Varian Varian Semiconductor Equipment 105653001 Aperture Exit B Gra — Graphite Shield for Etch Systems (Varian)

How Much Does Varian Semiconductor Equipment 105653001 Aperture Exit B Graphite Shield New Cost in 2026?

The Varian 105653001 Aperture Exit B Graphite Shield New carries a fixed price of $801 in 2026, positioned as a cost-effective alternative to OEM pricing. Refurbished units from vendors like Ferrotec and Axus Technology typically range between $500–$650 for Grade B condition, offering 40–60% savings versus new OEM pricing (which historically exceeds $1,200). However, buyers should note that lower-grade used parts (Grade C) may require additional surface reconditioning, adding $150–$250 to the total cost.

Failure to source a compatible shield can halt production on tools like the Varian Centura platform, where downtime costs $10,000–$15,000 per hour. Critical caveat: units with surface erosion exceeding 0.2mm thickness loss should be rejected, as they risk plasma leakage during high-power etch cycles (1,200–1,500W typical). Always verify the seller’s testing protocol for thermal shock resistance, a common failure mode in aged graphite components.

Varian Semiconductor Equipment 105653001 Aperture Exit B Graphite Shield New Specifications and Compatible Tools

This shield is a graphite-based component designed for aperture exit regions in high-density plasma (HDP) etch systems. Key specs include:

• Dimensions: 125mm OD × 80mm ID × 25mm thickness (verify with seller for tool-specific variance)
• Material: Isotropic graphite with 99.5% purity (commonly SGL Group’s P54 or equivalent)
• Operating Temp: -20°C to 350°C (short-term spikes up to 450°C tolerated)
• Lifecycle: Typically rated for 5,000–7,000 RF-hours before erosion necessitates replacement

Compatible with Varian Centura (2005–2010 vintage) and Exelan (2008–2012) systems. Incompatibility warning: Do not use with 105653002 variants, which have a 10mm shorter flange. A failed shield can cause 15–20% yield loss in critical layer etch processes, directly costing $50,000–$75,000 per incident in rework and wafer scrap. Always cross-check with your tool’s maintenance manual for exact fit.

What to Check Before Buying a Used Varian Semiconductor Equipment 105653001 Aperture Exit B Graphite Shield New in 2026

1. Surface Integrity: Reject units with cracks deeper than 0.1mm or pitting clusters >5mm². Use a 10x magnifier or profilometer to measure erosion.
2. Production Year: Units manufactured before 2013 often lack modern thermal expansion coatings; these should be reconditioned at an additional $300–$400.
3. Material Verification: Request EDS (Energy-Dispersive X-ray Spectroscopy) analysis to confirm graphite purity. Substandard materials (e.g., 95% purity) degrade 3x faster.
4. Surface Finish: Check Ra (roughness average) ≤ 1.6µm. Rougher finishes increase particulate generation during etch cycles.
5. Thermal Testing: Ask for records of thermal shock testing (50 cycles between 25°C and 350°C). Failures here correlate with 80% higher failure rates in field use.

Purchasing a defective unit can trigger $20,000+ in repair costs due to plasma chamber contamination. Always demand a 30-day performance warranty.

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