1. What Is the NIKON NSR-S204B?
The NIKON NSR-S204B is a 200mm i-line reduction stepper used for photolithography in semiconductor fabrication.
It is designed for:
● Logic and mixed-signal devices (mature nodes)
● Power semiconductor fabrication (IGBT, MOSFET)
● Analog IC manufacturing
● MEMS processing
● Discrete device production
● Research & development fabs
The system uses i-line (365 nm) ultraviolet exposure and reduction optics to project mask patterns onto photoresist-coated wafers.
2. Core Technical Specifications
While configuration may vary depending on production year and upgrades, typical specifications include:
Wafer Size
● 200mm wafers
● Compatible with standard 200mm cassette handling
Exposure Wavelength
● i-line (365 nm mercury lamp source)
Resolution Capability
● Typically suitable for 0.35 µm to 0.5 µm class processes
(Actual capability depends on resist process and illumination setup.)
Overlay Accuracy
● Designed for tight overlay control suitable for mature node production
● Performance depends on stage condition and calibration
Reduction Optics
● Reduction projection system (commonly 4X or 5X reduction depending on configuration)
Alignment System
● Optical alignment with global and field alignment capability
● Wafer mark recognition system
Stage System
● Precision XY wafer stage
● Closed-loop positioning control
● High repeatability stepping performance
3. Why the NSR-S204B Remains Relevant in the Used Market
Although newer DUV scanners dominate advanced logic production, the NSR-S204B remains in demand for several reasons:
1. Mature Node Stability
Many 200mm fabs still operate at 0.35 µm, 0.5 µm, and above. For these nodes, i-line steppers remain fully capable.
2. Cost Efficiency
A used Nikon NSR-S204B costs significantly less than modern lithography platforms, making it attractive for capacity expansion or backup lines.
3. Proven Optical System
Nikon’s optical systems are known for durability and long-term alignment stability when properly maintained.
4. Power & Analog Market Growth
Global demand for automotive chips, power devices, and industrial electronics continues to drive 200mm fab utilization.
4. Engineering Considerations Before Purchasing a Used NSR-S204B
Lithography equipment is complex. Buying a used stepper requires careful technical evaluation.
Below are the most critical inspection areas.
A. Illumination System Condition
The NSR-S204B uses a mercury lamp i-line light source.
Key checks:
● Lamp housing condition
● Power supply stability
● Illumination uniformity
● Optical contamination in illumination path
Lamp system instability can directly impact CD control.
B. Projection Lens Condition
The projection lens is the most critical and sensitive component.
Inspection should include:
● Lens transmission stability
● Contamination or haze
● Focus performance test
● CD uniformity across field
● Overlay performance test wafers
Lens replacement is extremely expensive and must be evaluated carefully.
C. Stage Accuracy and Repeatability
The wafer stage must deliver consistent stepping precision.
Verify:
● XY repeatability
● Step accuracy
● Backlash or drift
● Vibration isolation performance
● Interferometer calibration status
Stage wear can reduce overlay performance.
D. Alignment System Health
Misalignment leads to yield loss.
Check:
● Wafer mark detection reliability
● Recognition speed
● Alignment repeatability
● Camera clarity
● Illumination consistency
E. Software and Control System
● Confirm system software version
● Check for error logs
● Verify communication with fab MES
● Confirm backup data availability
Older control systems may require hardware refurbishment.
5. Typical Applications of a Used NSR-S204B
A used NIKON NSR-S204B is commonly used in:
Power Semiconductor Manufacturing
IGBT and MOSFET production lines using 200mm wafers.
Automotive IC Production
Stable overlay and repeatable CD control are critical for automotive-grade chips.
Analog and Mixed-Signal Devices
Mature node production with moderate resolution requirements.
MEMS Fabrication
Flexible lithography for sensor structures.
University and R&D Labs
Cost-effective platform for process development.
6. Cost Structure and Hidden Expenses
The price of a Used NIKON NSR-S204B sale varies depending on:
● Year of manufacture
● Usage hours
● Optical condition
● Refurbishment status
● Included spare parts
● Installation region
However, buyers should also consider:
● Installation and rigging costs
● Cleanroom preparation
● Power requirements
● Chiller and environmental controls
● Replacement lamp inventory
● Spare part stocking
● Preventive maintenance costs
Lithography equipment is capital-intensive not only at purchase, but throughout its lifecycle.
7. Evaluation Checklist Before Purchase
Before committing to a Used NIKON NSR-S204B sale, confirm:
● Verified overlay test results
● CD uniformity test report
● Stage repeatability data
● Lens inspection documentation
● Error history report
● Software backup
● Complete configuration list
● Packing and de-installation plan
● Installation support availability
A structured technical audit reduces operational risk.
FAQ
Q: What process nodes can the Nikon NSR-S204B support?
A: It is typically suitable for 0.35µm–0.5µm mature nodes, depending on resist and process optimization.
Q: Is it still viable for production?
A: Yes, especially for power, analog, MEMS, and 200mm legacy fabs.
Q: What is the biggest risk when buying used?
A: Lens condition and stage accuracy. Both directly impact overlay and yield.
Q: Should I choose refurbished over as-is?
A: Refurbished systems reduce downtime risk and improve long-term stability.
Conclusion
The Used NIKON NSR-S204B continues to serve many 200mm fabs worldwide because of its mechanical stability, mature optical design, and suitability for established technology nodes.
However, purchasing such equipment requires careful evaluation of:
● Optical condition
● Stage accuracy
● Alignment performance
● Illumination system health
● Spare parts availability
● Technical support capability
Price alone should never be the deciding factor.
As a professional supplier specializing in Nikon lithography systems, complete NSR-S204B units, and related spare parts, we focus on technical verification, responsible refurbishment practices, and long-term serviceability. Our approach emphasizes system stability and lifecycle support rather than short-term transactions.
If you are evaluating a Used NIKON NSR-S204B sale, a structured technical review is always the best starting point.
