12-Zone Nitrogen Reflow Oven DS-1204-N
The DS-1204-N is S&M’s flagship nitrogen reflow oven — engineered for Tier-1 EMS factories and OEM manufacturers with zero-defect soldering requirements. Combining 24 independently controlled heating zones (12 top + 12 bottom) with nitrogen atmosphere and external water-cooled chiller cooling, it delivers the maximum thermal profile precision available for high-complexity lead-free SMT production, including automotive ECUs, server motherboards, and power electronics.
| Model | DS-1204-N |
| Heating Zones | 12 (top) + 12 (bottom) = 24 zones |
| Cooling | External chiller (water-cooled) |
| PCB Width | 50–400 mm (adjustable) |
| Temperature Uniformity | ±1°C |
| Oxygen Level | 300–1000 ppm (adjustable) |
Full Technical Specifications
| Parameter | Specification |
| Model | DS-1204-N |
| Heating Zones | 12 (top) + 12 (bottom) = 24 zones |
| Cooling Zones | External chiller cooling (water-cooled) |
| Machine Dimensions | L7735 × W1650 × H1520 mm |
| Weight | 3500 kg |
| Total Power | 110 KW |
| Working Power | 20 KW |
| Temperature Range | 50–350°C |
| Temperature Uniformity | ±1°C |
| PCB Width | 50–400 mm (adjustable) |
| Conveyor Speed | 400–2000 mm/min |
| Nitrogen Consumption | 35–40 m³/h |
| Oxygen Level | 300–1000 ppm (adjustable) |
| Atmosphere | Nitrogen (N2) |
Who Should Choose This Model?
The DS-1204-N is the flagship nitrogen reflow oven for manufacturers where both maximum thermal precision and inert atmosphere protection are required simultaneously. It is the preferred choice for Tier-1 EMS factories, automotive electronics suppliers, and server/networking board manufacturers with the most demanding quality standards.
- Highest-complexity lead-free assemblies: Automotive ECUs, server motherboards, power modules, and any board with extremely varied component thermal masses — large power components alongside 0201 passives and fine-pitch ICs.
- Zero-defect requirements: The combination of 24 heating zones and nitrogen atmosphere minimizes solder defects (bridging, voiding, dewetting) to the lowest achievable level without a vacuum chamber.
- vs. N2 10-Zone DS-1003-N: Two additional zones (24 vs. 20 total) give finer control through every stage of the thermal profile. Higher N2 consumption (35–40 vs. 30–35 m³/h) and longer machine footprint (L7735 vs. L6567 mm) are the trade-offs for maximum profile capability.
- vs. Vacuum Reflow VTS-1013-N: The DS-1204-N offers higher throughput (continuous conveyor vs. vacuum cycle time) at lower capital and operating cost. Choose the DS-1204-N when solder void elimination is not required by your quality specification.
- Tier-1 EMS standard: The DS-1204-N is S&M’s recommended configuration for contract manufacturers with strict customer quality audits and IPC Class 3 assembly requirements.
Related Products
10-Zone Nitrogen Reflow Oven DS-1003-N
The most popular nitrogen reflow model — 20 zones, external chiller cooling, and lower N2 consumption. Ideal for EMS factories where 10-zone precision is sufficient.
Vacuum Reflow Oven VTS-1013-N
When nitrogen alone isn’t enough — the VTS-1013-N adds servo-driven vacuum to eliminate solder voids in power modules, IGBTs, and automotive electronics.
12-Zone Air Reflow Oven DS-1204
Same 24-zone thermal architecture in an air-atmosphere configuration. Lower operating cost when nitrogen atmosphere is not required by your process specification.
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