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Home / Blogs / Why use thick copper PCBs?What are the advantage of thick copper PCBs?

Why use thick copper PCBs?What are the advantage of thick copper PCBs?

ByGrace September 9, 2025September 9, 2025

Today, we’ll discuss what thick copper PCBs are,what the thickness of 5oz copper is ,and the design elements of a 5 oz PCB.Do you know what thick copper PCBs are?In this areticle,we’ll provide a basic and advanced understanding of thick copper printed circuit boards,Reading this ariticle is essential before you proceed with importing or manufacturing thick copper PCBs.It will make you an expert in this filed.Before we get into the detail,let’s first understand what a PCB is.

What is a PCB?

PCB stands for printed circuit board.It secures electrical component to a platform,providing both electrical connections and structural support.

Printed circuit board reduce wiring complexity while increasing circuit reliability,This allows for the creation of large circuits and the connection of numerous electronic components with diverse functions.

printed circuit board also eliminate the complexity of wiring.They achieve this by internally connecting components through etched conductive paths or traces.

PCBs are widely used in a variety of electrical devices,such as industrial machinery,medical equipment,the automotive industry,lighting equipment,and appliances across various industries.

What does a thick copper PCB mean?

Thick copper printed circuit boards contain over three ounces of copper per square foot and are designed to carry high current load.

You’ll find copper thicknesses in this type of PCB ranging from 105 to 400µm. Furthermore, thick copper PCBs are able to maintain high heat dissipation while providing stronger connections.

Furthermore,this thermal management feature ensure that thick copper PCBs are immune to thermal stress.

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What is the thickness of 5oz copper?

In the printed circuit board industry, one method of expressing the thickness of copper on a printed circuit boars is in ounces(oz),Now,the question arises-why is weight used when specifying thickness?Good question.

Now, if 1 ounce (approximately 28.35 grams) of copper is flattened to cover a surface area of ​​1 square foot (0.093 square meters), the resulting thickness is 1.37 mils, or 0.00348 mm. Therefore, for a 5oz PCB, you should expect a thickness of 6.85 mils, or 0.1740 mm.

Benefits of Using 5oz PCBs

There are some benefits to using 5oz thick copper PCBs. This allows you to use thick copper printed circuit boards in certain applications.

Helps conduct large amount of current

Thanks to this feature,thick copper PCBs can be used in machinery or equipment with high current capabilities,such as heavy machinery used in industry.

Dissipates Heat Impressively

5oz PCBs are highly efficient at managing thermal energy,ensuring reliable performance.They will operate normally at high temperatures,and you won’t notice any slcak in their performance levels. Furthermore,this feature makes them suitable for any high-powered equipment and machinery.

High Mechanical Strength

5oz PCBs 5oz PCBs are highly efficient at managing thermal energy, ensuring reliable performance. They will operate normally at high temperatures, and you won’t notice any slack in their performance levels. Furthermore, this feature makes them suitable for any high-powered equipment and machinery.

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High Mechanical Strength

5oz PCBs provide a strong base support for their components, making them functionally reliable and robust. This means they provide a good support structure.

It is highly compatible with some other materials

During the PCB manufacturing process, other materials can be used in the manufacturing process. Using different materials can lead to compatibility issues, which can cause these components to malfunction. However, these failures are reduced when using 5oz PCBs. This is due to the 5oz PCB’s high compatibility with different materials.

Design Elements of 5oz PCBs

When it comes to managing heat generated during a process, 5oz PCBs can be a very effective option. This is because a 5oz PCB can handle a large amount of current and still safely dissipate excess heat.

Furthermore, you’ll find that your 5oz design must take into account the needs of your application. Therefore, the following are design elements you must emphasize.

Component Spacing on the PCB

Required PCB Size

Types of Components You Should Include on the PCB.

5oz PCB Fabrication Process

You can manufacture a 5oz PCB by applying a copper layer to the substrate.

Since copper is known to be conductive, you’ll create a path sufficient to carry current between components.

For your application, before beginning the manufacturing process, you must consider design elements such as component type, spacing, and size.

There are two main methods for manufacturing 5oz PCBs.

Etching

This process involves cutting a pattern into a specific surface before highlighting it. In this case, you pattern the conductive path design onto the substrate. This cut pattern is then filled with molten copper.

Electroplating

This involves depositing a material onto the surface. You also apply this process when manufacturing 5oz PCBs. Here, you deposit copper onto the substrate according to the conductive path design.

For these processes, you perform them on the substrate. This is achieved by using sidewalls and holes created using a printed screen.

Designing Your 5oz PCB

It is possible to design a 5oz PCB. This can be accomplished using computer-aided software. You’ll find this software easy to use in both industrial labs and academic halls. This allows you to meticulously develop your desired PCB design.

This software can be web-based or operating system-based. It can be used to design circuit diagrams and edit them schematically. Some software also offers simulation capabilities, allowing users to export and import desired features into the PCB layout.

Furthermore, some allow for 3D design visualization, allowing you to incorporate all the components of the circuit into your design. You can achieve all of this from anywhere, as the software supports various languages.

Conclusion

You can produce 5oz PCBs through either electroplating or etching. These thick copper PCBs also offer various advantages, making them highly sought after. Due to their considerable advantages and features, 5oz PCBs are sure to meet your electrical needs and requirements.

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Post Tags: #aluminum clad pcb#aluminum core pcb#aluminum pcb#assemble pcb

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