Mass Flow Controllers (MKS 1179A)

Description

1. Product Overview

The MKS 1179A Mass Flow Controller is a precision thermal mass flow control instrument engineered for accurate measurement and regulation of gas streams in mission-critical semiconductor, thin-film, and industrial vacuum processes. Its primary industrial use lies in deposition, etch, and sputtering systems where repeatable gas flow directly determines yield and film uniformity. The key value proposition is sub‑1% setpoint accuracy with exceptionally fast settling time, reducing process variability and material waste. Strategically, the MKS 1179A remains a benchmark reference in the aftermarket and retrofit supply chain because it delivers OEM‑grade performance for legacy tool sustainment without requalification costs.

2. Key Specifications & Technical Characteristics

• Flow Ranges: Available from 10 sccm to 30 slm (N₂ equivalent), full-scale ranges customizable

• Accuracy: ±1.0% of setpoint (20–100% of full scale); ±0.2% of full scale (below 20%)

• Repeatability: ±0.5% of full scale

• Response Time: <2 seconds to within ±2% of setpoint (typical)

• Materials of Construction: 316L stainless steel (wetted path), Viton® or Kalrez® seals (optional); nickel‑plated aluminum housing

• Leak Integrity: <2 × 10⁻¹⁰ atm·cc/sec (He mass spectrometer tested)

• Physical Characteristics: Form – Compact in‑line unit; dimensions – 4.76″ L × 3.0″ W × 4.2″ H; weight – 2.1 lb (0.95 kg)

• Electrical Interface: 15‑pin D‑sub connector; ±15 VDC isolated power input; 0–5 VDC command/monitor signal

• Pressure Rating: 500 psig (34.5 bar) maximum

• Operating Temperature: 5°C to 50°C

• Packaging: Individually ESD‑safe foam‑lined box, triple‑bagged Class 10 cleanroom compatible; each unit shipped with NIST‑traceable calibration certificate

• Shelf Life: 5 years in original unopened packaging (calibration recommended annually under active use)

3. Core Industrial Applications

• Semiconductor Front‑End Manufacturing: Etch (dielectric, metal, Si) and PECVD – the 1179A provides unmatched shot‑to‑shot repeatability, directly improving die yield by eliminating gas‑related drift.

• Thin‑Film Coatings (Optical, Magnetic, Barrier): Sputtering and evaporation systems – linear flow control across 1–100% of range reduces scrap from non‑uniform deposition rates.

• Analytical & R&D Gas Panels: GC, GC‑MS, and calibration gas stations – low zero drift and fast stabilization cut daily requalification time by up to 40% vs. analog thermal mass flow meters.

• Industrial Vacuum Coating (Web/Glass): Low‑pressure gas injection for reactive sputtering – compatible with corrosive gases (with seal upgrade), extending service intervals 2x versus elastomer‑sealed competitors.

Why better than alternatives: Direct pin‑to‑pin compatibility with legacy MKS control systems eliminates controller re‑engineering. Faster settling (<2s) means shorter process recipe time. Lower heat‑to‑flow offset reduces warm‑up waiting periods.

4. Competitive Advantages

• Quality Consistency: Every unit undergoes 100% automated test against 21 data points (including linearity, hysteresis, temperature coefficient) – no batch sampling. Process control CPk > 1.33.

• Supply Reliability: Dual‑sourced components with 12‑month average inventory holding; same‑week shipment for 15 most common ranges. Last‑time‑buy support for discontinued flow ranges.

• Logistics Capability: Global warehousing (US, EU, SEA) with export packing to ISTA‑3A standards. DDP / DAP terms available for key industrial zones.

• Price Competitiveness: 25–35% lower than factory new equivalent units for refurbished Class A grade; full OEM performance at aftermarket price. Bulk multi‑unit discounts (≥10 pcs) available.

• Sustainability & Compliance: RoHS‑compliant assembly; lead‑free solder. Refurbished units reduce e‑waste by >80% versus scrapping. REACH and Conflict Minerals declaration provided on request.

• Technical Support: Full datasheet, pinout diagram, and valve driver tuning guide included. 90‑day calibration warranty with optional on‑site verification via remote diagnostics.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): BULK 20MT – this refers to combined product weight per shipment (not per controller). For MKS 1179A individually: MOQ = 5 units for stock orders; 1 unit available for sample/emergency orders at list price + 15%.

• Loading Capacity (MT per container):

  • 20‑ft standard container: ~2.6 metric tons (approx. 2,700 units of MKS 1179A, individually packed, palletized)

  • 40‑ft high cube container: ~5.4 metric tons (approx. 5,500 units)

Note: Bulk 20MT (20 metric tons) applies to a consolidated shipment of multiple product lines. For MKS 1179A‑only orders, typical pallet load is 450 kg (approx. 460 units per pallet, 4 pallets per 20‑ft container max due to volume constraints).

Lead Time: 5–7 business days ex‑stock (standard ranges); 3–4 weeks for non‑standard seals/flow ranges.
Incoterms: EXW (Taipei / Chicago / Rotterdam); CIF / CIP available for contract customers.