HEAT SINK; Thermal Resistance: 9.4°C/W; P; HEAT SINK; Thermal Resistance: 9.4°C/W; Packages Cooled: TO-3; External Width - Metric: 45.21mm; External Height - Metric: 12mm; External Length - Metric: 45.21mm; External Diameter - Metric: -; Heat Sink Material: Aluminium; Colour: Black