Applications
CVD diamond films/membrane/foil for electronic components electric circuits
CVD diamond films are among the most advanced materials for thermal management in high-power and high-density electronics. Their value as heat spreaders comes from a unique combination of physical and chemical properties that few materials can match.
Key Advantages of CVD Diamond Heat Spreaders
1. Exceptional Thermal Conductivity
CVD diamond exhibits thermal conductivity in the range of 1200–2200 W/m·K, exceeding copper (~400 W/m·K) and even high-end graphite. Heat transport is dominated by lattice vibrations (phonons), making it highly efficient and stable across a wide temperature range.
This is governed by the phonon transport mechanism in the diamond lattice.
2. Electrical Insulation
Unlike metals, diamond is electrically insulating (wide bandgap ~5.5 eV), which allows:
Direct integration with semiconductor devices
Elimination of additional insulating layers
Reduced parasitic capacitance
3. Low Thermal Expansion
Diamond has a very low coefficient of thermal expansion (~1 ppm/K), which is close to:
This minimizes thermal stress and improves reliability in power cycling environments.
4. High Thermal Stability & Chemical Inertness
Stable up to ~700–800°C in air
Resistant to corrosion and radiation
Ideal for harsh environments (space, nuclear, plasma systems)
5. High Breakdown Strength
Useful in high-voltage applications where insulation and thermal dissipation must coexist.
6. Tailorable via Doping or Composite Integration
Can be doped (e.g., boron-doped diamond) for semi-conductive behavior
Can be metallized (Ti, Mo, W layers) for better interface bonding
Typical Applications
1. Power Electronics
Used as heat spreaders or substrates for:
Enables higher power density, reduced junction temperature, and longer device lifetime.
2. RF & Microwave Devices
Critical in high-frequency, high-power systems:
Radar modules
Satellite communications
5G/6G base stations
Diamond improves thermal handling in GaN-on-diamond architectures.
3. Laser Diodes & Photonics
Used in:
Industrial lasers
Medical lasers
Defense systems
4. Advanced Packaging & 3D Integration
Especially important as power densities exceed 1 kW/cm².
5. Aerospace & Defense
Thermal management in satellites and avionics
Radiation-resistant electronics
High-power microwave tubes (e.g., gyrotrons)
6. Emerging Applications
AI accelerators and high-performance computing (HPC)
Electric vehicle power modules
Fusion and EUV lithography systems
SEMIXICON DIASEMI standard diamond films models in bulk supply
SEMIXICON DIASEMI CVD Diamond Thin Film Standard Products
Dimensions Thickness PART NUMBER
Thermal Grade Optical Grade
5x5 0.254 DS1000-050525 DS2000-050525
5x5 0.381 DS1000-050538 DS2000-050538
5x5 0.508 DS1000-050550 DS2000-050550
5x5 0.635 DS1000-050563 DS2000-050563
10x10 0.254 DS1000-101025 DS2000-101025
10x10 0.381 DS1000-101038 DS2000-101038
10x10 0.508 DS1000-101050 DS2000-101050
10x10 0.635 DS1000-101065 DS2000-101065
15x15 0.254 DS1000-151525 DS2000-151525
15x15 0.381 DS1000-151538 DS2000-151538
15x15 0.508 DS1000-151550 DS2000-151550
15x15 0.635 DS1000-151563 DS2000-151565
20x20 0.254 DS1000-202025 DS2000-202025
20x20 0.381 DS1000-202038 DS2000-202038
20x20 0.508 DS1000-202050 DS2000-202050
20x20 0.635 DS1000-202063 DS2000-202063
25x25 0.254 DS1000-252525 DS2000-252525
25x25 0.381 DS1000-252538 DS2000-252538
25x25 0.508 DS1000-252550 DS2000-252550
25x25 0.635 DS1000-252563 DS2000-252563
30x30 0.254 DS1000-303025 DS2000-303025
30x30 0.381 DS1000-303038 DS2000-303038
30x30 0.508 DS1000-303050 DS2000-303050
30x30 0.635 DS1000-303063 DS2000-303063
40x40 0.254 DS1000-404025 DS2000-404025
40x40 0.381 DS1000-404038 DS2000-404038
40x40 0.508 DS1000-404050 DS2000-404050
40x40 0.635 DS1000-404063 DS2000-404063
50x50 0.254 DS1000-505025 DS2000-505025
50x50 0.381 DS1000-505038 DS2000-505038
50x50 0.508 DS1000-505050 DS2000-505050
50x50 0.635 DS1000-505063 DS2000-505063
Φ5 0.254 DS1000-R00525 DS2000-R00525
Φ5 0.381 DS1000-R00538 DS2000-R00538
Φ5 0.508 DS1000-R00550 DS2000-R00550
Φ5 0.635 DS1000-R00563 DS2000-R00563
Φ10 0.254 DS1000-R01025 DS2000-R01025
Φ10 0.381 DS1000-R01038 DS2000-R01038
Φ10 0.508 DS1000-R01050 DS2000-R01050
Φ10 0.635 DS1000-R01063 DS2000-R01063
Φ15 0.254 DS1000-R01525 DS2000-R01525
Φ15 0.381 DS1000-R01538 DS2000-R01538
Φ15 0.508 DS1000-R01550 DS2000-R01550
Φ15 0.635 DS1000-R01563 DS2000-R01563
Φ20 0.254 DS1000-R02025 DS2000-R02025
Φ20 0.381 DS1000-R02038 DS2000-R02038
Φ20 0.508 DS1000-R02050 DS2000-R02050
Φ20 0.635 DS1000-R02063 DS2000-R02063
Φ25 0.254 DS1000-R02525 DS2000-R02525
Φ25 0.381 DS1000-R02538 DS2000-R02538
Φ25 0.508 DS1000-R02550 DS2000-R02550
Φ25 0.635 DS1000-R02563 DS2000-R02563
Φ50 0.254 DS1000-R05025 DS2000-R05025
Φ50 0.381 DS1000-R05038 DS2000-R05038
Φ50 0.508 DS1000-R05050 DS2000-R05050
Φ50 0.635 DS1000-R05063 DS2000-R05063
Φ65 0.254 DS1000-R06525 DS2000-R06525
Φ65 0.381 DS1000-R06538 DS2000-R06538
Φ65 0.508 DS1000-R06550 DS2000-R06550
Φ65 0.635 DS1000-R06563 DS2000-R06563
Φ70 0.254 DS1000-R07025 DS2000-R07025
Φ70 0.381 DS1000-R07038 DS2000-R07038
Φ70 0.508 DS1000-R07050 DS2000-R07050
Φ70 0.635 DS1000-R07063 DS2000-R07063
Φ100 0.254 DS1000-R10025 DS2000-R10025
Φ100 0.381 DS1000-R10038 DS2000-R10038
Φ100 0.508 DS1000-R10050 DS2000-R10050
Φ100 0.635 DS1000-R10063 DS2000-R10063
Φ120 0.254 DS1000-R12025 DS2000-R12025
Φ120 0.381 DS1000-R12038 DS2000-R12038
Φ120 0.508 DS1000-R12050 DS2000-R12050
Φ120 0.635 DS1000-R12063 DS2000-R12063
Φ150 0.254 DS1000-R15025 DS2000-R15025
Φ150 0.381 DS1000-R15038 DS2000-R15038
Φ150 0.508 DS1000-R15050 DS2000-R15050
Φ150 0.635 DS1000-R15063 DS2000-R15063
