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Thick copper PCB/heAVY COPPER PCB

What is Heavy Copper PCB or Thick Copper PCB?

Usually, the copper thickness of a standard PCB is in the range of 1OZ to 3 OZ. Heavy copper PCBs or thick copper pcb are the types of PCBs that the finished copper weight is greater than or equal to 3oz (105μm).These PCBs are used for large current outputs and optimization of thermal management. The thick copper allows large PCB-cross-sections for high current loads and encourages heat dissipation. With this PCB technology it is also possible to combine fine layout structures on the outer layers and thick copper layers in the inner layers.

What is The Difference Detween Copper PCB and Heavy Copper PCB?

Copper pcb and heavy copper pcb seem to have similar names, and people tend to think that the two are the same PCB. But in fact, the two refer to different things. The following JHDPCB will introduce the difference between the copper pcb and heavy copper pcb in detail.

Copper PCB: Copper pcb refers to a copper-based PCB. The use of copper as the substrate is to better dissipate heat and prolong the life of components on the PCB. The copper substrate is to allow the heat to be quickly transferred from the PCB to the outside, such as a heat sink or a metal case, etc. Because the thermal conductivity of copper is several times that of aluminum or other metals, up to 401 W/M.K

Heavy copper PCB: Heavy copper PCB or thick copper PCB refers to the PCB with copper thickness exceeding 3OZ. The substrate can be aluminum, copper can also be fr4. Thick copper is to allow the PCB to carry a large current. Please note that the thick copper mentioned here does not refer to the thickness of the PCB, but the thickness of the copper foil on the PCB. Both aluminum PCB and FR4 PCB can be thickened for copper foil.

What is the relationship between current and copper thickness and line width?

We have introduced the thick copper plate above. When do the heavy copper pcb design, the appropriate copper thickness and current should be selected according to the size of the carrying current. So what is the relationship between the current and the copper thickness and line width? The following JHDPCB summarizes a table for reference when designing thick copper pcb.

What are the advantages of heavy copper pcb?

The construction of pcb heavy copper gives the PCBs the following advantages:

1.     It can carry larger current with the same line width.
2.    Reduce the heat generated by the circuit.
3.    Ensure that the PCB has better heat dissipation performance, the larger the copper thickness, the faster the heat from the components is transferred to the substrate.
4.    Improve the mechanical strength of the PCB.
5.    Reduce the size of end-use products.

After years of accumulation of PCB production technology, JHDPCB can produce th heavy copper pcb with an inner layer copper thickness of 0.5oz-4oz and an outer layer copper thickness of 3oz-8oz. So if you need heavy copper PCB, we will be your reliable partner.

What are the properties and characteristics of heavy copper pcb?

  • Thick copper PCB has the best elongation performance and is not limited by the processing temperature.
  • It can be used in hot melt welding methods such as oxygen blowing at a high melting point and not brittle at low temperatures. Even in extremely corrosive atmospheric environments, copper weight PCB forms a strong, non-toxic passivation protective layer.
  • Its conductive materials, substrate materials, production process, application fields are different from the standard PCBs. The plating of thick copper circuits allows heavy copper PCB manufacturers to increase the copper weight in via sidewalls and plated holes, which can reduce the layer numbers and footprints.
  • Thick-copper plating integrates high-current and control circuits, making high-density with simple board structures can be achieved.

About the application of heavy copper PCB.

With the rapid development of science and technology, electronic products are becoming more and more miniaturized. Because the thick copper pcb has the characteristics of being able to carry large current and good heat dissipation. It is suitable for use in electronic products with multiple functions and miniature volume, so the demand for thick copper plates is also increasing. Heavy copper pcbs are widely used in power supply, aerospace, military, automotive and high-power LED lighting.