EI Ferrite Cores
EI cores with a wide centre leg for compact transformers.
SMPS transformersDC-DC converters
Dimensions (15 models)
mm · custom sizes on request
Typical shape — see table for sizes
| Model | A | B | C | D | E | F | D7 |
|---|---|---|---|---|---|---|---|
| EI12.5 | 12.40±0.3 | 7.40±0.15 | 4.85±0.2 | 5.10±0.1 | 8.8 | 2.40±0.1 | 1.50±0.1 |
| EI16 | 16.00±0.3 | 12.25±0.2 | 4.85±0.2 | 10.25±0.25 | 12.00±0.3 | 4.00±0.2 | 2.40±0.2 |
| EI19 | 20.00±0.4 | 13.55±0.3 | 5.00±0.2 | 11.30±0.15 | 14.3 | 4.55±0.2 | 2.30±0.2 |
| EI20 | 20.00±0.3 | 13.55±0.15 | 5.00±0.2 | 11.50±0.15 | 14.3 | 4.55±0.15 | 2.30±0.2 |
| EI22 | 22.00±0.5 | 15.00±0.25 | 5.75±0.25 | 11.00±0.25 | 15.95 | 5.75±.25 | 4.00±0.2 |
| EI25 | 25.40±0.5 | 17.00±0.25 | 6.35±0.25 | 13.83±0.3 | 18.64 | 6.35±0.15 | 3.18±0.2 |
| EI25.4 | 25.40±0.5 | 17.00±0.25 | 6.35±0.25 | 13.83±0.3 | 18.64 | 6.35±0.15 | 3.18±0.2 |
| EI28 | 28.00±0.55 | 17.30±0.25 | 10.75±0.2 | 12.80±0.2 | 18.6 | 7.25±0.25 | 3.50±0.2 |
| EI30 | 30.25±0.6 | 21.30±0.25 | 11.00-0.7 | 16.30±0.3 | 19.85 | 10.90-0.5 | 5.50±0.2 |
| EI33 | 33.00±0.65 | 23.75±0.25 | 12.70±0.3 | 19.25±0.25 | 23.6 | 9.70±0..3 | 5.00±0.2 |
| EI35 | 34.90±0.7 | 23.80±0.25 | 9.50±0.35 | 19.05±0.4 | 24.93 | 9.40±0.25 | 4.75±0.2 |
| EI40 | 40.20±0.7 | 27.25±0.25 | 11.85±0.35 | 20.25±0.25 | 28.5 | 11.85±0.35 | 7.50±0.3 |
| EI50 | 50.00±0.7 | 33.35±0.35 | 14.60±0.4 | 24.75±0.25 | 34 | 14.60±0.4 | 9.00±0.3 |
| EI60 | 60.00±0.8 | 35.85±0.35 | 15.60±0.4 | 27.85±0.35 | 44.5 | 15.60±0.4 | 8.50±0.3 |
| EI70 | 70.00±1.2 | 54.00±0.25 | 31.60±0.5 | 42.80±0.25 | 46.3 | 22.20±0.5 | 10.40±0.5 |
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