The CVD Silicon Carbide (SiC) Electrode is a high-performance
semiconductor chamber component engineered for plasma etching,
PECVD, ICP, and advanced wafer processing systems. Manufactured
from high-purity Chemical Vapor Deposition (CVD) Silicon Carbide,
the electrode delivers exceptional plasma erosion resistance,
thermal stability, and long-term electrical consistency in
aggressive semiconductor environments.
Compared with conventional silicon electrodes, CVD SiC electrodes
provide significantly improved operational lifetime, lower particle
generation, and superior resistance to fluorine- and chlorine-based
plasma chemistries. These advantages make them an ideal solution
for advanced semiconductor fabs requiring stable,
contamination-controlled, and high-throughput processing.
Designed for harsh plasma applications, SiC electrodes maintain
stable electrical and thermal characteristics during prolonged
processing cycles, helping improve process repeatability, chamber
uptime, and wafer yield.
Why CVD SiC Electrodes Are Used in Semiconductor Plasma Systems
In semiconductor plasma chambers, electrodes are essential for:
- Plasma generation and stabilization
- RF energy transmission
- Electric field control
- Gas distribution uniformity
- Process repeatability
Under high-energy plasma exposure, conventional silicon electrodes
gradually suffer from:
- Plasma erosion
- Surface degradation
- Particle shedding
- Thermal deformation
- Electrical drift
CVD SiC electrodes overcome these limitations through their dense
crystal structure, high purity, and outstanding corrosion
resistance.
Key Advantages of CVD Silicon Carbide Electrodes
Exceptional Plasma Resistance
CVD SiC demonstrates excellent resistance to fluorine-based and
chlorine-based plasma chemistries including:
This significantly reduces electrode erosion and extends
operational lifetime under continuous plasma exposure.
Ultra-Long Service Life
Compared with traditional silicon electrodes, SiC electrodes can
typically achieve:
- 3–10× longer service life
- Reduced maintenance intervals
- Lower chamber downtime
- Improved equipment utilization
Low Particle Generation
The dense CVD SiC structure minimizes micro-flaking and surface
degradation, reducing contamination risk and helping improve
semiconductor yield performance.
High Thermal Conductivity
Excellent heat dissipation capability helps:
- Stabilize chamber temperature
- Reduce thermal stress
- Improve plasma uniformity
- Maintain process consistency
Stable Electrical Performance
SiC electrodes maintain stable resistivity and RF characteristics
over long production cycles, helping ensure consistent plasma
behavior and repeatable wafer processing.
Precision Semiconductor-Grade Machining
Electrodes are manufactured with high dimensional accuracy and
customizable gas distribution patterns to support advanced
semiconductor integration requirements.
Technical Specifications
| Parameter | Specification |
|---|
| Material | CVD Silicon Carbide (SiC) |
| Purity | ≥ 99.9% |
| Density | ≥ 3.1 g/cm³ |
| Maximum Diameter | Up to 330 mm |
| Thickness | Customizable |
| Thermal Conductivity | 120–200 W/m·K |
| Surface Roughness | Ra ≤ 1.6 μm |
| Machining Precision | < 10 μm |
| Hardness | ~9.2 Mohs |
| Operating Temperature | >1000°C (process dependent) |
| Surface Finish | Ground / Polished Optional |
| Gas Hole Diameter | Customizable |
| Resistivity Options | Low / Medium / High Resistivity Available |
Semiconductor Applications
Plasma Etching Systems
Widely used in ICP and RIE plasma etching chambers requiring high
plasma resistance and stable RF performance.
CVD & PECVD Equipment
Suitable for deposition systems operating under high-temperature
and corrosive gas conditions.
High-Power Plasma Chambers
Excellent durability for long-cycle plasma processing applications.
Wafer Surface Treatment
Used in surface activation, cleaning, modification, and advanced
semiconductor processing steps.
Advanced Semiconductor Manufacturing
Compatible with high-throughput semiconductor production lines and
advanced process nodes.
Advantages Compared with Silicon Electrodes
| Feature | CVD SiC Electrode | Conventional Silicon Electrode |
|---|
| Plasma Resistance | Excellent | Moderate |
| Service Life | Very Long | Shorter |
| Particle Generation | Very Low | Higher |
| Thermal Stability | Excellent | Moderate |
| Corrosion Resistance | Outstanding | Limited |
| Process Stability | High | Moderate |
| Maintenance Frequency | Low | Higher |
Customization Options
Custom semiconductor-grade SiC electrodes are available with:
- Customized dimensions
- RF resistivity control
- Gas distribution hole patterns
- Surface finishing
- Mounting structures
- Cooling channel design
- Edge profile optimization
OEM and drawing-based manufacturing are supported.
Product Benefits for Semiconductor Fabs
✔ Extended chamber component lifetime
✔ Reduced consumable replacement frequency
✔ Lower particle contamination risk
✔ Improved wafer yield stability
✔ Reduced maintenance downtime
✔ Better plasma process consistency
✔ Suitable for aggressive fluorine plasma environments
FAQ
Q1: Is the SiC electrode considered a consumable part?
Yes. SiC electrodes are semiconductor consumable components, but
their lifetime is significantly longer than conventional silicon
electrodes.
Q2: Why is CVD SiC preferred for plasma chambers?
CVD SiC provides superior plasma erosion resistance, excellent
chemical stability, and low particle generation under aggressive
semiconductor processing conditions.
Q3: Can the electrode design be customized?
Yes. Diameter, thickness, resistivity, gas hole layout, mounting
structure, and surface finish can all be customized according to
chamber requirements.
Q4: What plasma processes are suitable for SiC electrodes?
They are widely used in:
- ICP etching
- RIE systems
- PECVD
- Plasma cleaning
- Surface treatment
- Advanced wafer fabrication processes
Related Product
Precision Silicon Ring (Single Crystal / Polycrystalline) for
Semiconductor Plasma Etching Systems
