8-Inch CVD Silicon Carbide (SiC) Coated Epitaxy Top Ring

Key Features of 8 Inch SiC Epi Top Ring

● High Purity: 99.9995% minimum. Metal won't migrate into the epi-layer. This keeps wafer carrier concentration where it needs to be.

● Particle suppression: The CVD structure is dense. No pores. It won't shed particles while the tool is running. Factories see better yields this way.

● Heat Resistance: The ring stays stable at 1500°C. Low CTE (thermal expansion) means no warping during fast heat-up/cool-down cycles.

● Chemical Stability: The solid CVD SiC resists H2 and HCl gases. It also resists NH3. It has no coating to peel off. It does not degrade in harsh CVD environments.

● Component Life: The surface is extremely hard. It survives repeated HF/HCl chemical cleaning. This reduces replacement frequency. It also lowers the total cost of ownership for the fab.

Technical Specifications

The uniformity of coating thickness between batches is controlled at 10um

Applications

The CVD SiC epi top ring is widely used in:

● Silicon epitaxy (Si Epi) reactors

● Silicon carbide epitaxy (SiC Epi)

● MOCVD systems

● CVD deposition equipment

Commonly paired with:

● Susceptors

● Wafer carriers

● Preheat rings

● Epitaxy reactors

Why hoose VETEK SiC Epi Top Ring?

● Full Manufacturing Capability: 

From raw material purification to precision machining and CVD coating, VETEK controls the entire production process to ensure consistent semiconductor-grade quality.

● High Accuracy: 

We use micron-level machining. The CVD thickness is very uniform. This makes every ring perform exactly the same way.

FAQ

(1) What does the SiC epi top ring do?

The ring manages heat and gas flow. It makes sure the thin film grows evenly across the wafer.

(2) Why is CVD SiC better than graphite?

Graphite is porous. Graphite has pores and releases gas. Solid CVD SiC is dense and clean. It lasts much longer in corrosive tools.

(3).Can the 8 inch SiC top ring be customized?

Yes. We build to your specific tool drawings. We can adjust geometry based on your process.

(4).What industries use SiC epitaxy rings?

They are mainly used in semiconductor manufacturing, including power devices, RF devices, and SiC wafer production.