Welcome To The Electronics Cooling Calculator


This site provides visitors with a quick, cost free means of estimating component temperatures in electronic products. Calculations performed by this website are based on textbook-style analysis and are typically accurate to +/- 25%. Results obtained here should be used in conjunction with more detailed numerical analysis and experimental data.


Textbook calculations (a.k.a hand-calculation or back-of-the-envelope-calculation) are a vital, and typically skipped first step to any product analysis. A quick calculaton can give the analyst usful estimates of product performance, allowing one to assess the feasibility of new concepts in hours, not weeks. The text-book analysis can weed out weak concepts and allow the analyst to focus on concepts that are likely to succeed. Additionally, a text-book calculation can be calibrated to match experimental, or other trusted data. After calibration, one can expect a +/- 5% accuracy with future product evolution design modifications.

What you need

In order to perform an electronics cooling analysis, certain information is required. You will need to mentally idealize your product into a flow channel comprised of vents, fans and heatsinks. Basic fan performance data (maximum pressure and maximum flow) is needed. You will input vent and heatsink geometries. You will need to provide the case/heatsink interface thermal resistance and junction-to-case thermal resistance, as well as the component power.