For all of Parylene’s strengths, it has one key drawback—Parylene’s resistance to ultraviolet (UV) radiation is limited. Most formulations of Parylene gradually yellow when exposed to the kind of UV light that’s produced by the sun. While this isn’t a problem when Parylene gets used to conformally coat a printed circuit board that’s sealed in […]
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Parylene offers the best protection against solvents of any conformal coating. It is also brings to the table excellent moisture and gas protection, very high dielectric strength, and is bio-compatible. Even with all of these benefits, there are still some disadvantages to using parylene versus other conformal coatings.
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