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The Hot Edge Ring is a plasma-facing consumable that sits at the immediate periphery of the wafer inside a LAM plasma etch chamber, encircling the 200 mm substrate where it rests on the electrostatic chuck or lower electrode. Its purpose is to extend the electrical and thermal environment of the wafer outward, so that the die formed near the wafer edge experience an etch field as close as possible to those at the centre. In a chamber that processes thousands of wafers between scheduled cleans, this ring is one of the hardest-worked sacrificial components in the system.
The descriptor “hot” is substantial. Unlike a passively cooled focus ring, a hot edge ring is deliberately run at an elevated temperature relative to the wafer and the surrounding hardware, either through direct plasma loading or through a controlled thermal path. Operating the ring hot manages polymer deposition and by-product condensation at the wafer edge, keeping the edge sheath and reaction chemistry stable across long process campaigns. As the ring erodes, that carefully tuned edge condition drifts, which is why this component is tracked, scheduled and replaced as a matter of routine preventive maintenance.
Because it is consumed by the very process it enables, the hot edge ring is a recurring spares line for any fab running legacy 200 mm LAM etch capacity. Supplied here under ESCT P/N ES2099-012 against LAM OEM P/N 716-017544-001, it is offered as a second-source new part verified to the form, fit and function of the original.
The hot edge ring performs several overlapping jobs simultaneously at the wafer periphery. It is at once an electrical extension of the wafer, a thermal buffer, a confinement surface and a sacrificial shield for the more expensive hardware beneath it.
A hot edge ring lives in one of the most aggressive micro-environments in the chamber: continuous ion bombardment, reactive halogen chemistries and repeated thermal cycling. Its material composition and dimensional precision determine both how long it lasts and how cleanly it ages.
Edge rings of this type are produced from carefully selected etch-grade materials, commonly high-purity silicon, quartz or a technical ceramic such as silicon carbide or alumina, depending on the process recipe. The chosen material balances erosion resistance, electrical behaviour and the need to avoid introducing metallic or particulate contamination into the wafer environment.
Because the ring is intentionally run hot, its thermal expansion and contact geometry are part of the process design. Flatness, concentricity and the seating surface against the chuck must be held to tight tolerances so that the wafer-to-ring gap and the thermal path remain repeatable from one ring to the next.
The condition of the hot edge ring is felt directly at the wafer edge, where a meaningful fraction of total die count lives. A worn or out-of-spec ring drives the kind of slow, edge-localised drift that is easy to miss until yield maps show it clearly.
The dominant wear mechanism is gradual erosion of the plasma-facing surface through combined physical sputtering and chemical attack. As the ring thins, the height relationship between wafer and ring changes, the sheath shape shifts, and edge etch performance moves steadily off target until the ring reaches its replacement threshold.
Running hot and cycling repeatedly between process and idle temperatures imposes thermal stress on a brittle ceramic or silicon body. Micro-cracks can initiate at the surface or at seating contacts and propagate into a fracture, which is both an immediate particle source and a risk to the hardware the ring protects.
If the edge temperature falls outside its intended window, polymer and process by-products accumulate unevenly on the ring rather than being managed away. These films eventually flake, generating particles, and can also alter the local electrical and thermal behaviour, undermining the very edge uniformity the ring exists to protect.
Replacement is a routine preventive-maintenance task, but it is contamination-sensitive and should follow the established procedure for the specific LAM chamber. The following sequence outlines the typical workflow; always defer to your site PM documentation and safety controls.
Edge rings are predictable, high-turnover consumables, which makes them ideal candidates for a managed second-source supply strategy. ESCT Fab Support helps fabs keep legacy 200 mm LAM etch capacity productive without overpaying for routine wear parts.
It surrounds the 200 mm wafer at the edge of the etch chamber and extends the electrical, thermal and plasma environment outward. By doing so it keeps the etch field, ion energy and edge temperature uniform right out to the wafer perimeter, protecting both edge die yield and the hardware beneath it.
No. This ring is supplied as a second-source new part that is verified to the form, fit and function of LAM OEM P/N 716-017544-001. It is a compatible replacement and is not an original LAM-branded component.
The ring is intentionally run at an elevated temperature relative to the wafer and surrounding hardware. Holding the edge hot manages polymer and by-product condensation and stabilises the edge chemistry over long process campaigns, which is central to keeping edge etch performance consistent.
Replacement is usually driven by accumulated process time or wafer count, confirmed by visual erosion and by drift in edge critical-dimension and uniformity data. Rising edge particle counts or visible cracking are clear signals that the ring has reached the end of its useful life.
The current lead time is 4–5 weeks. Because edge rings are a routine, predictable consumable, we recommend aligning orders with your planned maintenance cycle and holding appropriate buffer stock to avoid tool downtime.
The part is built to match the original’s dimensions, material characteristics and fit so it drops into the existing seating and behaves the same in the chamber. As with any new consumable, we recommend a normal conditioning recipe and test-wafer verification after installation before returning the tool to production.
The 200 mm Hot Edge Ring (LAM OEM P/N 716-017544-001, ESCT P/N ES2099-012) is a plasma-facing consumable that governs edge etch uniformity, RF return and particle performance at the wafer perimeter in LAM etch chambers. Run intentionally hot, it manages edge chemistry and temperature while sacrificially protecting the chuck and electrode beneath. Erosion, thermal cracking and deposition build-up are its principal wear modes, all of which show up first in edge yield, which is why disciplined PM replacement matters. Offered as a second-source new part on a 4–5 week lead time, it gives fabs a cost-effective, reliable way to keep legacy 200 mm LAM etch capacity running.
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 Lam Research part number 716-017544-001. It is not an original OEM part and is not sold as one. It is not manufactured by, endorsed by, or affiliated with Lam Research, and all manufacturer names and part numbers are quoted for identification and compatibility purposes only.
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