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In PCBA manufacturing, waterproofing plays a critical role in ensuring durability and reliability by protecting circuit boards from water and other liquid damage. This is especially crucial for outdoor and industrial applications. Below, we introduce two common and effective methods for waterproofing PCBA circuit boards:

1. Traditional Conformal Coating

Conformal coatings are among the most widely used products for waterproofing PCBA. These coatings use solvent-based organic resins enhanced with pigments, fillers, and additives for protection against water, corrosion, and fire.

Advantages:

  • Excellent physical durability, providing water resistance, wear resistance, and corrosion protection with long-lasting performance.
  • Easy to apply via brushing for a quick protective layer.

Drawbacks:

  • High VOC (volatile organic compound) content, producing strong odors and potentially harming the environment and human health over time.
  • Requires skilled professionals for precise application.
  • Prone to cracking, which can compromise its function and appearance.
2. Advanced Nano Waterproof Coating

Nano technology has revolutionized various industries, including electronics, medical devices, and textiles. Nano waterproof coatings offer a highly efficient alternative to traditional conformal coatings, with the potential to lead the waterproof materials industry in the near future.

Advantages:

  • Made with modified resin, it is eco-friendly, non-toxic, odorless, and non-flammable.
  • Achieves ultra-thin layers (as thin as 1 μm) with high density.
  • Provides exceptional waterproofing and corrosion resistance, passing IPX6, IPX7, IPX8, dual 85 humidity-temperature tests, and over 200 hours of neutral salt spray testing.
  • Features low viscosity, enabling a simple dip-coating process.
  • High cost-efficiency: ultra-thin layers reduce material consumption and costs compared to traditional methods.

If you’re looking for high-performance waterproofing solutions for your PCBA products, I’d be happy to assist. Let’s explore how these advanced techniques can meet your specific requirements.