TO-220 3-Lead Package Outline (Flow 34) (Reference LTC DWG # 05-08-1494) .390 – .415 (9.906 – 10.541) .147 – .155 (3.734 – 3.937) DIA .165 – .180 (4.191 – 4.572) SEATING PLANE .045 – .055 (1.143 – 1.397) .230 – .270 (5.842 – 6.858) .460 – .500 (11.684 – 12.700) .570 – .620 (14.478 – 15.748) .570 ± .015* (14.478 ± 0.381) .330 – .370 (8.382 – 9.398) .095 – .115 (2.413 – 2.921) .100 (2.54) BSC .050 (1.270) TYP .028 – .038 (0.711 – 0.965) *MEASURED AT SEATING PLANE CONTROLLING DIMENSIONS ARE IN INCHES .100 ± .010* (2.540 ± 0.254) .120 ± .007 (3.048 ± 0.178) .013 –0.023 (0.330 – 0.584) T3 (TO-220)(FLOW 34) 0801