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| Part Number | U126/91/20-3C94 | U126/91/20-3C90 | U126/91/20-3C97 |
| Manufacturer | Ferroxcube | Ferroxcube | Ferroxcube |
| Series | - | - | - |
| Packaging | Bulk | Bulk | Bulk |
| Product Status | Active | Active | Active |
| Core Type | U | U | - |
| Supplier Device Package | U 126 x 91 x 20 | U 126 x 91 x 20 | - |
| Material | 3C94 | 3C90 | - |
| Diameter | - | - | - |
| Inductance Factor (Al) | - | 3.3 µH | - |
| Tolerance | - | ±25% | - |
| Gap | - | Ungapped | - |
| Effective Permeability (µe) | - | 2050.0 | - |
| Initial Permeability (µi) | - | - | - |
| Core Factor (ΣI/A) mm⁻¹ | - | 0.857 | - |
| Effective Length (le) mm | - | 480.0 | - |
| Effective Area (Ae) mm² | - | 560.0 | - |
| Minimum Core Cross Section (Amin) mm² | - | 560.0 | - |
| Effective Magnetic Volume (Ve) mm³ | - | 268800.0 | - |
| Finish | Uncoated | Uncoated | - |
| Height | 3.583" (91.00mm) | 3.583" (91.00mm) | - |
| Length | 4.961" (126.00mm) | 4.961" (126.00mm) | - |
| Width | 0.787" (20.00mm) | 0.787" (20.00mm) | - |
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