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How GLUDITEC AOI is Setting a New Benchmark in Conformal Coating Inspection

In the fast-changing world of electronics today, safeguarding printed circuit boards (PCBs) and ensuring their long-term reliability is essential. Environments that are harsh—marked by high humidity, extreme temperatures, corrosive gases, or salt spray—require a careful approach to conformal coating application. The effectiveness of this coating is vital for preventing defects, avoiding heat buildup, and maintaining consistent performance over time.

Moisture on PCB without protective layer
Corrosion on PCB without protective layer

Traditional techniques for measuring the thickness of conformal coatings, whether in wet or dry states, have significant drawbacks. Wet thickness is commonly measured with a wet film gauge, while dry thickness relies on tools like micrometers, eddy current devices, or ultrasonic methods. However, these standard practices often lead to inconsistencies due to user error and require a ground plate; they also necessitate measurements taken from separate coupons instead of directly from the PCB itself.

Wet Film Gauge
Coating Thickness Micro Meter

Introducing the GLUDITEC AOI Conformal Coating Inspector—a groundbreaking innovation in coating measurement technology. Our advanced inspector utilizes Chromatic Confocal Microscopy (CCM), an innovative optical method known for its high precision in analyzing both 2D and 3D surfaces. This modern technique enables exceptional accuracy in measuring both wet and dry conformal coating thickness directly on PCBs.

Key advantages of the GLUDITEC AOI Conformal Coating Inspector

  • Improved Precision: Obtain accurate measurements with minimal user involvement, addressing the shortcomings of traditional approaches
  • Direct Assessment: Measure coatings on the actual PCB rather than relying on separate samples for more relevant insights
  • Versatility: Effectively measure both wet and dry coatings to ensure thorough analysis at any stage.

  • Consistency: Remove user-related inconsistencies and eliminate the requirement for a ground plate to simplify measurement procedures while boosting reliability.