reliability of the circuit.

This type of PCB is also ideal for power transmission and control applications, including UPS systems, railway traction systems, and solar panels. The main reason for using this type of PCB is its ability to withstand high-voltage and large currents.


Heavy copper pcbs have a higher current-carrying capacity than standard FR-4 boards and are more resistant to heat, cold, and corrosion. They also have an excellent loss factor, making them ideal for large components that generate a lot of power losses. They can be found in a wide range of military and defense applications, but are also becoming increasingly common in mainstream electronics.

The durability of a PCB is determined by its substrate material and copper thickness. The substrate should have a low coefficient of thermal expansion to avoid cracks and layer separation. It should also have a high CTI, CAF, and Tg to handle the mechanical stress that is delivered to the plated through holes. It should also have a high dielectric breakdown voltage, which is the maximum gradient of current that a substrate can sustain before breaking down.

It is important to design a heavy copper pcb with the proper geometry, line width, and spacing. This will reduce the amount of resin that is needed for lamination and reduce the risk of delamination after assembly. In addition, the designer should also consider the location of sensitive components to ensure they are not exposed to excessive heat. Additionally, the design should allow for feasible testing procedures. This will allow the product to be repaired if it is damaged or fails to function properly.


Heavy copper pcb is a special type of printed Heavy Copper PCB Supplier circuit board that can be used in high-current applications. This PCB has thicker copper foils than regular PCBs and is more durable in harsh environments. This type of pcb is often used in electronic trucks, industry equipment, and even power modules for electrical cars. These products need to run a lot of currency, so they require higher currents than normal electronics. This can cause the copper traces to burn if they are too thin, and that’s where heavy copper pcb comes in.

Thick copper PCBs can also dissipate heat faster, which is useful for running devices for long periods of time. They can also handle fluctuating power output, which is especially important for high-end devices that need to be able to operate under different conditions.

Copper has a standard conductivity of 401W/mK, and it can transfer current better than other types of materials. These properties make it a good choice for reducing device failure due to temperature rise. Additionally, copper’s thermal conductivity can pull heat away from the devices’ temperature-sensitive components. This can reduce the risk of overheating and short circuits, which can damage a device in seconds.

PCBs with thick copper can be fabricated using various techniques, including copper-based etching and solder masking. However, there are certain issues that can be caused by the use of this material, including difficulties in determining trace separations and pad sizes. In order to avoid these issues, designers should work with the fabricator early on in the design process.


If you’re planning to purchase a heavy copper pcb, it is important to choose the right manufacturer. The manufacturer should be experienced in PCB fabrication and able to provide you with the best product at a competitive price. They should also have international certificates. Additionally, the manufacturer should have a wide range of PCBs to choose from.

Compared to standard printed circuit boards, thick copper PCBs can carry more current and conduct heat better. They are also more durable and have a higher temperature tolerance. These characteristics make them ideal for power electronics products, which require high-performance substrates.

Thick copper PCBs can be fabricated using various methods, but the etching process is more difficult than for regular copper boards. In order to etch the copper, the manufacturer must use a chemical solution such as Ferric Chloride. This solution will eliminate the unwanted copper and leave the copper-free areas that are needed for the traces. Once the etching is complete, the manufacturer can then electroplate the copper.

Generally, standard printed circuit boards use 1OZ of copper, while high-performance PCBs use 3 or more ounces of copper. These heavier copper thicknesses increase manufacturing costs and lead times. They also add to shipping charges as the boards are heavier than normal. The manufacturer should assist you in getting an estimate of additional cost and lead time for PCBs with copper weights above 1OZ.