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B66381

EPCOS

Core

www.DataSheet4U.com E 40/16/12 Core I Size based on US lam. size E cores B66381 US designation E 21 I E cores are supp...


EPCOS

B66381

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www.DataSheet4U.com E 40/16/12 Core I Size based on US lam. size E cores B66381 US designation E 21 I E cores are supplied as single units Magnetic characteristics (per set) Σl/A le Ae A min Ve = 0,52 mm–1 = 77 mm = 149 mm2 = 143 mm2 = 11 500 mm3 Approx. weight 58 g/set Ungapped Material N27 N72 A L value nH µe A L1min P V nH W/set Ordering code 3800 + 30/– 20 % 1560 3050 4600 + 30/– 20 % 1900 3150 < 2,15 B66381-G-X127 (200 mT, 25 kHz, 100 °C) < 1,12 B66381-G-X172 (200 mT, 25 kHz, 100 °C) Gapped Material N27 g mm 0,50 ± 0,05 A L value approx. nH 411 µe 166 Ordering code B66381-G500-X127 The A L 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) Material Relationship between air gap – A L value K1 (25 °C) N27 Validity range: 239 K2 (25 °C) – 0,782 Calculation of saturation current K3 (25 °C) 378 K4 (25 °C) – 0,847 K3 (100 °C) K4 (100 °C) 351 – 0,865 K1, K2 : 0,10 mm < s < 2,50 mm K3, K4 : 130 nH < A L < 1200 nH 425 08/01 Herausgegeben von EPCOS AG Marketing Kommunikation, Postfach 80 17 09, 81617 München, DEUTSCHLAND  EPCOS AG 2000. Alle Rechte vorbehalten. Vervielfältigung, Veröffentlichung, Verbreitung und Verwertung dieser Broschüre und ihres Inhalts ohne ausdrückliche Genehmigung der EPCOS AG nicht gestattet. Mit den Angaben in dieser Broschüre werden die Bauelemente spezifiziert, keine Eigenschaf...




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