Derating Calculation -

Don’t Let Your Components Fry: A Practical Guide to Derating Calculation

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Have you ever designed a circuit that worked perfectly on the bench, only to fail catastrophically in the field? The culprit is often not a bad solder joint or a software bug, but heat . Don’t Let Your Components Fry: A Practical Guide

Components have theoretical maximum ratings printed on their datasheets. However, running a resistor at 100% of its rated power at 80°C ambient is a recipe for disaster. This is where comes in. The culprit is often not a bad solder

P_max = 1.0 × 0.538 = 0.538 Watts

Derating Factor = (70) / (130) = 0.538

Most datasheets provide a . You can calculate the maximum allowed power using this linear formula: