| PartNumber | HSE-B20381-040H | HSE-B20380-040H-01 | HSE-B20350-NP |
| Description | Heat Sinks 38.1x32x20mm w/pin extrusion TO-220 | Heat Sinks 38x29x12.5mm w/pin extrusion TO-220 | Heat Sinks 35x29x12mm w/pin extrusion TO-220 |
| Manufacturer | CUI Inc. | CUI Inc. | CUI Inc. |
| Product Category | Heat Sinks | Heat Sinks | Heat Sinks |
| RoHS | Y | Y | Y |
| Product | Heat Sinks | Heat Sinks | Heat Sinks |
| Mounting Style | PCB | PCB | PCB |
| Heatsink Material | Aluminum | Aluminum | Aluminum |
| Fin Style | Extruded Axial Fin | Extruded Axial Fin | Extruded Axial Fin |
| Thermal Resistance | 11.54 C/W | 10.27 C/W | 12.1 C/W |
| Length | 38.1 mm | 38 mm | 35 mm |
| Width | 32 mm | 34.5 mm | 29 mm |
| Height | 14 mm | 12.5 mm | 12 mm |
| Designed for | TO-220 | TO-220 | TO-220 |
| Packaging | Bulk | Bulk | Tray |
| Series | HSE-BX-040H | HSE-B20X-01 | - |
| Brand | CUI | CUI | CUI |
| Height in | 0.55 in | 0.49 in | 0.47 in |
| Length in | 1.5 in | 1.49 in | 1.377 in |
| Product Type | Heat Sinks | Heat Sinks | Heat Sinks |
| Factory Pack Quantity | 115 | 1200 | 120 |
| Subcategory | Heat Sinks | Heat Sinks | Heat Sinks |
| Width in | 1.25 in | 1.35 in | 1.14 in |
| Unit Weight | 0.818003 oz | 0.588017 oz | 0.465264 oz |