• Don't mix plating materials on connector contacts, as this increases likelihood of corrosion. For instance, gold plated-to-gold plated is fine, tin-to-tin is fine. Gold-to-tin is bad.
  • Need your electronics to be exposed to the weather? Look into this stuff:
    • Conformal coating (if you can't put electronics in a sealed box)
    • IP rated connectors
    • Connector lubricant/grease
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