Silicon Carbide (SiC) Trays & Plates: High-Performance Wafer Holders for ICP Etching in LED Manufacturing
Silicon Carbide (SiC) trays and plates are precision-engineered wafer carriers designed specifically for Inductively Coupled Plasma (ICP) etching processes within the LED industry. SiC stands out as a superior material due to its exceptional thermal management, outstanding corrosion resistance, and remarkable mechanical stability at extreme temperatures.
Key Material Advantages
- Superior Thermal Conductivity: For efficient heat dissipation and uniform temperature distribution across the wafer
- Exceptional Plasma & Corrosion Resistance: Withstands harsh chemical environments and plasma shock for extended service life
- High Mechanical Strength at Elevated Temperatures: Maintains structural integrity and dimensional stability under high thermal loads
- Low Thermal Expansion: Minimizes the risk of warping or stress on wafers during thermal cycling
Silicon Carbide (SiC) Material Properties
| Property |
Value |
| Compound Formula |
SiC |
| Molecular Weight |
40.1 |
| Appearance |
Black |
| Melting Point |
2,730 °C (decomposes) |
| Density |
3.0 - 3.2 g/cm³ |
| Electrical Resistivity |
1 - 4 x 10¹ Ω*m |
| Poisson's Ratio |
0.15 - 0.21 |
| Specific Heat |
670 - 1180 J/kg*K |
Comparative Specifications: SiC Tray Types
| Type |
Recrystallized SiC |
Sintered SiC |
Reaction Bonded SiC |
| Purity |
> 99.5% |
> 98% |
> 88% |
| Max. Working Temp. |
1650 °C |
1550 °C |
1300 °C |
| Bulk Density (g/cm³) |
2.7 |
3.1 |
> 3.0 |
| Apparent Porosity |
< 15% |
< 2.5% |
< 0.1% |
| Flexural Strength (MPa) |
110 |
400 |
380 |
| Compressive Strength (MPa) |
> 300 |
2200 |
2100 |
| Thermal Expansion (10⁻⁶/°C) |
4.6 (at 1200°C) |
4.0 (at <500°C) |
4.4 (at <500°C) |
| Thermal Conductivity (W/m*K) |
35 - 36 |
110 |
65 |
| Primary Characteristics |
High-Temperature Resistance, High Purity |
High Fracture Toughness |
Excellent Chemical Resistance |
Critical Features for ICP Etching
- Excellent Thermal Conductivity: Ensures rapid heat transfer and minimizes thermal gradients
- Superior Resistance to Plasma Shock: Guarantees long-term durability and process consistency
- Excellent Temperature Uniformity: Critical for achieving uniform etch rates and high device performance across the entire wafer
Primary Applications
- Semiconductor Processing: Ideal as wafer carriers, susceptors, and process fixtures in CVD, MOCVD, and epitaxy
- LED Manufacturing: Widely used as robust and reliable wafer holders for ICP etching processes in the production of Light-Emitting Diodes
- Advanced Coatings & Components: Suitable for various industrial applications requiring high thermal and chemical stability
We supply a comprehensive range of standard and custom-sized Silicon Carbide trays, plates, and other specialized SiC components to meet the precise needs of the semiconductor and LED industries.