HEAT SINK TO-220/218 3.7°C/W; Packages Cooled:TO-218 TO-220; Thermal Resistance:3.7°C/W; External Height - Metric:28mm; External Width - Metric:50mm; External Length - Metric:75mm; External Diameter - Metric:-; Heat Sink Material:Aluminium; External Height - Imperial:1.1"; External Width - Imperial:1.97"; External Length - Imperial:2.95"; External Diameter - Imperial:-; Product Range:-; SVHC:No SVHC (12-Jan-2017); Surface Finish:Black Anodised