Vacuum-Reflow ovens

Void-free soldering is a basic requirement in high-performance electronics. Life support devices, the control technology in aircraft industry, the driving assistance system in the automobile sector and power electronics in electric vehicles, all have one thing in common: they must run absolutely safely and error-free for many years. One condition for this approach is an almost voids-free solder join. Vacuum reflow process is a reliable way to reduce voids in the solder joints to a minimum.

Category	Vacuum-Reflow ovens
Our solution	SMT technologies
Supplier	SMT Thermal Discoveries

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Key benefits

Voids reduction up to 99%
Powerful vacuum pump (300m3/h) for fast and reliable vacuum process
Minimum vacuum value up to 1-10 mBar
Robust stainless steel vacuum chamber for long-term stable process
The vacuum chamber lid is coupled to the upper part of the oven, so the vacuum chamber is easily accessible after opening the oven for service

Vacuum Standard System – width of the vacuum chamber is 573 mm

W- Systems with enlarged the vacuum chamber 710mm width and 850mm length

FAQ

What are the advantages of the vacuum process?

The vacuum process is the most reliable process for reducing voids in the solder joint. Voids can be partially reduced by modifying the solder profile and using nitrogen, but we will not achieve the same results as when using a vacuum. By modifying the profile, we can get to the edge of the paste processing window. The vacuum process thus gives us more flexibility in setting the soldering process.

Is vacuum (vacuum module) “only” about adding this process to the peak zone?

No, it is not. A vacuum oven is a mechanically complex device. In addition to the vacuum module itself, it has many other mechanical, electrical and electronic elements that are necessary for operation.
SMT was the first to come to the market with an inline vacuum oven in 2009, so thanks to its many years of know-how, SMT can offer a complete and reliable solution.

Is a vacuum oven more maintenance intensive than a standard reflow oven?

Yes. A vacuum oven generally requires more attention than a standard reflow oven. But with SMT, maintenance is guaranteed to be less frequent and significantly easier than the competition thanks to the automatic lifting of the chamber lid.