Used Focus Ring / Edge Ring

How Much Does Used Focus Ring / Edge Ring Cost in 2026?

Used Focus Rings / Edge Rings (Part # varies by OEM) priced $1,270–$7,980 in 2026, depending on material (quartz, ceramic, or metal-coated) and condition. Refurbished units with verified <10µm surface wear average $4,200–$7,980, while lightly used parts with >10µm wear range $1,270–$2,800. Savings vs new: 40–70% (new OEM prices exceed $11,000). Critical caveat: Parts with >20µm uneven wear or microcracks (visible under 10x magnification) may cause plasma instability, leading to 3–5% yield loss in etch processes.

Focus Ring / Edge Ring Specifications and Compatible Tools

Key specs: Diameter 200–300mm, thickness 15–25mm, thermal stability up to 400°C, and dielectric strength >10kV/mm (quartz variants). Compatible with:

• Lam Research Centura DSiE (2012–2018)
• Applied Materials Reflexion P5000 (2014–2020)
• Tokyo Electron FlexLine HDP-CVD (2015–2021)
  Exclusion: Avoid using Part # AM-ER-330B (Applied Materials) in Centura platforms—mismatched curvature causes edge plasma collapse. Verify tool OEM drawings before installation.

What to Check Before Buying a Used Focus Ring / Edge Ring in 2026

1. Surface integrity: Use a digital microscope (10–50x) to confirm no cracks >50µm or pitting >3µm depth.
2. Dimensional tolerance: Measure with a 5-digit caliper; reject parts with >0.05mm deviation from nominal ID/OD.
3. Contamination levels: Run an EDX analysis for metallic residues (e.g., tungsten, aluminum); concentrations >5ppm risk chamber contamination.
4. Lifecycle data: Request wafer-run history—parts with >15k cycles may exhibit hidden delamination.
5. Plasma test: Perform a 10-minute ICP test at 1,300W (13.56MHz) to check for arcing or uneven sheath formation.

FAQ

Q: Can I use a quartz Focus Ring on a metal-plasma tool?
A: No—quartz degrades rapidly in high-density metal plasmas. Use ceramic or aluminum-nitride variants instead.

Q: How to differentiate between Focus Ring and Edge Ring?
A: Focus Rings adjust plasma uniformity (installed under wafer), while Edge Rings dampen edge effects (mounted outside the wafer perimeter).

Q: Are 200mm rings compatible with 300mm tools?
A: Only if the tool’s chuck has adjustable clamping zones. Otherwise, scaling causes plasma instability.

Q: What’s the ROI for refurbishing vs replacing?
A: Refurbishing a $6,500 ring (media blasting + recoating) costs $1,800–$2,500, vs buying used for $3,200–$4,900. Choose based on wear severity.