| Series | 421 |
| Package | Bulk |
| Part Status | Active |
| Type | Board Level, Extrusion |
| Package Cooled | TO-3, DO-5, Stud Mount |
| Attachment Method | Press Fit |
| Shape | Rectangular, Fins |
| Length | 3.000" (76.20mm) |
| Width | 4.750" (120.65mm) |
| Diameter | - |
| Fin Height | 2.625" (66.67mm) |
| Power Dissipation @ Temperature Rise | 50.0W @ 58°C |
| Thermal Resistance @ Forced Air Flow | 0.70°C/W @ 250 LFM |
| Thermal Resistance @ Natural | 1.16°C/W |
| Material | Aluminum |
| Material Finish | Black Anodized |
