4022.435.8014 — Wafer Chuck, PAS 5500/300 i-Line (ASML)

4022.435.8014 Specifications and Compatible Tools

Key specs: 24V DC power supply, 13.56 MHz RF frequency, vacuum pressure rating of 25 mTorr, and a maximum clamping force of 15 N. Compatible with ASML PAS 5500/300 (200mm wafers) and PAS 5500/350 (300mm wafers), produced 1998–2005. Warning: Do not install this part on systems using 4022.435.8015 (300mm-only variant); mismatched vacuum ports cause catastrophic wafer loss. Cross-reference tool serial numbers with ASML’s 2026 compatibility matrix before purchase.

What to Check Before Buying a Used 4022.435.8014 in 2026

1. RF coil resistance: Use a multimeter to measure <0.1Ω between pins 12–14. >0.2Ω indicates coil degradation.
2. Vacuum port integrity: Pressure test with a Pirani gauge; maintain <10 mTorr for 5 minutes. Leaks >5 mTorr disqualify.
3. Thermal stress cracks: Inspect the ceramic base for hairline fractures using a 10X loupe. Reject any with >2 cracks.
4. Wafer release history: Units with >60k wafer cycles show increased particle generation. Demand cycle logs.

FAQ

Q: Can I use this on a PAS 5500/350?
A: Yes, but only if the tool’s vacuum manifold matches the 4022.435.8014 port layout. Confirm with your tool’s schematics.

Q: Is a refurbished unit better than new?
A: No new units exist. Refurbished is your only option. Ensure it includes ASML’s 2026 ESD upgrade kit.

Q: How do I verify the RF coil condition?
A: Request a coil resistance test log. Units with >0.1Ω or >40k RF-hours need coil replacement.

Q: Why is the price range so wide?
A: Refurb costs vary by condition. Units needing vacuum port or coil work push prices toward the upper range.