Copper clad prototype board - copper thickness

The thickness of the copper on a prototype board is called out under the filter titled material. A common example of one of the options is “Copper Clad FR4, Single Sided, 1 oz.” The meaning of 1oz in that material description calls out the thickness of the copper foil.

1oz means a weight of 1oz of copper is evenly tiled in 1 square feet (ft2) of the area to achieve the thickness.
That is, 1 oz = 28.35 g / ft2
Copper density = 8.93 g / cm3
1 square feet = 929.03 cm2
Therefore, 1oz copper foil thickness = 28.35 / 8.93 / 929.03 ≈ 35um or 1.35 mil

General PCB thicknesses includes these dimensions 1/2 oz = (17.5um) , 1oz = (35um) , 2oz = (70um) , and 3oz =(105um)

On our website we just list the board thickness which is the total thickness of both the copper foil and the FR4 which is the glass reinforced epoxy laminate.

Prototype Boards Unperforated | Electronic Components Distributor DigiKey

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