Quartz Wafer Boats (300mm QUARTZ BOAT)

Description

1. Product Overview

The 300mm Quartz Boat is a high-precision, fused silica wafer carrier engineered for vertical and horizontal semiconductor furnace processes, including diffusion, oxidation, and LPCVD. Its primary industrial use is to support and transport 300mm silicon wafers during extreme high-temperature cycles while maintaining sub-micron particle control and minimal metallic contamination. The key value proposition lies in its exceptional thermal stability, creep resistance at up to 1,200°C, and dimensional accuracy—directly translating to higher wafer yields and reduced downtime. Strategically, this component is critical for advanced node fabrication (≤7nm), where any geometric deviation or particle generation can render an entire batch of wafers non-compliant.

2. Key Specifications & Technical Characteristics

• Chemical Composition / Material: High-purity fused quartz (amorphous silicon dioxide, SiO₂) – synthetic or electrically fused, non-porous

• Purity Level / Grade: ≥99.995% SiO₂; total metallic impurities (Na, K, Li, Ca, Mg, Fe, Cu, Ni, Cr) < 15 ppm; individual alkali content < 0.2 ppm

• Physical Characteristics:

  • Form: Precision-machined, multi-slot horizontal or vertical boat with pointed or flat supports

  • Color: Transparent (synthetic) or translucent (electrically fused)

  • Slot pitch accuracy: ±0.05 mm; warpage < 0.3 mm over 300 mm length

  • Surface roughness (Ra): < 0.8 μm

• Thermal Characteristics: Max continuous operating temperature: 1,200°C; softening point: approx. 1,650°C; thermal shock resistance: ΔT > 800°C

• Packaging Options: Class 10 (ISO 4) cleanroom double-bagged with ESD-safe vacuum sealing; individual slot protectors available

• Shelf Life: Indefinite under dry, contaminant-free storage (≤30% RH, no HF exposure)

3. Core Industrial Applications

• Primary Industries: Semiconductor fabrication (IDMs, foundries, OSATs), MEMS manufacturing, advanced packaging (3D integration), photovoltaic cell production (high-efficiency mono-PERC)

• Specific Operational Use Cases:

  • Low-pressure chemical vapor deposition (LPCVD) for Si₃N₄, polysilicon, and SiO₂ films

  • High-temperature oxidation (dry/wet O₂) and diffusion doping (B, P)

  • Annealing and post-etch high-temperature curing

• Performance vs. Alternatives (e.g., SiC or polysilicon boats):

  • Lower cost of ownership than SiC for ≤1,100°C processes

  • No metallic outgassing vs. coated graphite, eliminating cross-contamination risks

  • Superior dimensional stability over sintered quartz or ceramic alternatives, reducing wafer slippage and edge contact failures

  • Efficiency gain: Each boat supports up to 150 wafers per batch with < 0.2% contact-induced defect rate

4. Competitive Advantages

• Quality Consistency: Each boat is laser-inspected with 100% slot-pitch verification and particle count ≤ 5 particles (>0.3 µm) per critical surface. Statistical process control (SPC) data provided per batch.

• Supply Reliability: Dual-source fused quartz inventory (Momentive, Heraeus equivalent grade). Typical lead time: 15 working days for standard 300mm boats; safety stock held for top 50 global fabs.

• Logistics Capability: Climate-controlled, shock-encapsulated crating with vibration data loggers. Door-to-door delivery with air freight options available for emergency change-outs.

• Price Competitiveness: Tier-1 quality at 20–25% lower landed cost vs. incumbent European/Japanese suppliers via optimized precision molding (not just subtractive machining), reducing raw quartz waste.

• Sustainability & Environmental Benefits: Recyclable quartz scrap program; manufacturing process uses 100% hydroelectric power; no hazardous coatings or cleaning agents in production.

• Technical Support: Dedicated process engineering team available for retrofit dimensioning, thermocouple integration design, and lifetime prediction modeling. Full material traceability to quartz ingot lot.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): 5 units (for first-time qualification orders); 20 units for repeat standard contracts

• BULK 20MT Loading Capacity: Approx. 240 units per 20MT container (each unit ~83 kg including packaging)

• Loading per standard 20ft container (volume-limited, not weight-limited): 320 units (palletized, single-stacked)

• Note: Supply contracts available for 12/24/36 months with fixed pricing and consigned buffer stock at buyer’s site for Tier-1 fabs.