Ferrites and accessories E 25/13/7 (EF 25) Core and accessories Series/Type: B66317, B66208 Date: June 2016 a~~=pa~~=p EPCOS AG 2016. 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 25/13/7 (EF 25) Core B66317 To IEC 61246 Delivery mode: single units Magnetic characteristics (per set) 1 6 l/A = 1.1 mm l = 57.5 mm e 2 A = 52.5 mm e 2 A = 51.5 mm min 3 V = 3020 mm e Approx. weight 16 g/set Ungapped Material A value P P Ordering code L e V nH W/set N30 2900 +30/20% 2530 B66317G0000X130 N27 1750 +30/20% 1520 < 0.59 (200 mT, 25 kHz, 100 C) B66317G0000X127 N87 1850 +30/20% 1620 < 1.60 (200 mT, 100 kHz, 100 C) B66317G0000X187 Gapped Material g A value P Ordering code L e approx. ** = 27 (N27) mm nH ** = 87 (N87) N27, 0.10 0.02 489 425 B66317G0100X1** N87 0.16 0.02 347 302 B66317G0160X1** 0.25 0.02 250 218 B66317G0250X1** 0.50 0.05 151 131 B66317G0500X1** 1.00 0.05 91 79 B66317G1000X1** 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 90 0.731 139 0.847 129 0.865 N87 90 0.731 139 0.796 125 0.873 Validity range: K1, K2: 0.10 mm < s < 2.00 mm K3, K4: 60 nH < A < 570 nH L Please read Cautions and warnings and 2 06/16 Important notes at the end of this document. r r r r r
