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# Fr4 thermal conductivity

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Fr4 thermal conductivity

Fr4 thermal conductivity is very Low, compare with Aluminum PCB,
Fr4 thermal conductivity is around 0.25W/m.k

Aluminum PCB thermal conductivity Min. 0.8 w/m.k

However, some LED lights, because the need for withstand voltage, the need for better
withstand voltage with the better material,

Many LED manufacturers Had to choose FR4 material for the better withstand voltage.

In fact, there is a material, high thermal conductivity CEM-3 thermal conductivity is 1.0 W / m.k,
Both to meet the volatage requirements, but also to meet the thermal requirements, is the best choice.

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