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8/MIN/CL Focus Ring for Plasma Edge Control and Process Uniformity, Tokyo Electron Platforms
The 3D10-250576-21 (RING FOCUS 8/MIN/CL) is a precision-engineered plasma-facing focus ring used within Tokyo Electron semiconductor processing systems, designed to control plasma behavior at the wafer edge, support process uniformity, and protect chamber hardware in advanced plasma etch environments.
Positioned around the wafer on the electrostatic chuck (ESC), and in some advanced comparisons discussed alongside chuck ASML and stepper chuck architectures, the focus ring supports electric field control at the wafer edge. As a critical chamber item, its interaction with adjacent hardware can influence plasma stability across tightly controlled process windows.
Because focus rings operate under aggressive ion bombardment, reactive chemistries, and sustained thermal loading, degradation over time can contribute to plasma instability, erosion-driven dimensional drift, particle generation, and process variation. The 3D10-250576-21 is engineered to maintain stable plasma-facing performance under demanding fab conditions while supporting repeatable chamber behavior and high tool uptime.
The 3D10-250576-21 functions as a critical plasma-facing consumable supporting edge plasma tuning and chamber stability.
Core functions include:
In integrated tool environments, focus ring behaviour can also indirectly interact with surrounding subsystems such as ESC clamping hardware, Schunk handling interfaces, and chamber support mechanisms sometimes referenced alongside motor driver control assemblies in broader equipment maintenance documentation.
The focus ring plays a direct role in wafer edge process performance.
Key performance characteristics include:
Proper focus ring performance is critical to maintaining repeatable edge conditions.
Ring geometry is central to plasma tuning and repeatability.
Performance attributes include:
Even minor dimensional drift can materially affect process behavior.
In tightly specified process environments, profile tolerances may be managed to MIL-level precision requirements or internal DTL-style specifications, with some fabs using UTC time-stamped maintenance records to monitor wear trends across process campaigns.
The ring is exposed to highly aggressive plasma conditions and must sustain long-term material integrity.
Durability features include:
Material behaviour is often evaluated not only against plasma chemistry but also against adjacent pan and shield hardware surfaces, where interaction between the focus ring and surrounding chamber item geometry can influence long-term erosion behaviour.
The 3D10-250576-21 may operate alongside related components including:
Together these components support plasma stability, hardware protection, and repeatable process performance.
In some process architectures, compatibility may also be reviewed alongside stepper chuck or chuck ASML benchmark references, while Schunk handling interfaces may be considered where wafer support and transfer integration overlap.
The 3D10-250576-21 is directly tied to process quality and chamber stability.
Potential impacts of wear or degradation include:
Replacing a worn focus ring can restore plasma control and improve process consistency.
Continuous plasma exposure can alter ring geometry over time.
Indicators include:
Material wear can contribute to contamination risk.
Degradation mechanisms may also indirectly affect nearby support hardware, including pan assemblies or interfaces sometimes associated with motor driver-controlled subsystems, particularly where chamber tolerances are managed to strict DTL or MIL criteria.
Symptoms may include:
Degraded focus rings may contribute to changes in edge process behavior.
Indicators include:
To support best performance:
The 3D10-250576-21 (RING FOCUS 8/MIN/CL) is a Tokyo Electron OEM part.
Key considerations:
It supports plasma confinement and wafer edge control, helping maintain process uniformity and stable chamber performance.
It shapes electric field and plasma density at the wafer perimeter, which directly influences edge process conditions.
Geometry affects plasma interaction and process tuning. Even small deviations can impact uniformity and yield.
Typical indicators include:
Yes. Focus ring degradation can contribute to defectivity, variability, and reduced process control margins.
Yes. Focus rings are typically managed as plasma-facing consumables replaced on wear thresholds or PM intervals.
Yes. ESCT supports dimensional, material, and compatibility verification aligned with OEM requirements.
Incorrect geometry can disrupt plasma distribution, alter chamber tuning, and increase non-uniform processing risk.
Depending on availability, associated components such as 2L10-252700-11, 2L10-251877-11, and related chamber hardware may also be supported.
This product is supplied as a 2nd New OEM-compatible assembly, verified to meet form, fit, and functional requirements aligned with the relevant part number. It is not an original OEM manufacturer part.
The 3D10-250576-21 Focus Ring (8/MIN/CL) is a mission-critical plasma-facing consumable supporting wafer edge control, process repeatability, and chamber stability in Tokyo Electron systems.
Its geometry, material condition, and interaction with surrounding chamber hardware can directly influence uniformity, uptime, and yield protection.
Sourcing through ESCT Fab Support provides verified quality, faster availability, and semiconductor-focused technical expertise to help maintain reliable, production-ready process performance.
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 3D10-250576-21. 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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