This datasheet provides dimensions, electrical specifications, and part numbers for low-profile EFD series power transformer cores.
The document details the EFD (Economical Flat Design) series of cores designed for low profile power transformer applications. These components offer a combination of very low height and excellent throughput power, making them ideal for space-constrained designs.
Specific data is provided for three core sizes: 15, 20, and 25. The text includes physical dimensions (A through H), electrical parameters such as effective length, area, and volume, and a table of material grades with their corresponding AL values, tolerances, gap lengths, and effective permeability.
| Effective Area (15mm core) | 15.00mm² |
|---|---|
| Minimum Area (15mm core) | 12.20mm² |
| Effective Volume (15mm core) | 510.00mm³ |
| Effective Area (20mm core) | 31.00mm² |
| Minimum Area (20mm core) | 29.00mm² |
| Effective Volume (20mm core) | 1460.00mm³ |
| Effective Area (25mm core) | 58.00mm² |
| Minimum Area (25mm core) | 57.00mm² |
| Effective Volume (25mm core) | 3300.00mm³ |
No, it is obtained when tested with an ungapped half core of the same grade.
They are in accordance with IEC Document 60205.