HEAT SINK TO-220/218 24°C/W; Packages Cooled:TO-220; Thermal Resistance:20°C/W; External Height - Metric:10.2mm; External Width - Metric:31.7mm; External Length - Metric:17.8mm; External Diameter - Metric:-; Heat Sink Material:Aluminium; External Height - Imperial:0.4"; External Width - Imperial:1.25"; External Length - Imperial:0.7"; External Diameter - Imperial:-; Product Range:-; SVHC:No SVHC (17-Dec-2015); Fixing Hole Diameter:3.7mm; Surface Finish:Black Anodised