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The 2L10-251881-11 RING (297B), FOCUS 7.5-360 V3 is a high-precision plasma-facing component used in Tokyo Electron (TEL) semiconductor processing equipment to support plasma confinement, wafer edge conditioning, and process uniformity during advanced etch and plasma-processing applications.
Installed around the wafer process zone, the focus ring helps shape the plasma environment surrounding the wafer edge, giving controlled ion distribution and stable process conditions across the wafer surface. In semiconductor manufacturing environments where critical dimension control, profile uniformity, and yield optimization matter, maintaining focus ring integrity is critical to achieving repeatable process performance.
Because focus rings operate under continuous exposure to plasma, RF energy, thermal cycling, reactive process gases, and ion bombardment, they are considered consumable components subject to gradual wear. Erosion, dimensional changes, contamination buildup, and surface degradation can affect chamber performance over time if not addressed through preventive maintenance.
The ESCT equivalent part number for this component is ES7099-116, supplied as a 2nd Source NEW OEM-compatible replacement designed to meet form, fit, and functional requirements aligned with the original TEL component.
The 2L10-251881-11 functions as a critical plasma-management component.
Core functions include:
In TEL plasma-processing systems, focus rings commonly operate alongside electrodes, ground rings, ESC assemblies, chamber liners, and other plasma-facing consumables.
The focus ring helps regulate plasma behavior near the wafer perimeter.
Key performance characteristics include:
Proper plasma edge management contributes directly to yield improvement.
The focus ring helps maintain stable process conditions.
Performance attributes may include:
Uniform plasma behavior supports predictable manufacturing outcomes.
Designed for demanding semiconductor production environments.
Durability characteristics may include:
Maintaining component integrity helps preserve chamber qualification and uptime.
The 2L10-251881-11 may operate alongside related chamber components including:
Together these components support plasma control and process optimization.
The 2L10-251881-11 can directly influence chamber performance and manufacturing productivity.
Potential impacts of wear or degradation include:
Replacing a worn focus ring can help restore process stability and improve chamber performance.
Continuous plasma exposure gradually affects component surfaces.
Indicators include:
Long-term process exposure may alter component geometry.
Symptoms may include:
Wear progression may contribute to contamination concerns.
Indicators include:
Failure to replace worn focus rings may accelerate wear on adjacent chamber consumables.
To support best performance:
The 2L10-251881-11 Ring (297B), Focus 7.5-360 V3 is an OEM-referenced TEL component.
Key considerations:
Maintaining inventory of the ES7099-116 / 2L10-251881-11 can help reduce downtime exposure and improve maintenance readiness.
It helps control plasma behavior around the wafer edge, supporting process uniformity, plasma stability, and repeatable chamber performance.
Focus rings influence plasma confinement and ion distribution, which directly affect etch uniformity, process consistency, and wafer yield.
It identifies a specific TEL focus ring design and dimensional configuration engineered for compatible chamber platforms and process applications.
4. What are signs the focus ring may need replacement?
Common indicators include:
Yes. Changes in ring geometry can alter plasma characteristics and impact wafer processing consistency.
Yes. Plasma-facing erosion may contribute to particle generation and wafer defects.
Yes. Plasma instability, contamination, and edge process variation can directly impact manufacturing yield.
Issues are commonly identified through PM inspections, chamber qualification testing, plasma diagnostics, and particle monitoring.
Yes. Chamber qualification and process verification should always be performed following focus ring replacement.
Incorrect dimensions or material characteristics may affect plasma performance, chamber compatibility, and process outcomes.
No. This product is supplied as ESCT P/N ES7099-116, a 2nd Source NEW OEM-compatible replacement aligned with the original TEL component requirements.
Yes. Chamber configuration, dimensions, process requirements, and subsystem compatibility should always be confirmed.
Yes. ESCT supports compatibility verification based on equipment and application requirements.
Depending on availability, associated electrodes, ground rings, liners, shields, confinement rings, and other plasma-facing components may also be supported.
Preventive replacement helps maintain plasma stability, reduce particle-related defects, preserve process consistency, and minimize unexpected production interruptions.
The 2L10-251881-11 Ring (297B), Focus 7.5-360 V3 is a critical plasma-facing consumable that supports plasma confinement, edge process control, and repeatable semiconductor manufacturing performance in TEL systems.
Its condition can directly influence process uniformity, contamination control, equipment uptime, and wafer yield.
Sourcing through ESCT Fab Support as ES7099-116 provides a verified 2nd Source NEW OEM-compatible replacement backed by semiconductor expertise, quality verification, and responsive supply support.
Disclaimer: This part is supplied by ESCT Fab Support as a new, OEM-compatible second-source component, verified to the form, fit and function of Tokyo Electron part number 2L10-251881-11. It is not an original OEM part and is not sold as one. It is not manufactured by, endorsed by, or affiliated with Tokyo Electron, and all manufacturer names and part numbers are quoted for identification and compatibility purposes only.
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