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Mar 5, 2019 at 11:04 comment added Uwe If it is a good bible of PCB design, there should be some sentences about the conditions when this formula is applicable. A large PCB filled with a high current coil with many windings would get much hotter than calculated.
Mar 4, 2019 at 22:12 comment added DerStrom8 @Uwe Source? You may be right, but the formula used above is what is called out in what can be considered THE bible of PCB design.
Mar 4, 2019 at 20:44 comment added Uwe That formula does not depend on trace length, but a long trace will get hotter than a very short one.
Mar 4, 2019 at 1:22 history answered DerStrom8 CC BY-SA 4.0