When tires crush over gravel, high-frequency vibrations strike the lamp body.
When headlights endure 8+ hours of continuous use, LED temperatures skyrocket.
Every long-distance night drive, every off-road jolt—these are brutal tests for precision components. A headlight’s vibration resistance and heat dissipation directly determine its lifespan.
This is why our soldering process must relentlessly pursue perfection.
In order to give drivers a better product experience, compared with the traditional ordinary reflow soldering, we NAOEVO comprehensively uses vacuum reflow soldering, which can significantly improve the durability and thermal conductivity and electrical conductivity of the welded products.
Deep-Dive Analysis
Q:
Why Vacuum Reflow?
NAOEVO Senior Engineer
A:
Vacuum reflow soldering systems, though costly in both equipment and operation, represent cutting-edge technology pioneered by U.S. specialists and refined by German/Japanese welding experts.
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Originally developed for aerospace and military applications, this process delivers 3X greater structural reliability when applied to automotive lighting manufacturing.
LED headlights require ≤15% voiding rate. Conventional reflow soldering leaves excessive gas trapped, typically yielding 20% voids.
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In contrast, vacuum reflow soldering evacuates air before welding, leveraging pressure differentials to force out 95%+ bubbles—achieving <5% voiding. The result: significantly stronger, more durable, and reliable solder joints.
Q:
What Are The Benefits Of Using Vacuum Reflow?
A:
In the LED automotive lighting industry, vacuum reflow soldering technology significantly enhances solder joint integrity.
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With improved bonding contact, mechanical strength increases substantially—boosting thermal conductivity and vibration resistance.
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This results in dramatically improved durability and lifespan of the headlights.
1. Improving Thermal and Electrical Conductivity
Around 60% of electronic product failures are caused by rising temperatures.
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Traditional reflow soldering often leaves air bubbles, which can lead to solder paste carbonization, resulting in loss of original performance, overheating, or malfunction.
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In contrast, vacuum reflow soldering produces joints with higher mechanical strength, larger effective conductive areas, and lower thermal resistance — significantly improving heat and electrical conductivity, as well as extending the lifespan of the headlight.
2. Enhance Shock Resistance
Vacuum reflow soldering creates a pressure differential by evacuating air, forcing tighter contact between LED chips and copper substrates.Â
This enhances bonding precision, significantly improving headlight reliability and vibration resistance for superior durability.
Lab tests by the NAOEVO R&D team confirm: Our brand new LED headlights deliver 8X brighter output than conventional lights, zero void defects, 3X longer lifespan under extreme conditions.
