Junction Temperature Calculator
Estimate junction temperature from ambient temperature, device dissipation, and a user-supplied junction-to-ambient thermal resistance.
A QUICK WALKTHROUGH
How to use this tool
- Enter values in the displayed SI units.
- Review the assumptions and formula.
- Calculate locally; verify all design values independently.
Formula and limits
Tj≈Ta+Pd·θJA. θJA is board/package-dependent and this estimate is not a component rating or thermal validation. This is a simplified estimate and does not validate component ratings, safety, or process quality.
Privacy
Inputs are calculated locally and are not uploaded.
GOOD TO KNOW
Common questions
Does this validate a design or casting process?
No. It evaluates the stated model only.