EER Ferrite Cores
Round-centre-leg E cores for low leakage and high winding area.
SMPS transformersResonant converters
Dimensions (17 models)
mm · custom sizes on request
Typical shape — see table for sizes
| Model | A | B | C | D | E | F | D7 |
|---|---|---|---|---|---|---|---|
| EER7.5 | 7.50±0.15 | 4.00±0.1 | 2.50±0.1 | 1.75±0.07 | 6.22±0.13 | 2.60±0.1 | |
| EER9.5 | 9.35±0.15 | 4.90±0.1 | 2.45±0.05 | 1.68±0.08 | 7.50±0.25 | 3.40±0.1 | 7.20±0.1 |
| EER11-2.5-6 | 10.80±0.2 | 5.90±0.1 | 2.45±0.05 | 1.07±0.08 | 8.85±0.15 | 4.12±0.13 | 8.10±0.1 |
| EER14.5-3-7 | 14.50±0.2 | 6.70±0.1 | 2.95±0.05 | 1.65±0.1 | 11.80±0.2 | 4.70±0.1 | 11.80±0.2 |
| EER22 | 22.00±0.4 | 6.65±0.15 | 14.70±0.3 | 10.70±0.3 | 15.5 | 6.65±0.15 | |
| EER28 | 28.50±0.6 | 11.40±0.3 | 14.00±0.3 | 9.60±0.3 | 21.2 | 9.90±0.3 | |
| EER28L | 28.50±0.6 | 11.40±0.3 | 16.90±0.3 | 12.50±0.3 | 21.2 | 9.90±0.3 | |
| EER29 | 29.80±0.8 | 9.50±0.3 | 15.80±0.3 | 11.00±.0.3 | 22 | 9.50±0.3 | |
| EER2934 | 29.30±0.6 | 11.40±0.3 | 17.20±0.4 | 12.80±0.2 | 22.3 | 9.90±0.3 | |
| EER35 | 35.00±0.7 | 11.30±0.4 | 21.00±0.3 | 15.00±0.3 | 25.3 | 11.30±0.3 | |
| EER3530 | 35.00±0.65 | 11.40±0.35 | 15.00±0.2 | 10.20±0.35 | 26.15±0.55 | 11.30±0.25 | |
| EER39 | 39.10±0.9 | 12.50±0.4 | 22.20±0.3 | 17.00±0.4 | 29.3 | 12.50±0.3 | |
| EER40 | 40.00±0.8 | 13.30±0.3 | 22.40±0.3 | 15.40±0.3 | 29 | 13.30±0.3 | |
| EER4042 | 40.20±0.5 | 15.50±0.3 | 21.00±0.4 | 15.40±0.3 | 29.4 | 13.30±0.3 | |
| EER42 | 42.00±0.8 | 15.20±.25 | 22.00±0.3 | 15.40±0.3 | 30.5 | 15.20±0.3 | |
| EER49 | 49.00±0.8 | 17.00±0.5 | 26.20±0.4 | 18.75±0.25 | 36.5 | 17.00±0.5 | |
| EER53 | 53.20±0.8 | 21.50±0.3 | 24.20±0.3 | 16.00±0.3 | 38.7 | 20.00±0.3 |
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