Ferrites and accessories E 70/33/32 Core and accessories Series/Type: B66371, B66372 Date: June 2013 Data SheetData Sheet EPCOS AG 2013. Reproduction, publication and dissemination of this data sheet and the information contained therein without EPCOS prior express consent is prohibited.E 70/33/32 Core B66371 Delivery mode: single units Magnetic characteristics (per set) 1 l/A = 0.22 mm l = 149 mm e 2 A = 683 mm e 2 A = 676 mm min 3 V = 102000 mm e Approx. weight 514 g/set Ungapped Mate- A value B * P Ordering code L e S V rial nH mT W/set N27 8850 +30/20% 1530 320 < 19.00 (200 mT, 25 kHz, 100 C) B66371G0000X127 N87 9700 +30/20% 1700 320 < 9.50 (100 mT, 100 kHz, 100 C) B66371G0000X187 * H = 250 A/m f = 10 kHz T = 100 C Gapped Material g A value Ordering code L e approx. mm nH N27 1.500.05 655 113 B66371G1500X127 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 903 0.789 1568 0.847 1470 0.865 N87 903 0.789 1485 0.796 1438 0.873 Validity range: K1, K2: 0.20 mm < s < 5.00 mm K3, K4: 290 nH < A < 2880 nH L Please read Cautions and warnings and 2 06/13 Important notes at the end of this document.