Thermal Connection

Through hole pins with too many thermals or too much copper area in the thermal connections associated with them create poor solder joints.

The No Thermal category detects drills lacking thermals and, according to their size, report the total copper area associated with them.

The measurement value is calculated as <number of thermal spokes> * <width of spokes> * <layer thickness> (as found in the layer attribute .copper_weight * 1.35 [the thickness of 1 ounce of copper]).

If you work in metric units, multiply the number obtained for layer thickness by the translation factor 25.4.

The width of a spoke is measured from one side to the opposite side of the spoke gap. Measurements are cumulative.

Identified thermals are symbols of 3, 4, or 5 spokes. Thermals of more than five spokes, unsymmetrical thermals, or drawn thermals are not always recognized and are reported to category ‘No Thermal’.