Model types
ExactA direct mathematical relation with no empirical fitting.
Published modelA model published in a standard, paper or application note. The implementation follows the published equations within the stated range.
ApproximateA fitted or simplified model that is useful for estimation but should not be treated as exact.
ExperimentalA model with limited confidence or an incomplete evidence base. Treat the result as a starting point only.
General limitations
- Results are estimates, not a substitute for a field solver.
- The PCB manufacturer’s layer-stack data, copper roughness and actual etch geometry can change the result.
- Thermal results depend on airflow, copper area, planes, nearby components and enclosure.
- Current results are temperature-rise estimates, not fuse ratings or reliability guarantees.
- Always check safety-critical clearances and current paths against the applicable standard and your PCB manufacturer.
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