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Optimize the Dispensing Process with True 3D Inspection
The journey toward zero defects in dispensing is challenging but achievable. True 3D inspection technology has have emerged as a powerful ally in this quest to ensure the highest quality levels.
Technical Paper
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Authored By:
Axel Lindloff, Daniel Perry, Brent A. Fischthal
Koh Young Technology
GA, USA
Summary
Manufacturers increasingly rely on conformal coatings to enhance the reliability of their products in challenging environments. These coatings play a crucial role in protecting electronics from moisture, debris, corrosion, and mechanical stress, thereby reducing failure rates. However, ensuring the effectiveness of these coatings is challenging due to the limitations of current inspection methods.
The constraints of manual or 2D inspections prevent accurate measurement of critical aspects such as material thickness and coverage, especially for transparent materials. Consequently, today's conformal coating inspection processes lack the reliability offered by true 3D inspection.
Traditional laser-confocal and electron microscopes, although capable of measuring three-dimensional shapes, fail to inspect transparent materials due to their shallow penetration depth. Optical systems that use UV light are limited to simple 2D presence detection.
L.I.F.T. technology (Laser Interferometry for FluidTomography) provides a solution with non-destructive 3Dinspection, enabling precise measurement of wet and dryfluids, including material thickness, at production speeds.This technology utilizes low-coherence interferometry andNear-Infrared Light (NIR) to capture images throughmultiple layers of a fluidic structure, regardless oftransparency.
This presentation will consist of four sessions. It will start by examining the overall market situation, focusing on major applications in the SMT industry and highlighting several conformal coating inspection challenges. Following this, an update on potential solutions to overcome these challenges will be introduced. Finally, the presentation will explore updated methods to achieve a zero-defect process, surpassing current limitations.
Conclusions
The journey toward zero defects in dispensing is challenging but achievable. True 3D inspection technology has have emerged as a powerful ally in this quest, providing the accuracy, reliability, and flexibility needed to ensure the highest quality levels. By overcoming limitations of traditional inspection, 3D inspection enables users to detect defects early in the process, reducing waste, improving yields, and ultimately delivering better products to market.
As technology continues to evolve, it will play an increasingly central role in the future of manufacturing, driving the industry closer to the ideal of zero defects. For manufacturers committed to quality and continuous improvement, the adoption of true 3D inspection is not just an option—it is a necessity.
Initially Published in the SMTA Proceedings
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