Edwards IXH1220 Dry Vacuum Pump Applications in Semiconductor & Industrial Sectors

I. Semiconductor Industry: The Core Battleground for IXH1220

1.1 Why Semiconductor Processes Use IXH1220

Edwards IXH1220 is the mainstream compact dry pump in 6-inch / 8-inch wafer fabs:

· Moderate pumping speed (100-300 m³/h)

· Small footprint, fits small PECVD and etching machines

· 12-18 month maintenance cycle

1.2 Typical Applications of IXH1220 in Semiconductor Processes

1.3 Special Value of A200HP High-Nickel Version

Suitable Processes:

· Polysilicon etching (with Cl₂/BCl₃)

· Aluminum etching (with Cl₂/BCl₃)

· Dielectric etching (with CF₄/SF₆)

Advantages:

· Ni ≥16%, corrosion-resistant lifespan extended 3x

· Dynamic balance Grade G2.5 @ 12000 RPM

· Direct replacement for standard rotors (PN: TX110044569-573)

1.4 Top 5 Maintenance Points in Semiconductor Industry

· A200HP high-nickel vs standard rotor selection: Etching processes with Cl₂/BCl₃/SF₆ must use A200HP high-nickel version

· HVHP / LVHP stator selection: Select by process pressure ratio

· Shaft seal lifespan: 8000-12000h in high-cleanliness chambers, must replace on time

· Sintered filter clogging: Wafer fab 24/7 operation, clean/replace every 3 months

· Wave spring failure: Causes bearing noise, rotor axial movement

II. Flat Panel Display (FPD) Industry

2.1 FPD Process Characteristics

· Large-area vacuum chambers (Gen 6 / Gen 8.5)

· Long pump-down time (30-45s to working vacuum)

· Dry pump needs long-term stable operation

2.2 IXH1220 in FPD Industry Applications

III. Solar Photovoltaic Industry

3.1 Photovoltaic Process Characteristics

· Mass production, cost-sensitive

· Relatively clean process gas (no strong corrosion)

· Standard version rotors meet requirements

3.2 IXH1220 Parts Selection Recommendations

IV. Vacuum Metallurgy & Heat Treatment

4.1 Process Characteristics

· High temperature (1000-2000℃)

· Contains metal vapor and dust

· Dry pump backing requires reliable filtration

4.2 Parts Wear Sequence

· Stage 1 (3-6 months): Oil mist filter saturation

· Stage 2 (6-12 months): Shaft seal leakage

· Stage 3 (12-24 months): Rotor end face wear

· Stage 4 (24-36 months): Stator end face wear

V. Laboratory / Small Batch Production

5.1 Laboratory Features

· Variable processes (different experiments)

· Frequent starts

· High reliability requirements

5.2 IXH1220 in Laboratory Applications

· Small PECVD coating

· Surface analysis (XPS, AES)

· Vacuum leak detection

· Material preparation

Parts specialty:

· Standard rotors are sufficient

· Sintered filter for high cleanliness

· T-type filter for low cleanliness

VI. Maintenance Case Studies

Case 1: 6-Inch Wafer Fab IXH1220 Abnormal Vibration

Symptoms:

· Pump noise, vibration value ≥4.2 mm/s

· Pump-down time extended from 25s to 50s

· Motor current fluctuation ±12%

Diagnosis:

· X3 rotor (TX110040255) end face wear 0.05mm

· Wave spring (TX120040029) fatigue

· Shaft seal leakage causing bearing water ingress

Solution:

· Replace X3 rotor (TX110040255) — Standard version (no Cl₂ in process)

· Replace wave spring (TX120040029, TX120040007)

· Replace shaft seal (TX120010010) + shaft sleeve (TX120020078)

Case 2: FPD Gen 6 PECVD Vacuum Drop

Symptoms:

· Process chamber vacuum dropped from 1×10⁻⁴ Pa to 5×10⁻³ Pa

· Roots pump IXH1220 temperature rise 20℃

Diagnosis:

· 4TH stator (TX110020226) end face wear

· 3RD stator (TX110020225) clearance out of spec

· Sintered metal powder filter-1220 (TX150050009) saturated

Solution:

· 4TH stator (TX110020226)

· 3RD stator (TX110020225)

· Sintered metal powder filter-1220 (TX150050009)

Case 3: Photovoltaic PECVD IXH1220 A200HP High-Nickel Rotor Corrosion

Symptoms:

· Process with HF concentration fluctuation

· Rotor end face showed corrosion pits within 6 months

Diagnosis:

· Original standard rotor (Ni ≤5%) not HF-resistant

· Must upgrade to A200HP high-nickel version

Solution:

· X4 A200HP high-nickel rotor (TX110044571) — Full replacement

· Y4 A200HP high-nickel rotor (TX110044572) — Full replacement

· LV A200HP high-nickel rotor (TX110044572) — Full replacement

Case 4: Laboratory IXH1220 Long-Term High Load

Symptoms:

· Rotor noise after 20 months of operation

· Vacuum degree decreased

Diagnosis:

· X4 rotor (TX110040257) dynamic balance failure

· Motor end wave spring (TX120040007) fatigue

· Sintered metal powder filter-1220 clogging

Solution:

· X4 rotor (TX110040257)

· Motor end wave spring (TX120040007)

· Sintered metal powder filter-1220 (TX150050009)

VII. Industry Application Quick Selection

What is your industry?

├─ Semiconductor (6/8 inch wafer fab)

│   ├─ Standard etching → IXH1220 standard rotor

│   ├─ Cl₂ etching → A200HP high-nickel rotor (TX110044569-573)

│   ├─ PECVD → IXH1220 standard rotor + sintered filter

│   └─ Sputtering → IXH1220 standard rotor

├─ FPD (Flat Panel Display)

│   └─ IXH1220 + A200HP combination

├─ Photovoltaic

│   └─ IXH1220 standard version complete set

├─ Vacuum Metallurgy

│   └─ IXH1220 + sintered filter

└─ Lab/Small Batch

    └─ IXH1220 + T-type filter

VIII. Key Parameter Comparison

More stars = more recommended.

IX. FAQ

Q1: Must etching processes use A200HP high-nickel rotors?

A: Yes when containing halogen gases (Cl₂/BCl₃/SF₆), otherwise standard rotors will corrode through in 3-6 months.

Q2: Can A200HP high-nickel rotors and IXH1820H be interchanged?

A: Same Ni content, but A200HP has micro-adjustments on IXH1220 mating surfaces. Cross-model interchange is not recommended.

Q3: Difference between HVHP and LVHP stators?

A: HVHP for high pressure ratio (e.g., process pressure starting 1-100 Pa), LVHP for low pressure ratio (e.g., 0.1-1 Pa).

Q4: Can IXH1220 sintered filter-1220 and Y-type mist filter be used together?

A: Yes. Sintered filter has high precision (5-10μm), Y-type intercepts oil mist (0.5-1μm), combination use is more effective.

Q5: For upgrading customer's old IXH1220, which parts to prioritize?

A: Prioritize shaft seal, wave spring, sintered filter (best cost-effectiveness), then consider A200HP high-nickel rotors.