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| Part Number | HSE-B254-04H |
| Datasheet | HSE-B254-04H datasheet |
| Description | HEAT SINK EXTRUSION TO-220/TO- |
| Manufacturer | CUI Inc. |
| Series | HSE |
| Part Status | Active |
| Type | Board Level, Vertical |
| Package Cooled | TO-218, TO-220 |
| Attachment Method | PC Pin |
| Shape | Rectangular, Fins |
| Length | 1.000" (25.40mm) |
| Width | 0.650" (16.50mm) |
| Diameter | - |
| Height Off Base (Height of Fin) | 0.630" (16.00mm) |
| Power Dissipation @ Temperature Rise | 4.7W @ 75°C |
| Thermal Resistance @ Forced Air Flow | 4.93°C/W @ 200 LFM |
| Thermal Resistance @ Natural | 15.96°C/W |
| Material | Aluminum Alloy |
| Material Finish | Black Anodized |