Vertical solder fill of hole must be ACCEPTABLE if: -> 75% of the hole height for components less than 14 leads. ->50% or 1.2mm (whichever is less) for each lead that is connected to thermal plane on components less than 14 leads. ->50% or 1.2mm (whichever is less) of the hole height for components more than 14 leads. Case: -less than 100% solder fill may NOT BE ACCEPTABLE in some applications (e.g. thermal shock, electrical performance) and the User is responsible in identifying these criteria to the Manufacturer.