| PartNumber | B66421U0090A197 | B66421U0160K187 | B66421U0250K187 |
| Description | Ferrite Cores & Accessories EFD 25/13/9 N97 90 + 3%- 3% | Ferrite Cores & Accessories EFD25/13/9 N87AL 160NH +/-10% | FERRITE CORE, EFD, N87 |
| Manufacturer | EPCOS / TDK | EPCOS / TDK | - |
| Product Category | Ferrite Cores & Accessories | Ferrite Cores & Accessories | - |
| RoHS | Y | Y | - |
| Series | B66421U | B66421U | - |
| Product | Ferrite Cores | Ferrite Cores | - |
| Type | Gapped | Gapped | - |
| Core | EFD Core | EFD Core | - |
| Core Size | 25 x 13 x 9 | 25 x 13 x 9 | - |
| Inductance | 90 nH | 160 nH | - |
| Tolerance | 3 % | 10 % | - |
| Core Material | N97 | N87 | - |
| Packaging | Bulk | Bulk | - |
| Brand | EPCOS / TDK | EPCOS / TDK | - |
| Product Type | Ferrite Cores & Accessories | Ferrite Cores & Accessories | - |
| Factory Pack Quantity | 650 | 650 | - |
| Subcategory | Ferrites | Ferrites | - |
| Part # Aliases | B66421U90A197 | 160K187 B66421U B66421U160K187 | - |
| Impedance | - | - | - |
| Inside Diameter | - | - | - |
| Maximum DC Current | - | - | - |
| Maximum DC Resistance | - | - | - |
| Operating Temperature Range | - | - | - |
| Outside Diameter | - | - | - |
| Outside Height | - | 12.5 mm | - |
| Outside Width | - | 9.1 mm | - |
| Inside Height | - | - | - |
| Inside Length | - | - | - |
| Inside Width | - | - | - |
| Lead Diameter | - | - | - |
| Lead Spacing | - | - | - |
| Outside Length | - | 25 mm | - |
| Unit Weight | - | 0.282192 oz | - |