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B66418-B2000 Datasheet(PDF) 1 Page - EPCOS |
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B66418-B2000 Datasheet(HTML) 1 Page - EPCOS |
1 / 3 page 510 08/01 I E core with flattened, lower center leg for especially flat transformer design I For DC/DC converters I EFD cores are supplied as single units Magnetic characteristics (per set) Σl/A = 1,52 mm–1 le = 47 mm Ae = 31 mm2 Amin = 31 mm2 Ve = 1 460 mm3 Approx. weight 7,2 g/set Ungapped Gapped The AL value in the table applies to a core set comprising one ungapped core (dimension g = 0) and one gapped core (dimension g > 0). Calculation factors (for formulas, see “E cores: general information”, page 382) Validity range: K1, K2: 0,10 mm < s < 1,40 mm K3, K4: 50 nH < AL < 410 nH Material AL value nH µe AL1min nH PV W/set Ordering code N49 910 + 30/– 20 % 1100 750 < 0,29 (50 mT, 500 kHz, 100 °C) B66417-G-X149 N87 1200 + 30/– 20 % 1440 660 < 1,05 (200 mT, 100 kHz, 100 °C) B66417-G-X187 Material AL value nH µe g approx. mm Ordering code N87 100 ± 10 % 120 0,49 B66417-U100-K187 160 ± 10 % 193 0,25 B66417-U160-K187 Material Relationship between air gap – AL value Calculation of saturation current K1 (25 °C) K2 (25 °C) K3 (25 °C) K4 (25 °C) K3 (100 °C) K4 (100 °C) N87 61,1 – 0,699 85,4 – 0,796 75,7 – 0,873 B66417 Core EFD 20/10/7 |
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