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Metal core PCB:Copper Weight in a PCB,Do You Know it?

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Popularity:537Dated :06-26-2021 03:10【big well Small

Copper is one of the most important elements in metal core PCB. Copper Weight or Copper Thickness in a metal core PCB represents the thickness of 1 ounce of copper rolled out over an area of 1 square foot. For example, a PCB that has a copper weight of 1 oz will have a layer of copper that is 1.4 mils in thickness. Copper Weight is measured in ounces per square foot (oz/ft²).

Copper Weight  in oz vs Copper Thickness in Mils

Cu Weight

Thickness in Mils

1 oz

1.4 mils

2 oz

2.8 mils

3 oz

4.2 mils

4 oz

5.6 mils

Why is Copper Weight Important for Printed Circuit Boards?

The current carrying capacity of a PCB depends on the thickness of the copper trace. So metal core PCB's with a higher Copper weight will be able to carry more current.

 

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