TO-220 3.8 f +.2 HOLE THRU .412 (10.5) MAX. .108 (2.75) .248 (6.3) .051 MAX. (1.3) .040 MAX. (1.0) .100 (2.54) .158 (4.0) MAX. .180 (4.6) .595 (15.1) MAX. .550 (14.0) MIN. .120 (3.05) PIN 1 + PIN 1 PIN 3 CASE PIN 2 PIN 3 Positive CT Suffix "C" .050 (1.27) CASE PIN 2 Negative CT Suffix "A" Dimensions in inches and (millimeters)