Comparative Literature & World Literature

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#1 2021-01-09 09:34:16

Registered: 2020-05-24
Posts: 596



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I have a question regarding thermal dissipation of PCB using copper surface. I have seen couple LED PCBs used FR4 board and top and bottom surface were field with 2oz copper. It was copper trace, but it covered entire circuit board. I thought I understand heat sink application, but I don't get how the thin 2oz copper trace on FR4 board works as a heat sink. knowing 2oz copper is about 70um which is really thin as compared to FR4 1.6mm board.


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