Comparison : Item # 531002B02500G, 5310 Series 12.70 Millimeter (mm) Length and 25.40 Millimeter (mm) Height Extruded Dual Radial Board Level Heat Sink
Item # 531102B02500G, 5310 Series 12.70 Millimeter (mm) Length and 38.10 Millimeter (mm) Height Extruded Dual Radial Board Level Heat Sink
Item # 531302B02500G, 5310 Series 12.70 Millimeter (mm) Length and 63.50 Millimeter (mm) Height Extruded Dual Radial Board Level Heat Sink