E 25/13/7 (EF 25) Core B66317 ■ In accordance with IEC 61246 ■ E cores are supplied as single units Magnetic characteristics (per set) Σl/A le Ae A min Ve = 1,1 mm–1 = 57,5 mm = 52,5 mm2 = 51,5 mm2 = 3 020 mm3 Approx. weight 16 g/set Ungapped µe Material A L value nH A L1min P V nH W/set N30 2900 + 30/– 20 % 2530 N27 1750 + 30/– 20 % 1520 1440 < 0,59 B66317-G-X127 (200 mT, 25 kHz, 100 °C) N87 1850 + 30/– 20 % 1620 1440 < 1,60 B66317-G-X187 (200 mT, 100 kHz, 100 °C) Ordering code B66317-G-X130 Gapped µe mm A L value approx. nH Ordering code ** = 27 (N27) = 87 (N87) 0,10 ± 0,02 0,16 ± 0,02 0,25 ± 0,02 0,50 ± 0,05 1,00 ± 0,05 489 347 250 151 91 425 302 218 131 79 B66317-G100-X1** B66317-G160-X1** B66317-G250-X1** B66317-G500-X1** B66317-G1000-X1** Material g N27, N87 The A L value in the table applies to a core set comprising one ungapped core (dimension g = 0) and one gapped core (dimension g > 0). 410 08/01 E 25/13/7 (EF 25) Core B66317 Calculation factors (for formulas, see “E cores: general information”, page 382) Material Relationship between air gap – A L value Calculation of saturation current 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 < AL < 570 nH 411 08/01 E 25/13/7 (EF 25) Accessories B66208 Coil former (magnetic axis horizontal or vertical) Material: GFR polyterephthalate; UL 94 V-0, insulation class to IEC 60085: B66208-A, -J: F max. operating temperature 155 °C, color code black B66208-W: H max. operating temperature 180 °C, color code black Solderability: to IEC 60068-2-20, test Ta, method 1 (aging 3): 235 °C, 2 s Resistance to soldering heat: to IEC 60068-2-20, test Tb, method 1B: 350 °C, 3,5 s Winding: see “Processing Notes”, page 159 Squared pins Yoke Material: Stainless spring steel (0,25 mm) Coil former Figure Ordering code AR value µΩ lN mm Pins Sections AN mm2 1 1 61 50 28 10 B66208-A1110-T1 2 1 61 50 28 10 B66208-J1110-T1 B66208-W1010-T1 Yoke (ordering code per piece, 2 are required) B66208-A2010 Figure 1, horizontal version (type -A) 27,5 _ 0,3 7,7+0,2 2,2±0,1 3,5 _ 0,5 0,7±0,1 9,4 _ 0,25 17 _ 0,3 0,7±0,1 17,8 max. 17,3 _ 0,25 7,7+0,2 0,7 9,4 _ 0,25 ø1,6+0,1 28 _ 0,35 4 x 5,08 = 20,32 5 5,08 10 6. 1 Hole arrangement View in mounting direction 20,32 412 08/01 FEK0352-I E 25/13/7 (EF 25) Accessories B66208 Figure 2, vertical version (type -W and -J) 27,5 _ 0,3 17 3,6 _ 0,6 2,2 _ 0,15 26 max. 9,6 _ 0,2 17,3 _ 0,3 9,6 _ 0,2 0,85±0,1 0,85±0,1 17,3 _ 0,3 0,7 ø 1,6+0,1 5,08 5 7,7+0,2 10 6. 1 4 x 5,08 = 20,32 7,7+0,2 Hole arrangement View in mounting direction 12,7 _ 0,2 26,1+0,5 0,5 max. Yoke _ 0,2 3,5 +0,1 9,2 _ 0,1 7,6 _ 0,1 5,75±0,2 FEK0115-2 413 08/01 FEK0323-5 E 25/13/7 (EF 25) Accessories B66208 Coil former for SMPS transformers with line isolation Material: GFR polyterephthalate (UL 94 V-0, insulation class to IEC 60085: F max. operating temperature 155 °C), color code black Solderability: to IEC 60068-2-20, test Ta, method 1 (aging 3): 235 °C, 2 s Resistance to soldering heat: to IEC 60068-2-20, test Tb, method 1B: 350 °C, 3,5 s Winding: see “Processing Notes”, page 159 Squared pins Yoke Material: Nickel silver (0,3 mm) with ground terminal Coil former Ordering code Sections AN mm2 lN mm A R value µΩ Pins 1 56,9 69,2 41,8 9 B66208-K1009-T1 Yoke (ordering code per piece) B66208-A2003 Coil former Yoke 17,3 _ 0,2 10 _ 0,15 10 _ 0,15 0,65 _ 0,1 17,3 _ 0,2 7,7 3,5 _ 0,2 3,2 0,85 _ 0,1 25,7 _ 0,2 17,2 _ 0,25 7,7 0,45 12,7 20,32 15,1 24 _ 0,2 18,8 _ 0,4 ø1,3+0,15 6 12,7 2,54 9 5 Hole arrangement View in mounting direction 1 20,32 FEK0397-I 414 08/01 Herausgegeben von EPCOS AG Marketing Kommunikation, Postfach 80 17 09, 81617 München, DEUTSCHLAND EPCOS AG 2000. Alle Rechte vorbehalten. Vervielfältigung, Veröffentlichung, Verbreitung und Verwertung dieser Broschüre und ihres Inhalts ohne ausdrückliche Genehmigung der EPCOS AG nicht gestattet. Mit den Angaben in dieser Broschüre werden die Bauelemente spezifiziert, keine Eigenschaften zugesichert. Bestellungen unterliegen den vom ZVEI empfohlenen Allgemeinen Lieferbedingungen für Erzeugnisse und Leistungen der Elektroindustrie, soweit nichts anderes vereinbart wird. Diese Broschüre ersetzt die vorige Ausgabe. Fragen über Technik, Preise und Liefermöglichkeiten richten Sie bitte an den Ihnen nächstgelegenen Vertrieb der EPCOS AG oder an unsere Vertriebsgesellschaften im Ausland. Bauelemente können aufgrund technischer Erfordernisse Gefahrstoffe enthalten. Auskünfte darüber bitten wir unter Angabe des betreffenden Typs ebenfalls über die zuständige Vertriebsgesellschaft einzuholen. Published by EPCOS AG Marketing Communications, P.O. Box 80 17 09, 81617 Munich, GERMANY EPCOS AG 2000. All Rights Reserved. Reproduction, publication and dissemination of this brochure and the information contained therein without EPCOS’ prior express consent is prohibited. The information contained in this brochure describes the type of component and shall not be considered as guaranteed characteristics. Purchase orders are subject to the General Conditions for the Supply of Products and Services of the Electrical and Electronics Industry recommended by the ZVEI (German Electrical and Electronic Manufacturers’ Association), unless otherwise agreed. This brochure replaces the previous edition. For questions on technology, prices and delivery please contact the Sales Offices of EPCOS AG or the international Representatives. Due to technical requirements components may contain dangerous substances. For information on the type in question please also contact one of our Sales Offices. 1