B2B marketplace · Technology-grade grown diamond
B2B marketplace · Technology-grade grown diamond
Diamond spreads heat away from high-power RF electronics, diode laser arrays and AI computing hardware.
01
In modern high-density microelectronics, tech-grade synthetic diamond functions as a passive heat spreader, submount, or direct carrier substrate integrated between microelectronic dies and primary cooling systems. It is deployed in localized thermal hotspots across high-power RF electronics (such as GaN-on-diamond transistors), high-power diode laser arrays, optical communication transceivers, and AI computing hardware. By acting as an intermediate thermal bridge directly beneath active semiconductor junctions, diamond rapidly extracts concentrated, localized heat and spreads it laterally across a significantly larger surface area. This prevents thermal throttling, mitigates thermal expansion stress, and allows heat sinks or liquid cold plates to dissipate energy far more efficiently.
02
Diamond provides the ultimate thermal management solution because it possesses the highest room-temperature thermal conductivity of any bulk material—reaching up to 2,200 W/m·K, which is more than five times that of copper and over ten times that of silicon carbide or aluminum nitride. Unlike copper, diamond achieves this heat transfer through phonon vibrations across its rigid carbon crystal lattice while remaining an electrical insulator with a low dielectric constant and low thermal expansion matching wide-bandgap semiconductors. By dropping operating junction temperatures by 20°C to 50°C or more, diamond heat spreaders double to quadruple device lifespans, enable drastically higher power density on smaller footprints, and reduce or eliminate bulky auxiliary cooling equipment.
03
Thermal applications predominantly utilize Chemical Vapor Deposition (CVD) grown polycrystalline or single-crystal diamond plates, wafers, and singulated heat spreaders. Polycrystalline CVD (pCVD) diamond serves as the primary industrial standard, manufactured in thermal conductivity grades ranging from 1,000 W/m·K to 2,000 W/m·K and available in wafer diameters up to 100–150 mm with thicknesses from 100 µm to 2,000 µm. For hyper-critical power densities requiring maximum isotropic conductivity, single-crystal CVD (scCVD) diamond offers thermal conductivities exceeding 2,000 W/m·K. Crucially, thermal-grade CVD diamond requires atomic-level surface polishing (Ra < 1 nm) to minimize thermal barrier resistance, alongside customized thin-film metallization coatings (such as Ti/Pt/Au or Cr/Ni/Au) to facilitate direct die bonding and eutectic soldering.
Key figure
Up to 2,200 W/m·K
Highest room-temperature thermal conductivity of any bulk material, more than five times that of copper
Source it on LattiSpec
Browse technology-grade diamond material and components from verified sellers.
Applications
Nitrogen-vacancy centers in diamond work as quantum sensors at room temperature, with no cryogenics.
Diamond windows transmit multi-kilowatt and megawatt laser beams without warping, burning or cracking.
An ultra-wide bandgap semiconductor for higher voltages, faster switching and less energy loss.
Get started
Browse verified listings from sellers worldwide, or apply to reach engineers and procurement teams.
LattiSpec Curator
Live
