Plasma cleaning of PCBAs and electronic components removes surface contaminants and oxides through the use of plasma in a chamber. The type of gas used is contingent upon the desired goal. Typically with oxidation, inert gases, such as helium or argon, are used.
Foresite has utilized plasma cleaning in a variety of projects. One such project involved removing paralyene coating from lens covers to restore the clarity of the lens (without disturbing the coating on surrounding areas). Another project dealt with restoring the solderability of parts that had sat on a shelf for over a year and had oxidized, rendering the parts un-solderable. In both of the projects we were able to effectively restore the parts, meeting the client requirements.