³Ô¹Ïtv / ENGINEERING EXPLANATIONArray population and span: inputs and limits01Column positionsCount grid positions, including documentedvacancies.02Row positionsCount from the package map; row letteringcan skip letters.03Actual populated terminalsCount actual terminals, not every nominalgrid position.04Uniform grid pitch · mmRectangular equal-pitch model; staggered ormixed-pitch arrays are excluded.Use the exact drawing and a declared revision. Examples are not approved process limits.Illustrative geometry only. Not to scale, a production setting or evidence of qualification.