Design for Reliability: PCBs - DfR Solutions

Typical Creep Corrosion• Corrosion product is poorly conductive (resistance of about 1Mohm).• Conductivity is higher when the humidity is high.• Field returns often function fine – since corrosion product has dried out.• Features most sensitive to leakage current will trigger the system failure (failingsymptoms can vary system-to-system).• Visual inspection is often required to diagnose.© 2004 - 2007 2010