LED PCB materials: compare the complete constructionCopper spreads heat; the insulation and interfaces determine how it reaches the cooling surface.LED PCB materials: compare the complete constructionCopper spreads heat; the insulation and interfaces determine how it reaches the cooling surface.
FR-4 with thermal viasInsulated metal substrateCeramic substrate
FR-4Review via location, solderwicking and the path to a sink.
Thermal dielectricAluminum / copper baseBase conductivity ≠dielectricconductivity ≠board thermal R.
Alumina / AlNSpecify ceramic grade andmetallization / bonding route.
³Ô¹Ïtv engineering illustration • simplified, not a production cross-section or measured thermal field