Diamond Ceramic Composite Thermal Management Material

Diamond Ceramic Composite Thermal Management Material

Diamond  ceramic is an advanced thermal management material engineered for high-power electronics such as GaN/SiC devices, AI processors, EV power modules, and RF systems. It combines ultra-high thermal conductivity diamond particles with a silicon carbide (SiC) ceramic matrix through strong covalent bonding, significantly reducing interfacial thermal resistance and enhancing reliability under thermal cycling.

With thermal conductivity ranging from 520 to 740 W/m·K (and up to >900 W/m·K with CVD diamond coating), this material outperforms traditional ceramics and rivals diamond-metal composites, while offering superior coefficient of thermal expansion (CTE ~2.0–2.4 ppm/K) closely matched to semiconductor materials. This minimizes thermal stress and improves device lifetime.

Unlike diamond-copper or diamond-aluminum composites, diamond composite ceramics provide intrinsic electrical insulation, high thermal stability, and resistance to delamination under cyclic loading. Their lower density and excellent specific thermal conductivity make them ideal for weight-sensitive and high-reliability applications.

The material supports flexible manufacturing, including large-area substrates, thin plates, and complex 3D geometries with high surface precision (Ra ≤ 50 nm). Optional metallization and surface engineering enable seamless integration into advanced packaging.

Applications include IGBT modules, RF amplifiers, data center cooling, 5G infrastructure, and laser systems, delivering improved heat dissipation, reduced energy consumption, and extended system lifespan.

Diasemi is working with top tier customers with innovative diamond /silicon carbide, diamond and glass etc composite to tackle the thermal challenges