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Aluminum PCB VS FR4

Aluminum PCB Versus FR4

● As below picture,Aluminum PCB bottom layer is aluminum,FR4 PCB bottom layer is copper.Aluminum dissipation is better than copper.So aluminum PCB dissipation is dramatically superior to standard FR-4 constructions.

● Aluminum price is lower than copper.So Aluminum PCB price is lower than FR4 PCB.

● Aluminum substrate is usually one side.But FR4 can do double sides.

● FR4 dissipation is lower compared to Aluminum,so FR4 is only suitable for low current application.Aluminum PCB can go to high current because of better dissipation.

● Aluminum PCB can be large current,so it’s not safe enough.For special application,we still need to consider to use FR4.