Ferrites and accessories E 55/28/21 Core Series/Type: B66335 Date: June 2013 Data SheetData Sheet 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 55/28/21 Core B66335 To IEC 61246 Delivery mode: single units Magnetic characteristics (per set) 1 l/A = 0.35 mm l = 124 mm e 2 A = 354 mm e 2 A = 351 mm min 3 V = 43900 mm e Approx. weight 215 g/set Ungapped Mate- A value B * P Ordering code L e S V rial nH mT W/set N27 5800 +30/20% 1610 320 < 8.00 (200 mT, 25 kHz, 100 C) B66335G0000X127 N87 6400 +30/20% 1780 320 < 3.80 (100 mT, 100 kHz, 100 C) B66335G0000X187 N97 6700 +30/20% 1868 320 < 3.34 (100 mT, 100 kHz, 100 C) B66335G0000X197 * H = 250 A/m f = 10 kHz T = 100 C Gapped Material g A value Ordering code L e approx. ** = 27 (N27) mm nH ** = 87 (N87) N27, 0.500.05 843 234 B66335G0500X1** N87 1.000.05 496 138 B66335G1000X1** 1.500.05 364 101 B66335G1500X1** 2.000.05 292 81 B66335G2000X1** 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 496 0.764 836 0.847 781 0.865 N87 496 0.764 800 0.796 765 0.873 Validity range: K1, K2: 0.15 mm < s < 3.50 mm K3, K4: 180 nH < A < 1799 nH L Please read Cautions and warnings and 2 06/13 Important notes at the end of this document.