Waterproofing for PCBA

2025-06-10

1213

"70% of PCBA Failures Are Preventable: Is Your Coating Strategy Costing You Millions?"

The Ultimate Guide to PCB Cirucits Protection --- How to choose the suitable protecting material / technique for your electronics device.

The Hidden Crisis in PCBA Protection

Did you know?

  • 80% of PCB failures in harsh environments are directly linked to inadequate coating choices.
  • Corrosion, moisture ingress, and thermal stress silently destroy $1.2B+ in electronics annually.
  • Your customers may inadvertently use the electronic devices in hazardous environments, leading to a substantial increase in your after-sales costs.

Imagine your IoT sensor corroding after 6 months... or a medical device failing due to salt spray. The stakes are high—but the solution is simpler than you think.

Why Your Coating Choice Defines Product Survival

The 3-Year Cost Trap of Conventional Coatings

While conformal coatings (e.g., acrylics, silicones) offer low upfront costs, hidden expenses pile up, especially for the devices that will be used under the harsh enviroment :

  • Rework frequency: Uneven coverage (pinholes, bubbles) forces 30% more repairs over 3 years.
  • Thermal bottlenecks: Thick layers reduce heat dissipation, increasing failure rates in high-power devices.

Parylene’s ROI Revolution:

  • Zero rework: Chemical vapor deposition (CVD) ensures 100% uniform, pinhole-free coverage—even under 0201 components.
  • IP68 Proof: Salt spray tests show zero corrosion after 1,000+ hours — especially ideal for marine and automotive applications.
  • Thermal stability: Operates from -200°C to 450°C, outperforming silicones in aerospace thermal cycling tests.

How We Cut Failures by 80%

Case 1: IoT Humidity Crisis Solved with Precision Coating

An Amercian IoT sensor company faced 20% field failures after their clients 3-6 months useage, due to circuit corrosion or short-circuits. After learning that their devices will be used in humid environments long-term, our team recommended using cost-effective standard acrylics conformal coatings.

Results:

  • Customer complaints dropped 80% within 6 months.
  • ROI: Saved $120K/year in warranty repairs / recall.
  • Key Insight: For cost-sensitive, high-volume IoT devices, optimized conformal coatings deliver rapid ROI without over-engineering.

Case 2: Automotive Listed Company Chooses Us

A NASDAQ-listed automobile company required ASIL-D compliance for all electronics modules. They partnered with us because we:

  1. Assemble automotive-grade PCBAs in our IATF-16949 certified facility.
  2. Apply Parylene in-house for extreme thermal resilience (-200°C to 250°C)

Outcomes :

  • Passed 2,000-hour salt spray tests (vs. 500-hour industry standard).

Comparison: No Coating vs. Conformal Coating vs. Parylene

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Direct Message Me, for professional PCBA & coating solution!

Exclusive Offer for Engineers & Procurement Teams:

  • Free PCBA Protection Solution Audit : Submit your projects information and receive a customized coating analysis within 48 hours.
  • Samples : First 5 clients get free PCB fabrication & Free Stencil & Free conformal coating for prototypes projects.