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| PartNumber | B65857A0000R057 | B65857A0000R087 | B65857A0000R045 |
| Description | Ferrite Cores & Accessories EPX7/9-T57 '+30%-20% | Ferrite Cores & Accessories EPX7/9-N87 | Ferrite Cores & Accessories EPX7/9-N45 |
| Manufacturer | EPCOS / TDK | - | - |
| Product Category | Ferrite Cores & Accessories | - | - |
| RoHS | Y | - | - |
| Series | B65857A | - | - |
| Product | Ferrite Cores | - | - |
| Type | Ungapped | - | - |
| Core | EPX Core | - | - |
| Core Size | 7 x 9 | - | - |
| Inductance | 2.6 uH | - | - |
| Tolerance | - 20 %, + 30 % | - | - |
| Core Material | T57 | - | - |
| Packaging | Bulk | - | - |
| Brand | EPCOS / TDK | - | - |
| Product Type | Ferrite Cores & Accessories | - | - |
| Factory Pack Quantity | 1500 | - | - |
| Subcategory | Ferrites | - | - |
| Part # Aliases | 57 B65857A B65857AR57 R | - | - |