To Clean or Not To Clean Before Conformal Coating
Coating
23/1/2025
With electronics invading every part of daily life, it is inevitable that—at some stage in the product’s life span—it will be exposed to high humidity/moisture; hence the need for a conformal coating. Also, for equipment to work, it needs a bias; therefore, the only item that can be easily removed is ionic contamination.Flux residue is not the only source of Ionic contamination. Handling the PCAs during assembly can lead to finger salts being deposited on the board and components. Any previous process may have left contamination on the board, including bare-board manufacturing.
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