Ferrites and accessories E 55/28/21 Core Series/Type: B66335 Date: September 2006 Data SheetData Sheet EPCOS AG 2006. Reproduction, publication and dissemination of this data sheet and the information contained therein without EPCOS prior express consent is prohibited.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 Material A value P Ordering code L e V nH W/set N27 5800 +30/20% 1610 < 8.00 (200 mT, 25 kHz, 100 C) B66335G0000X127 N87 6400 +30/20% 1780 < 3.80 (100 mT, 100 kHz, 100 C) B66335G0000X187 Gapped Material g A value Ordering code L e approx. ** = 27 (N27) mm nH ** = 87 (N87) N27, 0.50 0.05 843 234 B66335G0500X1** N87 1.00 0.05 496 138 B66335G1000X1** 1.50 0.05 364 101 B66335G1500X1** 2.00 0.05 292 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 09/06 Important notes at the end of this document.