Ferrites and accessories E 36/18/11 Core and accessories Series/Type: B66389, B66390 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 36/18/11 Core B66389 Delivery mode: single units Magnetic characteristics (per set) 1 l/A = 0.68 mm l = 81 mm e 2 A = 120 mm e 2 A = 112 mm min 3 V = 9720 mm e Approx. weight 50 g/set Ungapped Material A value P Ordering code L e V nH W/set N27 2900 +30/20% 1550 < 1.85 (200 mT, 25 kHz, 100 C) B66389G0000X127 N87 3100 +30/20% 1680 < 5.00 (200 mT, 100 kHz, 100 C) B66389G0000X187 Gapped Material g A value Ordering code L e approx. mm nH N27 1.000.05 183 96 B66389G1000X127 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 182 0.749 302 0.847 280 0.865 N87 182 0.749 295 0.796 273 0.873 Validity range: K1, K2: 0.10 mm < s < 2.50 mm K3, K4: 100 nH < A < 930 nH L Please read Cautions and warnings and 2 06/13 Important notes at the end of this document.