Material System:
SSiC / RBSiC / Optional CVD SiC Coating
Key Properties:
High stiffness, low thermal expansion, good thermal conductivity, precision flatness control, and low-contamination surface options.
Applications:
Wafer handling and support, CVD/LPCVD equipment, diffusion furnaces, high-temperature thermal processing, and semiconductor process equipment.
Processing Focus:
Deformation control for large or thin-wall structures, precision flatness of critical support surfaces, controlled wafer-contact surface finishing, and prevention of chipping and microcracks during SiC machining.
Manufacturing Process:
Material Preparation → Forming / Sintering → Precision Machining → Grinding / Polishing → Dimensional & Flatness Inspection → Cleaning & Packaging
Typical Lead Time:
35–45 Days
Customization:
Tray dimensions, support geometry, holes, slots, flatness, and surface requirements can be customized according to customer drawings. Engineering prototypes, small-batch qualification, and repeat production are supported.
The Silicon Carbide Semiconductor Wafer Support Tray is a precision ceramic component designed to support and carry wafers during semiconductor processing. Manufactured from SSiC, RBSiC, or SiC with optional CVD SiC coating, this silicon carbide wafer support tray provides a stable platform for wafer handling, deposition, thermal processing, and cleanroom equipment. Controlled flatness and wafer-contact surfaces help reduce wafer movement, thermal distortion, contamination risk, and backside scratching during processing.
A wafer support tray is not simply selected by material name. Different semiconductor processes require different levels of temperature resistance, dimensional stability, cleanliness, and structural complexity. For this reason, the SiC material system should be selected according to the actual equipment and process conditions.
A SSiC wafer support tray is suitable for applications where high-temperature stability, stiffness, and dimensional control are important. Sintered silicon carbide has low thermal expansion and no residual free silicon, making it well suited to precision wafer support components exposed to repeated heating and cooling cycles.
A RBSiC wafer support tray can be a practical choice for larger sizes or more complex structures. Reaction-bonded silicon carbide offers good rigidity and manufacturing flexibility for wafer carriers with holes, slots, support areas, recesses, or equipment-specific mounting features.
Because RBSiC contains residual silicon, its suitability should be reviewed against the operating temperature, process atmosphere, and contamination requirements of the semiconductor equipment.
For processes with stricter cleanliness requirements, a CVD SiC coated wafer support tray can be considered. The dense, high-purity SiC surface helps isolate the underlying substrate and provides an additional option for semiconductor processes where impurity control and surface cleanliness are critical.
For more wafer handling and semiconductor equipment components, explore our Semiconductor Ceramic Parts .
The semiconductor wafer support tray is mainly used where wafers need stable support during heating, deposition, transfer, positioning, or other process steps. Depending on the equipment design, the tray can be customized around wafer size, support geometry, process temperature, and installation interface.
A SiC wafer carrier for semiconductor processing may require different support points, holes, slots, contact areas, and mounting features depending on wafer size and equipment architecture. These structures can be manufactured according to customer drawings.
Flatness and support geometry directly affect how the wafer sits on the tray. Precision-machined support surfaces help maintain consistent wafer positioning and reduce unnecessary movement during loading, transfer, and processing.
The good thermal conductivity of silicon carbide helps heat move across the support area. In thermal processes, this can help create a more stable temperature environment around the wafer and reduce localized thermal differences.
For contamination-sensitive processes, high-purity SiC or CVD SiC-coated surfaces can be evaluated. This provides additional flexibility for equipment designers working with stricter particle and impurity-control requirements.
The combination of high stiffness and low thermal expansion helps a high temperature silicon carbide wafer tray maintain its shape during repeated heating and cooling cycles. This is important when wafer position and support flatness need to remain consistent over time.
Wafer-contact areas can be ground, lapped, or polished according to the drawing. Surface roughness control helps reduce wafer sliding, local contact damage, and the risk of backside scratching during handling.
CERAMPRO manufactures custom silicon carbide wafer support trays according to customer drawings. Diameter, thickness, support areas, locating features, holes, slots, steps, recesses, and mounting structures can be reviewed for custom production.
A precision SiC wafer support tray often requires tighter control of flatness, parallelism, and critical wafer-contact areas. These requirements can be evaluated based on tray size, thickness, geometry, and the intended semiconductor process.
Grinding, lapping, and polishing are available for critical support surfaces. Surface roughness requirements are reviewed together with material type, geometry, wafer-contact conditions, and inspection criteria.
Custom holes, slots, grooves, recesses, steps, positioning structures, and other equipment-specific features can be precision machined according to 2D or 3D drawings.
Critical dimensions, flatness, surface condition, and other specified CTQ characteristics can be inspected according to customer drawings before shipment.
As a silicon carbide wafer support tray manufacturer, CERAMPRO supports engineering prototypes, qualification samples, small-batch production, and repeat manufacturing. Material selection, critical tolerances, surface requirements, and manufacturability can be reviewed before production.
For broader wafer handling, thermal processing, and contamination-control applications, see our Semiconductor Ceramic Solutions .
| Parameter | Technical Specification | Functional Significance |
|---|---|---|
| Material Type | SSiC / RBSiC / SiC with CVD SiC Coating | Selected according to temperature, cleanliness, tray geometry, and process conditions |
| Coating (Optional) | CVD SiC Coating | Provides a dense, high-purity surface for contamination-sensitive semiconductor processes |
| Max. Service Temperature | Up to 1600°C* | Suitable for demanding high-temperature wafer processing; actual limit depends on material grade and atmosphere |
| Thermal Conductivity | 120–200 W/(m·K)* | Supports efficient heat transfer across the wafer support area |
| Flatness | ≤10 μm (Total Area)* | Helps maintain stable wafer positioning and process consistency |
| Total Impurities | ≤5 ppm* | Available for applications requiring tighter contamination control |
| Thermal Expansion | 4.0–4.5 × 10-6/K* | Helps reduce dimensional change and thermal stress during heating and cooling cycles |
| Surface Finish | Ra ≤0.4 μm* | Helps reduce wafer sliding and backside scratching |
| Dimensions & Geometry | Custom | Manufactured according to customer drawings and equipment interfaces |
| Inspection | According to Drawing | Critical dimensions, flatness, and surface requirements can be inspected |
*Technical values are reference or target specifications available under specific material and processing conditions. Final values depend on SiC grade, CVD coating requirements, tray dimensions, geometry, process atmosphere, and customer drawings. Critical specifications should be confirmed during project review.
| Material | Key Characteristics | Suitable Wafer / Equipment Applications |
|---|---|---|
| SSiC | High stiffness, good thermal stability, low thermal expansion, and no residual free silicon | High-temperature wafer supports and precision semiconductor process components |
| RBSiC | High rigidity and good suitability for larger sizes and complex structures | Large wafer carriers, trays, fixtures, and structural components |
| CVD SiC-Coated SiC | Dense, high-purity SiC surface with improved contamination control | Semiconductor processes with stricter surface purity and cleanliness requirements |
| Alumina (Al₂O₃) | Good electrical insulation, chemical stability, and cost efficiency | Insulating and general structural ceramic components |
| Aluminum Nitride (AlN) | High thermal conductivity combined with electrical insulation | Wafer heating, thermal management, and electrically insulating components |
There is no single SiC material system that is best for every wafer process. SSiC is generally preferred where high-temperature stability and dimensional control are important. RBSiC can be more practical for larger or more complex structural parts. For applications where surface purity and contamination control are more critical, a CVD SiC-coated solution can be evaluated.
The final material choice should be based on the actual process temperature, atmosphere, tray geometry, wafer-contact requirements, and cleanliness specifications.
A silicon carbide ceramic wafer support tray is a precision ceramic component used to support and carry semiconductor wafers during processing. It is commonly selected for applications where flatness, thermal stability, cleanliness, and dimensional stability are important.
The choice depends on the application. SSiC is generally better suited to applications where high-temperature stability and dimensional control are priorities. RBSiC can be useful for larger or more complex structures. Operating temperature, tray geometry, atmosphere, and contamination requirements should all be considered.
A CVD SiC coating may be useful when the semiconductor process requires a dense, high-purity surface and tighter contamination control. The need for coating should be evaluated according to the actual process environment and cleanliness requirements.
Yes. We manufacture custom trays based on customer drawings. Diameter, thickness, wafer-support areas, holes, slots, mounting structures, flatness, and surface requirements can all be reviewed before production.
These specifications can be evaluated under suitable material, dimensional, and processing conditions. Achievable flatness and surface roughness depend on tray size, thickness, geometry, SiC grade, machining method, and inspection standard.
A 2D or 3D drawing is preferred. Please also provide wafer size, material requirement, operating temperature, process atmosphere, critical dimensions, tolerances, flatness, surface roughness, cleanliness requirements, and expected quantity.
7. Does CERAMPRO supply custom silicon carbide wafer support trays for global semiconductor equipment OEM projects?
Yes. CERAMPRO supplies custom SiC ceramic components to semiconductor equipment manufacturers, engineering teams, and OEM projects in the United States, Germany, Japan, and across Europe. We support prototype validation, small-batch production, and repeat manufacturing based on customer drawings and technical specifications.
For applications that require wafer adsorption, vacuum holding, and precision positioning rather than passive wafer support, see our Silicon Carbide Ceramic Semiconductor Wafer Vacuum Chuck .
If you are sourcing a silicon carbide wafer support tray, silicon carbide wafer carrier, or other custom semiconductor ceramic component, send us your drawing together with the wafer size, process conditions, critical tolerances, surface requirements, and quantity.
Our engineering team can review the SiC material system, tray structure, flatness, surface finish, and manufacturing feasibility before quotation.
