HEAT SINK, TO-220, 13°C/W; Thermal Resistance: 13°C/W; Packages Cooled: TO-220; External Width - Metric: 21mm; External Height - Metric: 28mm; External Length - Metric: 20mm; External Diameter - Metric: -; Heat Sink Material: Aluminium; External Width - Imperial: 0.83"; External Height - Imperial: 1.1"; External Length - Imperial: 0.79"; External Diameter - Imperial: -; Product Range: -; SVHC: No SVHC (15-Jan-2018); Fixing Centres: 21mm; Fixing Hole Diameter: 1.3mm; Surface Finish: Black Anodised