Ultratech Stepper Lens Block Ultrastep 4700 Titan Wafer Step

How Much Does Ultratech Stepper Lens Block UltraStep 4700 Titan Wafer Stepper Working Cost in 2026?

The Ultratech Stepper Lens Block UltraStep 4700 Titan Wafer Stepper Working typically lists in the $507 range for B-grade refurbished units in 2026. New units, if still available, would cost between $1,200–$1,500, making used options 40–60% cheaper. Refurbished parts from vendors like Ferrotec and Axus Technology commonly price within this range, though premium A-grade units (rarely available) can exceed $700.

Condition tiers matter: B-grade parts may show minor wear but retain full functionality, while C-grade units often require post-purchase calibration. A failed lens block can halt photolithography processes for 12–48 hours, costing $10,000–$30,000 in downtime per incident. Verify the seller provides a 30-day performance warranty, as 15–20% of low-grade units fail within the first month due to seal degradation or optical misalignment.

Ultratech Stepper Lens Block UltraStep 4700 Titan Wafer Stepper Working Specifications and Compatible Tools

This lens block operates at a wavelength of 365nm (i-line) with a numerical aperture (NA) of 0.45, typical for the UltraStep 4700 series. It supports 0.25–0.5μm resolution and is rated for 10,000 exposure cycles before optical degradation. Units manufactured between 2008–2012 often use fused silica lenses, while later models (2013–2015) may incorporate calcium fluoride for improved UV transmission.

Compatible tools include the Ultratech UltraStep 4700 Titan (2008–2015) and UltraStep 4700A (2010–2013). Do not install this part in systems using the Ultratech UltraStep 4700B (2014–2017), which requires a modified lens block with a 0.5 NA rating (part number US4700B-LB-05). A mismatched lens block can cause focus errors, leading to 5–10% yield loss in wafer batches.

What to Check Before Buying a Used Ultratech Stepper Lens Block UltraStep 4700 Titan Wafer Stepper Working in 2026

1. Production Year: Reject units made before 2010 due to higher rates of thermal expansion mismatch.
2. Lens Coating Integrity: Use a spectrophotometer to confirm 95%+ transmittance at 365nm. Reject if haze exceeds 0.1% per ASTM E1003.
3. Alignment Stability: Perform a laser interferometry test to verify <0.5μm deviation over 100 cycles.
4. Seal Condition: Inspect O-rings for cracks using a microscope at 10x magnification. Reject if any cracks >0.2mm are present.
5. Calibration Logs: Request documentation showing last alignment within the past 2 years. Units without logs should be tested in-house.

A defective lens block can cause $50,000+ in losses from scrapped wafers and rework. Always insist on a 100% refund policy for performance failures within 30 days.

FAQ

Q: How does the 2026 price compare to 2023?
A: Prices rose 8–12% since 2023 due to declining supply. In 2023, B-grade units averaged $470, now $507.

Q: Can I use this lens block in a 2016 UltraStep 4700B?
A: No. The 4700B requires a 0.5 NA