The formation of conductive paths through the migration of metal ions between tracks with different potentials under the influence of humidity is referred to as migration. The transport of the material is preferentially in the direction of the electric field. On small structure, this effect is of significant practical importance. This migration can lead to malfunctions, in the worst case it can lead to complete failure of the electronic due to shorts. Silver has a strong tendency to migrate, other metals such as copper and tin as well, albeit at a slower rate.