0200-03576K
(C2)SI TOP RING(PRO)

Silicon top ring (C2 / PRO configuration) (OEM P/N 0200-03576K), upper silicon edge ring for AMAT 300 mm plasma etch systems

ESCT P/N ES1099-008, second-source silicon top ring for Tokyo Electron (TEL) 300 mm etch chamber assemblies

The Silicon Top Ring supplied under ESCT P/N ES1099-008 (cross-referenced to AMAT OEM P/N 0200-03576K) is a high-purity silicon consumable that forms part of the upper edge assembly inside a 300 mm plasma etch process chamber. As the “top” ring in the silicon ring stack, it sits above the focus ring and surrounds the outer perimeter of the wafer plane, where it closes out the upper boundary of the plasma sheath at the wafer edge. The “(C2)” designation identifies the chamber or configuration variant the ring is dimensioned for, while “(PRO)” denotes the process-grade build intended for production etch service rather than development or test use.

In a TEL 300 mm etch chamber, the edge of the wafer is one of the most difficult regions to control. The plasma sheath naturally distorts where the conductive wafer surface gives way to the surrounding hardware, and that distortion bends ion trajectories, changes local etch rate and shifts critical dimensions on the outermost dies. The silicon top ring works together with the focus ring and the lower silicon parts to extend a uniform, silicon-faced surface beyond the wafer edge, so that the sheath transitions smoothly and the edge dies see a process environment as close as possible to the centre of the wafer.

Because it is fabricated from process-compatible silicon rather than quartz or a ceramic, the top ring is also a sacrificial chemistry-matched part. It erodes in a controlled, predictable manner and contributes silicon to the plasma in the same way the wafer does, which keeps loading effects stable and avoids introducing foreign species that would otherwise compromise selectivity or particle performance.

Functional role of the silicon top ring in AMAT 300 mm etch platforms

The silicon top ring is not a passive cover. It actively shapes the plasma at the wafer edge, manages the silicon mass balance of the chamber and protects the hardware beneath it. Its principal functions include:

• Extending a continuous silicon surface beyond the wafer perimeter so the plasma sheath bends gradually rather than abruptly at the wafer edge.
• Helping to terminate and confine the plasma at the upper boundary of the process region, supporting consistent confinement and pressure behaviour.
• Maintaining the silicon loading of the chamber so etch chemistry, polymer formation and selectivity remain stable wafer to wafer.
• Shielding the underlying metallic chamber furniture and clamping hardware from direct ion and radical exposure.
• Acting as a controlled sacrificial surface that erodes predictably, so wear can be scheduled rather than discovered as a yield excursion.
• Providing a clean, low-contamination silicon-faced boundary that limits metal back-sputtering and keeps edge particle counts low.

Material and process performance

Silicon purity and structural quality

The performance of any silicon ring begins with the material itself. The ES1099-008 top ring is manufactured from high-purity silicon selected to match the chemistry and erosion behaviour expected of the OEM component.

• High-purity silicon to minimise metallic contamination and keep the chamber chemically clean.
• Controlled resistivity so the ring presents the expected electrical behaviour to the plasma sheath.
• Tight dimensional tolerances on inner diameter, outer diameter, flatness and thickness so sheath geometry at the wafer edge is reproducible.
• Low-defect, well-finished surfaces that resist micro-cracking and limit particle shedding during thermal cycling.

Erosion and thermal behaviour

As an exposed consumable, the top ring is judged on how gracefully it ages. It must erode uniformly and tolerate repeated thermal swings between plasma-on and plasma-off conditions.

• Predictable, even erosion that lets engineers correlate ring life to wafer count or RF hours.
• Resistance to thermal shock so rapid heating and cooling does not seed cracks.
• Stable surface chemistry under fluorine-, chlorine- or bromine-based etch plasmas commonly run in 300 mm chambers.
• Consistent silicon consumption that keeps the chamber’s overall etch loading in balance over the part’s service life.

Impact on tool performance and yield

Because it governs the plasma environment at the wafer edge, the condition of the silicon top ring is directly visible in device data. A correctly specified, fresh ring keeps the outer dies inside their process window; a worn or out-of-tolerance ring pushes the edge out of specification long before the rest of the wafer shows any problem.

• Edge-to-centre etch uniformity and critical-dimension control on the outermost dies.
• Edge die yield, which often dominates total wafer yield as wear progresses.
• Particle and defect performance, since a degraded silicon surface can shed flakes onto the wafer.
• Process repeatability and drift, as silicon loading changes shift etch rate and selectivity over time.
• Mean time between cleans and overall chamber availability, because ring wear sets the preventive-maintenance interval.

Common wear and failure modes

Erosion and thinning

The dominant wear mode is gradual erosion. Continuous ion bombardment and chemical attack thin the ring and round its exposed edges, which slowly alters the sheath profile at the wafer edge and pushes edge critical dimensions and etch rate off target until the part is replaced.

Cracking and chipping

Silicon is hard but brittle. Thermal cycling, mechanical mishandling during installation, or stress concentrated at a thinned section can produce cracks or chips. Once the surface fractures, the ring becomes a particle source and must be removed immediately to protect product wafers.

Surface roughening and deposit build-up

Over many RF hours the silicon face roughens and polymer or by-product films accumulate on cooler regions of the ring. Roughened or coated surfaces shed particles, change local emissivity and disturb the plasma boundary, contributing to defectivity and process drift.

Installation and replacement guidance

Silicon edge parts are fragile and contamination-sensitive, so replacement should follow the tool owner’s qualified procedure. The following sequence outlines good practice:

• Vent the chamber and isolate it per the system’s lockout and safety procedure, allowing components to cool before access.
• Remove the worn top ring carefully, supporting it fully so it cannot drop or flex, and record its wear condition for life-tracking.
• Inspect the seating surfaces and adjacent silicon parts; clean away deposits and verify there is no damage to the mating hardware.
• Unpack the new ES1099-008 ring with clean, powder-free gloves, handling only at the edges to avoid surface contamination.
• Seat the ring concentrically and flush, confirming even contact with no rocking, gaps or trapped debris.
• Reassemble the chamber, pump down, leak-check and run any required season or burn-in recipe to stabilise the surface.
• Re-qualify the chamber with monitor wafers and reset the ring’s wear counter in the maintenance log.

Spare parts strategy for AMAT silicon edge consumables

Silicon rings are scheduled consumables, which makes availability and consistency just as important as the part itself. Sourcing ES1099-008 through ESCT Fab Support gives fabs a dependable alternative for keeping etch chambers in production:

• Second-source new parts verified to the form, fit and function of OEM P/N 0200-03576K.
• High-purity silicon selected to match the erosion and contamination behaviour of the original component.
• A typical lead time of 4-5 weeks, supporting planned preventive-maintenance scheduling and buffer stock.
• Cost relief against OEM list pricing for a high-frequency consumable, improving cost of ownership per wafer.
• Consistent dimensional control so installed performance and wear life remain predictable across replacements.
• Knowledgeable support to help confirm fitment against your chamber configuration before you order.

Frequently asked questions

What does the silicon top ring actually do in the chamber?

It forms the upper silicon boundary around the wafer edge, extending a uniform silicon surface beyond the wafer so the plasma sheath transitions smoothly. This keeps etch rate, critical dimensions and selectivity consistent on the outer dies and helps confine the plasma.

Is this an original AMAT OEM part?

No. ES1099-008 is supplied as a second-source new part that is OEM-compatible. It is manufactured to match the form, fit and function of AMAT OEM P/N 0200-03576K, but it is not an original OEM part and is not sold as one.

Why is it made from silicon rather than quartz or ceramic?

Silicon is chemically matched to the wafer, so the ring contributes silicon to the plasma in the same way the wafer does. This keeps the chamber’s etch loading balanced, preserves selectivity and avoids introducing foreign species that would raise contamination or particle counts.

How do I know when the ring needs replacing?

Replacement is usually driven by a wafer-count or RF-hour limit set during qualification, supported by visual inspection at preventive maintenance. Drifting edge critical dimensions, rising edge particle counts or visible thinning, cracking or surface roughening all indicate the ring has reached the end of its useful life.

What is the lead time for ES1099-008?

The typical lead time is 4-5 weeks. Because silicon rings are recurring consumables, many fabs hold buffer stock and place replenishment orders against their planned maintenance schedule to avoid unplanned downtime.

How should the ring be handled during installation?

Handle it only with clean, powder-free gloves and support it at the edges, since silicon is brittle and contamination-sensitive. Seat it concentrically and flush with no rocking, then pump down, leak-check and run any required season recipe before returning the chamber to production.

Summary

The Silicon Top Ring (ESCT P/N ES1099-008, OEM P/N 0200-03576K) is the upper silicon edge ring in a 300 mm plasma etch chamber, working with the focus ring and lower silicon parts to control the plasma sheath at the wafer edge. By extending a chemistry-matched silicon surface beyond the wafer, it stabilises edge etch uniformity, critical dimensions, selectivity and particle performance, and it does so as a predictable sacrificial consumable. Supplied as a second-source new component with a typical 4-5 week lead time, it offers fabs a cost-effective, dimensionally consistent route to keeping etch chambers qualified and in production.

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 Applied Materials part number 0200-03576K. It is not an original OEM part and is not sold as one. It is not manufactured by, endorsed by, or affiliated with Applied Materials, and all manufacturer names and part numbers are quoted for identification and compatibility purposes only.

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