Factors to Consider When Buying a Heavy Copper Power PCB

Factors to Consider When Buying a Heavy Copper Power PCB

Heavy copper power PCBs are multilayer circuit boards that feature up to 20 oz of pure copper. They are used for high current and voltage applications, such as power converters, planer transformers, and military equipment.

These PCBs require a special etching process, and designers must be aware of the consequences of their design choices. These include track and gap spacing, current carrying capacity, and temperature rise.


If you’re in the market for a high-performance PCB, there are several factors to consider before buying one. First of all, make sure you get a quality board from an experienced manufacturer with state-of-the-art equipment and facilities. This will ensure that your board is made to the highest standards and can withstand a wide range of temperature conditions. In addition, you’ll want to find a manufacturer that offers custom solutions for unique shapes and sizes, copper thicknesses, and other requirements.

It’s also important to pay attention to the line width and spacing of your circuits. These factors can help you determine the current-carrying capacity of your circuits. In order to do this, you should measure the copper wire connections and functions before starting the design process. This way, you can choose a trace width that will allow for the proper amount of current and avoid wasting materials.

Another thing to keep in mind is the substrate material of your board. The substrate should have a low TCE (thermal coefficient of expansion) to prevent cracks and layer separation, and it should have a high Tg (glass transition temperature) to withstand the high mechanical stress that is placed on the plated holes.

In addition to its cost-effectiveness, heavy copper power PCBs are more durable than traditional copper boards. They can withstand extreme temperatures, heat, and corrosion, making them an excellent choice for a variety of applications.


Unlike standard PCBs, heavy copper power circuits have a higher copper percentage and can conduct current efficiently. They are also more durable and can withstand extreme use conditions, including temperature and current fluctuations. These features make them ideal for high-voltage applications. They can prevent electrical collapse in appliances and other electronic devices that typically happen when using a thin film PCB. Heavy copper power PCB They can also protect against lightning strikes and other environmental factors that cause damage to the circuit boards.

To make the most of the benefits of heavy copper, it is important to use specialized etching and plating techniques. This will ensure that the board has straight sidewalls and a low undercut. It will also help the copper conduct heat better and improve its durability. Additionally, the substrate material must be appropriate for the increased heat generated by the thick copper.

The current-carrying capacity of a PCB is determined by its copper weight, the thickness of its plating, and the width of the trace. It is essential to understand these parameters and determine the proper copper thickness for a given circuit design. The PCB fabricator will also need to know the current requirements and the maximum temperature rise to guarantee that the board can withstand these conditions.

Heavy copper PCBs are widely used in high-voltage applications and can withstand a wide range of temperatures. They are also known for their excellent thermal conductivity. They can be used in a variety of environments, including industrial and military applications. They can also be used in position control systems, such as those found in weapons controls.


Heavy copper power PCBs have a higher tolerance capacity than standard ones, which make them ideal for use in harsh environments. They can withstand high current levels, elevated temperatures, and recurrent thermal cycling, all of which are likely to damage a regular circuit board. This makes them a good choice for applications in the military, aerospace, and automotive industries.

The reliability of a PCB depends on the amount of current it can carry, the temperature increment, and the trace width. A trace width calculator can help you determine the right copper thickness for a given conductor. It also enables you to calculate the maximum temperature rise and the current capacity of a trace. This information can be used to determine a proper trace width for your project.

A good fabrication process is essential for the integrity of Heavy copper power PCBs. This involves etching and plating to ensure the copper has adequate thickness. It is also important to choose the right substrate material for the job. The substrate should be suitable for the copper’s coefficient of expansion and have a high thermal stability.

While the increased thickness of Heavy copper PCBs can cause manufacturing challenges, it is possible to overcome these problems with proper design and manufacturing procedures. In addition, it is possible to mix standard features with heavy copper on the same board. This can reduce the number of layers, improve manufacturing efficiency, and save production costs.

Thermal management

When designing a circuit board with heavy copper, it is important to take into account the thermal management. The circuit board should be able to dissipate heat efficiently and maintain stability under various conditions. This can be accomplished by using a variety of methods, including the use of blind micro vias, power-ground pads, and cooling fans.

In addition, the current-carrying capacity Heavy Copper Power PCB Supplier of the circuit board should be sufficient for its intended use. For this reason, designers should consider the number of layers and current requirements before selecting a material. The choice of a dielectric material is also important, and can help reduce the potential for cracks in the circuit board.

Heavy copper PCBs offer enhanced thermal performance and a higher resistance to vibration and shock. They are ideally suited for aerospace applications, where the circuit boards must be able to operate reliably in harsh environments. This includes high temperatures and humidity. Heavy copper PCBs are also able to withstand high levels of mechanical stress, making them ideal for defense applications.

One advantage of heavy copper power PCBs is the ability to incorporate both low and high-power electronics on a single PCB. This technology can simplify the design of a circuit board, reducing its size and cost. In addition, it can eliminate the need for large heat sinks.

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