Ferrites and accessories E 20/10/6 (EF 20) Core and accessories Series/Type: B66311, B66206 Date: March 2015 a~~=pa~~=p EPCOS AG 2015. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without EPCOS prior express consent is prohibited. EPCOS AG is a TDK Group Company. E 20/10/6 (EF 20) Core B66311 To IEC 61246 Delivery mode: single units Magnetic characteristics (per set) 1 6 l/A = 1.44 mm l = 46.3 mm e 2 A = 32.1 mm e 2 A = 31.9 mm min 3 V = 1490 mm e Approx. weight 7.3 g/set Ungapped Material A value P P Ordering code L e V nH W/set N30 2150 +30/20% 2460 B66311G0000X130 N27 1300 +30/20% 1490 < 0.27 (200 mT, 25 kHz, 100 C) B66311G0000X127 N87 1470 +30/20% 1680 < 0.75 (200 mT, 100 kHz, 100 C) B66311G0000X187 Gapped Material g A value P Ordering code L e approx. ** = 27 (N27) mm nH ** = 87 (N87) N27, 0.09 0.01 363 415 B66311G0090X1** N87 0.17 0.02 227 259 B66311G0170X1** 0.25 0.02 171 195 B66311G0250X1** 0.50 0.05 103 118 B66311G0500X1** The A value in the table applies to a core set comprising one ungapped core (dimension g = 0) and L one gapped core (dimension g > 0). Calculation factors (for formulas, see E cores: general information) Material Relationship between Calculation of saturation current air gap A value L K1 (25 C) K2 (25 C) K3 (25 C) K4 (25 C) K3 (100 C) K4 (100 C) N27 61.6 0.737 88.1 0.847 80.9 0.865 N87 61.6 0.737 88.5 0.796 78.4 0.873 Validity range: K1, K2: 0.05 mm < s < 1.50 mm K3, K4: 50 nH < A < 430 nH L Please read Cautions and warnings and 2 03/15 Important notes at the end of this document. r r r r