HEAT SINK TO-220/218 8.6°C/W; Packages Cooled:TO-218 TO-220; Thermal Resistance:8.6°C/W; External Height - Metric:41.2mm; External Width - Metric:51mm; External Length - Metric:19mm; External Diameter - Metric:-; Heat Sink Material:Aluminium; External Height - Imperial:1.62"; External Width - Imperial:2.01"; External Length - Imperial:0.75"; External Diameter - Imperial:-; Product Range:-; SVHC:No SVHC (17-Dec-2015); Fixing Hole Diameter:3.1mm; Slot Pitch:80mm