Skip to content

What Is 0.5 OZ PCB ?

The printed circuit board is a flexible element used across various industries. Its acceptance cuts across the technology and the electronic industry due to its unique attributes. Its copper density is a crucial factor in fabricating a standard PCB. The conductivity role played by the copper is essential to the Printed circuit board.

The Printed circuit board depends on electricity to carry out its infinite functions. The nominal circuits in the board are the pathways by which electric currents move from one place to another without hitches. Copper is a standard carrier due to its conductive nature.

The copper performs well as a high conductive component. It is possible due to the valence electron it possesses. Electrons convey electrical signals that form the foundational particles which hold electrical charges. The copper density carries the electrical signals without ditching electricity.

Furthermore, Copper density is also known as copper thickness or copper weight. It is in the sq ft. area of the circuit board. The Coppers’ measurement is in ounces (oz/ft₂). Its thickness determines the current-carrying strength of the whole Printed circuit board.

Making a wrong choice of copper density during the PCB designing process could ruin the performance of the PCB. Thus, understanding the connection between signal conductance and copper weight is crucial. It would help make the right choice of copper density for the PCB.

The thickness includes 0.5 oz copper thickness, 1.0 oz/sq ft copper thickness, and other types of density measurements available. Going through this article will help deepen your knowledge of PCB copper density. It will also supply adequate information on various copper densities.

Copper Density Measurements

Copper is one of the essential components of a printed circuit board as a great conductor. Choosing the perfect copper weight type during the fabricating process helps avoid issues that could affect the functionality of the PCB. The copper is a strong basis on which the PCB thrives. It serves as the connector of every component around the circuit.

Electronic designers mostly relegate components such as the PCB copper weight and the board thickness to the background. The copper density adds to the whole thickness of the external layers of the PCB. Its importance is significant to fabricating a standard PCB.

The copper density or weight are of three different specifications. Each classification has its analytical role in the PCB manufacturing process. As a very strong conductor of current, its measurement is in ounces per square foot.

Classification of the Copper Density

Standard Copper Weight

This copper specification ranges from ¼, ½, 0.5.oz per sq ft to 4 ounces per square foot. It has been the measurement in use for a very long time. Using this type of copper density reduces the risk of failure in the printed circuit board.

Heavy Copper Density

The weight for this kind of copper density ranges between 5 to 19 ounces per square foot. The heavy copper surpasses the standard copper in diversifying the PCB design. It offers more room for creativity and experiment.

Extreme Copper Density

This density weighs around 20 to 200 ounces per square foot. To fabricate long-term designs, designers choose an extreme copper density. It involves laying two copper densities on a single PCB layer. Also, it removes the need for several standard copper plates. It also enables designers to place a small quantity of extreme copper on the exterior layer of the board.

The extreme copper density on the PCB allows the carriage of more current. However, there are other copper densities available. They include:

What is 0.5oz PCB Copper?

Several PCB designs require specified copper density to meet the electrical current demands of the circuit. To choose an appropriate copper density to fit the design hinges on the type of PCB. The 0.5 oz copper thickness in mm is also called ½ oz copper thickness. It is the copper measurement type that forms part of a non-standard fabrication. It is obtainable in the inner layer of the design.

The 0.5 oz copper thickness approximates a piece less than 0.0007mm. It is an uncommon option for small products and appliances with less conductivity. The size of this copper type is a unique option among manufacturers. Its thin size exposes the design to overheating in contrast to other copper weights.

It is important to note, designs that require 0.5oz or 1.0oz’s electrical difference are trivial. The copper thickness in the circuit board does not have a standard measurement. Fabricators could choose the perfect fit for their design. It could be at 0.5oz/sq ft or 1.0oz/sq ft thickness.

The main difference between the copper thicknesses and other types is the direct current resistance. PCB with a high copper foil impacts the direct-current resistance on the planes and traces. Therefore, dispersing direct current around a large PCB, there could be a voltage drop.

Other Types of Copper Thickness

1 oz Copper PCB

It is the primary density for the printed circuit board. Having sufficient copper in the design secures a perfect working condition in the PCB. The 1 oz thickness is the standard copper density on the outer layer of the PCB. It is one of the most popular flex PCB copper weights.

2 Oz Copper

A 2 oz copper PCB is a design that has a copper weight per square foot at two ounces. It is the internal copper density of the inner layer in the PCB. It is on a 3oz complete copper selection. The 2 oz copper is perfect for appliances with bigger current demands.

3 and 4 Oz Copper

Fabricating a bulletproof PCB with high capacity requires heavy-weight copper. This type of copper density is highly reliable, and it has comparative advantages over the thinner copper types.


By now, you should have gained much knowledge about half oz PCB. Copper is an exceptional conductor, and it plays a crucial role in the fabricating process of the PCB. Therefore, choosing the perfect copper density to suit the application is essential. A wrong choice will deter the performance of the board design.