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B66381 Datasheet(PDF) 2 Page - TDK Electronics |
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B66381 Datasheet(HTML) 2 Page - TDK Electronics |
2 / 7 page 2 06/13 Please read Cautions and warnings and Important notes at the end of this document. ■ Size based on US lam. size E cores US designation E 21 ■ Delivery mode: single units Magnetic characteristics (per set) l/A = 0.52 mm–1 le = 77 mm Ae = 149 mm2 Amin = 143 mm2 Ve = 11500 mm3 Approx. weight 58 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” ) Validity range: K1, K2: 0.10 mm < s < 2.50 mm K3, K4: 130 nH < AL < 1200 nH Material AL value nH e PV W/set Ordering code N27 3800 +30/–20% 1560 < 2.15 (200 mT, 25 kHz, 100 °C) B66381G0000X127 N87 4150 +30/–20% 1710 < 5.80 (200 mT, 100 kHz, 100 °C) B66381G0000X187 N72 4600 +30/–20% 1900 < 1.12 (200 mT, 25 kHz, 100 °C) B66381G0000X172 Material g mm AL value approx. nH e Ordering code N27 0.50 0.05 411 166 B66381G0500X127 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) N27 239 –0.782 378 –0.847 351 –0.865 B66381 Core E 40/16/12 |
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