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Search can run engineering calculations inside the answer—not a separate calculator app. PartGenie picks the audit that fits your question, shows the formulas, runs Pass / Fail checks when limits apply, and attaches an Intelligent UI panel you can tune without a new search.
Resistor power rating audit with sliders for voltage, resistance, and watt rating

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Which calculators appear today

PartGenie maps your question to an audit panel. The set grows over time; these are the main ones shipping now: When a limit is missing, PartGenie may assume reasonable defaults (for example ambient 25°C or a typical θJA) and say so in the answer—or stress-test above your stated load (e.g. 400mA when you asked 200mA) so you see headroom, not only nominal.
Name the part or paste θJA / Tj(max) from the datasheet when you have them. PartGenie can ground limits in manufacturer data; generic audits still work with numbers you provide in the question.

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How to ask (example queries)

Stay in Search. Use natural language with numbers and units. You do not need a special command.

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Resistor power & rating

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LDO / linear regulator thermal

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Mixing part context with the calc

If the question is ambiguous, answer in chat first—then use Try different inputs in the panel instead of re-searching.

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Intelligent UI — tune parameters locally

LDO answer with Electrical Pass and Thermal Fail checks
Expanded thermal panel with predicted Tj versus limit
After the written answer:
  1. Open the audit panel (for example Resistor power rating audit or Power dissipation & junction temperature).
  2. Use Try different inputs (recalculates here only) — sliders or fields for voltage, current, resistance, rating, θJA, etc.
  3. Watch margin, Pass/Fail chips, and charts (such as predicted Tj vs limit) update instantly in the browser.
That local recalc does not spend another search credit. Use it for sweeps: higher ambient, worse θJA, or the next standard resistor wattage.

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What to trust

  • Calculators use standard EE formulas shown in the answer—verify against your datasheet and application notes.
  • Linear thermal models are estimates; real parts may current-limit, fold back, or hit thermal shutdown earlier than a simple Tj estimate predicts.
  • For procurement and sign-off, cross-check critical limits on the original datasheet or specification chat.