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What is Copper Clad in PCB?

Copper cladding refers to the conductive copper layer on the PCB substrate, which is important for achieving electrical connections on the PCB. Without copper cladding, the PCB is just an inert insulating material.
What is Copper Clad in PCB?
21 December 2024
Views: 36
Copper cladding refers to the conductive copper layer on the PCB substrate, which is important for achieving electrical connections on the PCB. Without copper cladding, the PCB is just an inert insulating material.

What is Copper Clad?

Copper cladding is the process of covering the surface of a PCB with a thin layer of copper, which acts as a conductive path for signals and electricity to flow between the various components of the circuit. Copper is applied during the PCB manufacturing process and is etched to form the necessary circuit traces and patterns.

Copper cladding is not limited to the visible outer layers of the PCB, but is also found in the inner layers of multi-layer PCBs, allowing for more complex and compact designs. Each copper layer is separated by an insulating material called a dielectric to prevent interference between layers.

Types of Copper Clad

1. Full Copper Clad
The entire surface of the PCB substrate is covered with copper, which is then etched away in specific areas to form the required circuit traces. It is commonly used in single-layer and double-layer PCBs.

2. Ground Plane
The ground plane is a large continuous copper area on the PCB that serves as a common ground for the circuit. Helps reduce noise and improve stability.

3. Power plane
Similar to the ground plane, the power plane is a large copper area dedicated to transferring power to various components on the PCB.

4. Copper fill
Copper fill is to fill the unused area of ​​the PCB with copper. It can be connected to the ground. Copper fill helps to dissipate heat and reduce etching costs.

Conclusion
Copper fill is the key to the PCB's ability to have conductive lines. From simple single-layer boards to complex multi-layer designs, copper fill ensures the basic function of the PCB.
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