Definition
Electric current flowing through a unit cross-sectional area normal to the flow; it is represented by J and has SI units of A/m², with A/cm² also common in semiconductor work.
Application
Used in semiconductor device and interconnect analysis to quantify carrier/current transport and local electrical stress. High current density is a key driver of electromigration and can limit conductor and package reliability.
Related search terms
Electrical current density; current per unit area
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Related concepts
Evidence and further reading
- Evidence from nvlpubs.nist.govhttps://nvlpubs.nist.gov/nistpubs/Legacy/TN/nbstechnicalnote1338.pdf
- Evidence from ti.comhttps://www.ti.com/lit/pdf/slva525