The increasing use of electronic control units in harsh environments, in, especially, high reliability, safety-critical applications, demands full understanding and rigorous control of electrochemical reliability.
The production of electronic circuits involves more than 20 individual chemical process steps, most of which contain high levels of ionic matter. Electric potentials when combined with a damp or moist operating environment, coupled with the presence of ionic matter, can often increase the probability for dendritic, electrochemical reactions and premature, unpredictable circuit failures.
For these reasons the analysis of the surface insulation resistance (SIR) can be employed to assess electrochemical reliability of assemblies and thereby establish a qualified manufacturing process.
The increasing use of electronic control units in harsh environments, in, especially, high reliability, safety-critical applications, demands full understanding and rigorous control of electrochemical reliability.
The production of electronic circuits involves more than 20 individual chemical process steps, most of which contain high levels of ionic matter. Electric potentials when combined with a damp or moist operating environment, coupled with the presence of ionic matter, can often increase the probability for dendritic, electrochemical reactions and premature, unpredictable circuit failures.
For these reasons the analysis of the surface insulation resistance (SIR) can be employed to assess electrochemical reliability of assemblies and thereby establish a qualified manufacturing process