N₂ atmosphere prevents oxidation during PCB reflow soldering. Improved wetting, reduced voiding, fewer defects — especially critical for fine-pitch 0201, 01005, and micro-BGA components.
N₂ reduces O₂ to <50 ppm in the reflow zone. No oxide formation on solder joints during reflow. Better intermetallic bond formation and joint reliability.
N₂ atmosphere enables reliable soldering of 0201, 01005, micro-BGA, and QFN components. Reduced tombstoning, head-in-pillow, and solder balling defects.
Reduced solder paste consumption (lower flux activity needed) and fewer defects = less rework. First-pass yield increases from 95% to 99%+.
N₂ generation vs. bottled N₂ or liquid N₂: 60–80% cost reduction. Payback typically 8–14 months for a medium-volume SMT line.
PSA at 99.9%+ purity
Buffer tank for consistent flow
Mass flow controller per zone
N₂ injected into reflow tunnel
Online O₂ analyzer in reflow zone
| Parameter | Value |
|---|---|
| N₂ Purity | 99.9% – 99.99% |
| O₂ in Reflow Zone | <50 ppm |
| Flow Rate | 10–80 Nm³/h per oven |
| Pressure | 5–7 bar |
| Defect Reduction | Tombstone: −80% |
| First-Pass Yield | 95% → 99%+ |
High-volume SMT lines. Consumer electronics, automotive, medical devices.
ECU, ADAS modules. High-reliability joints for automotive lifetime.
Mission-critical electronics. Zero-defect soldering with full traceability.