Powder Coating For EMI Emissions
Q. I am powder coating a CRS enclosure and want to know what effect on EMI emissions suppression grounding the powder coat would have compared to a zinc plating finish (per ASTM 633 SC2). I know there are “conductive” powder coating paints available or I could mask certain area’s of the enclosure to get better surface contact, but I would rather not have to go that route, unless it is necessary. C. J.
A. There are some powder coatings that offer sufficient grounding for EMI emissions. I am sure that they are not as effective as metal plating (i.e. zinc plating). However, they may be good enough for your application. Try some and test to your
Powder coating is one of the most durable finishes that can be applied to industrial manufactured products, and offers excellent corrosion protection and is very safe because of its lack of volatile organic compounds.
This alternative to TGIC-based polyester powder coatings offers similar performance and enhanced transfer efficiencies.
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