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Design For Conformal Coating

Learn how to optimize PCB layouts for conformal coating applications. This guide covers component placement, cleanliness requirements, masking methods, and more to streamline the coating process.

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Design For Conformal Coating

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  1. Design For Conformal Coating

  2. Introduction Circuit protection (especially conformal coating) requirements are not necessarily considered at the PCB design stage Key factors to consider are: Location of ‘keep out’ areas Proximity of ‘keep out’ areas to critical components/areas Component topography

  3. Design Considerations Check that the solder resist/components are compatible with the selected conformal coating. Location of components and track should be optimized for coating application method. Design out “through hole vias” where required. No silicon based compounds on board. Add tooling holes for the application method if automated.

  4. Design Considerations Cleanliness requirements, clean or no clean and flux type. Areas to be masked and method of masking. Conformal coating selected. Application method. Thickness specification. Inspection standards.

  5. Design For Conformal Coating Designing the PCB layout considering conformal coating applications can reduce the complexity and cost of the coating process

  6. Question Time

  7. HumiSeal • 295 University Avenue •Westwood • MA 02090 • USA Tel: +1 781 8332 HumiSeal Europe • 505 Eskdale Road • Winnersh Wokingham • Berkshire • RG41 5TU • United Kingdom Tel: +44 (0)1189 442 333 www.humiseal.com

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