Semiconductor Process Gas Control Solution – MKS Instruments P8A-29343 / P5A-28219 / P8A-29344 | P-Series Pressure-Insensitive MFC
Where This Product Is Used
The MKS P8A-29343, P5A-28219, and P8A-29344 are pressure-insensitive mass flow controllers engineered for precision gas delivery in demanding semiconductor and advanced manufacturing environments. These units are deployed in:
- Chemical Vapor Deposition (CVD & PECVD) — Stable precursor gas flow regardless of upstream pressure fluctuations, critical for uniform thin-film deposition on 200mm and 300mm wafers.
- Atomic Layer Deposition (ALD) — Pulse-accurate gas metering for Al₂O₃, HfO₂, and TiN gate dielectric processes where sub-sccm repeatability is mandatory.
- Etch & Strip Systems — Reliable delivery of CF₄, NF₃, and O₂ in plasma etch chambers where process pressure varies between recipe steps.
- Diffusion Furnaces & Oxidation Tubes — Long-duration, drift-free flow control for O₂, N₂, and H₂ ambient processes.
- Vacuum Coating & PVD Systems — Reactive gas (Ar, O₂, N₂) management in sputtering and evaporation chambers.
- R&D Gas Panels & Laboratory Reactors — Flexible, multi-gas compatibility for process development and characterization.
Technical Specifications
| Attribute | Detail |
|---|---|
| Part Numbers | P8A-29343 / P5A-28219 / P8A-29344 |
| Manufacturer | MKS Instruments |
| Series | P-Series (P8A / P5A) |
| Type | Pressure-Insensitive Mass Flow Controller (PI-MFC) |
| Operating Principle | Thermal mass flow sensing with pressure-insensitive bypass |
| Pressure Insensitivity | Flow accuracy maintained across varying inlet/outlet pressures |
| Communication Interface | Analog (0–5 VDC / 4–20 mA) or digital (RS-485 / DeviceNet per config) |
| Wetted Materials | 316L SS, Hastelloy C-22, EPDM / Viton seals (process-dependent) |
| Weight | 2,600 g |
| Mounting | Surface-mount (D-sub connector, standard MKS footprint) |
| Compatible Gases | N₂, Ar, O₂, H₂, CF₄, NF₃, SiH₄, NH₃, and corrosive process gases (confirm per model) |
| Condition | Refurbished / Tested — Functional equivalent to OEM specification |
Why Engineers Specify This Model
- Pressure-Insensitive Design — Eliminates the need for upstream pressure regulators in many installations, reducing BOM cost and panel footprint.
- Multi-SKU Interoperability — P8A-29343, P5A-28219, and P8A-29344 share compatible mounting and signal interfaces, simplifying spare-parts management across tool generations.
- Proven MKS Reliability — MKS Instruments is the OEM supplier to AMAT, Lam Research, TEL, and ASML tool platforms; these controllers meet the same performance baseline.
- Drop-In Replacement — Standard D-sub pinout and MKS footprint allow direct substitution without gas-panel re-engineering.
- Reduced Downtime Risk — Stocking this unit as a critical spare eliminates multi-week OEM lead times during unplanned tool outages.
Complete System Bill of Materials
For a complete gas delivery sub-system using these MFCs, engineers typically specify:
- MKS 247D / 647C Multi-Channel Readout & Control Unit
- MKS 122A / 722A Baratron Capacitance Manometer (upstream pressure reference)
- MKS 153 / 248 Exhaust Valve or Throttle Valve (downstream pressure control)
- Swagelok VCR / VCO Face-Seal Fittings (1/4″ or 1/8″ per panel design)
- Stainless Steel Surface-Mount Gas Panel (SMB or modular stick format)
- MKS Type 1179 / 1480 Isolation Valve (upstream shutoff)
Compliance & Industry Standards
- CE Marking — Electromagnetic Compatibility (EMC) Directive 2014/30/EU
- RoHS Compliant — Restriction of Hazardous Substances Directive 2011/65/EU
- SEMI S2 / S8 — Safety guidelines for semiconductor manufacturing equipment
- ISO 9001:2015 — MKS Instruments quality management system certification
- Calibrated to NIST-traceable standards (N₂ equivalent, unless otherwise specified)
Quality Assurance & Sourcing
All MKS flow controllers listed on Konmask.com undergo a structured refurbishment and verification protocol before shipment:
- Visual & Mechanical Inspection — Connector integrity, body condition, and label verification against OEM part number.
- Leak Test — Helium or pressure-decay leak check at rated inlet pressure.
- Flow Calibration Verification — Setpoint linearity and repeatability confirmed on calibrated test bench.
- Functional Burn-In — Minimum 24-hour operational test under representative conditions.
- ESD-Safe Packaging — Shipped in anti-static bags with foam cushioning and moisture barrier.
How to Source This Part
Ready to order or need a formal quotation for procurement?
- Add to Cart — Immediate checkout available for stocked units.
- Request a Quote (RFQ) — Email [email protected] with your required quantity, delivery timeline, and any calibration gas requirements.
- Bulk / OEM Orders — Volume pricing available for 3+ units. Contact us for a tiered quote.
- Lead Time — In-stock units ship within 1–3 business days. EXW Xiamen, China. DHL / FedEx international express available.
- Export Compliance — Buyer is responsible for verifying import regulations in their jurisdiction. ECCN classification available on request.
Application-Specific FAQ
Q: Can P8A-29343 and P8A-29344 be used interchangeably?
A: They share the P8A platform and similar footprint, but flow range and gas calibration may differ. Confirm the full part number and calibration gas before substitution. Contact us for a datasheet comparison.
Q: What is the difference between P8A and P5A series?
A: The P5A (e.g., P5A-28219) is a smaller-body variant optimized for lower flow ranges, while P8A handles higher flow rates. Both are pressure-insensitive and use compatible signal interfaces.
Q: Is recalibration required after installation?
A: Units are shipped calibrated to N₂ equivalent. If your process uses a different gas (e.g., SiH₄, NF₃), a gas conversion factor (GCF) must be applied or the unit recalibrated. We can arrange third-party recalibration on request.
Q: Do you provide a warranty?
A: Yes — 90-day functional warranty covering defects in workmanship and calibration drift beyond OEM specification. Does not cover damage from improper installation or incompatible process gases.
Q: Can you supply the MKS 247D controller to pair with this MFC?
A: Yes. Contact us for availability and bundle pricing on complete gas delivery sub-systems.
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