References / Measurement conventions
Thermal load bands
Lab conventionThe report groups a coil's estimated power dissipation into low (below 150 mW), moderate (150 to 500 mW), and high (500 mW and above) bands.
Where it appears in the report: Estimated Coil Power Dissipation
The evidence
These band edges are our convention for this class of small coil. We set them so the upper bands flag where a small coil's dissipation starts to approach what natural cooling can shed at a modest temperature rise. As a rough check, a small coil with a few tens of square centimeters of surface can shed a few hundred milliwatts by natural cooling alone before it warms up much. They aren't thresholds from a published standard.