Why can two matching numbers still be unsafe to compare?
They may be measured under different conditions. Temperature, supply voltage, load, package, airflow, frequency, or test mode can change what the value means.
Comparison Issues
Common issues when comparing technical datasheets
Questions about typical versus maximum values, absolute maximum ratings, operating conditions, hidden footnotes, package differences, and values that look comparable but are not.
Back to Engineering FAQsWhat is the risk with absolute maximum ratings?
Absolute maximum ratings are stress limits, not normal operating targets. They should not be treated as equivalent to recommended operating conditions or guaranteed performance.
Why are footnotes important?
Footnotes often define conditions, exclusions, package limits, derating, or special behavior. A comparison that extracts only the headline number can miss the reason that number is not equivalent.