EFD/EV/DE Cores Series/Type: EFD 15/8/5 The following products presented in this data sheet are being withdrawn. Ordering Code B66414B6008T002 Substitute Product Date of Withdrawal 2003-08-08 Deadline Last Orders 2004-02-29 Last Shipments 2004-08-31 For further information please contact your nearest EPCOS sales office, which will also support you in selecting a suitable substitute. The addresses of our worldwide sales network are presented at www.epcos.com/sales. EFD 15/8/5 Core B66413 ■ E core with flattened, lower center leg 15±0,4 5,5±0,2 0,2±0,1 4,65±0,15 = 2,27 mm–1 = 34 mm = 15 mm2 = 12,2 mm2 = 510 mm3 5,3±0,15 11±0,35 Approx. weight 2,8 g/set 2,4±0,1 Magnetic characteristics (per set) Σl/A le Ae A min Ve 7,5±0,15 g for especially flat transformer design ■ For DC/DC converters ■ EFD cores are supplied as single units FEK0417-2 Ungapped Material AL value nH µe N49 600 + 30/– 20 % 1080 330 < 0,11 B66413-G-X149 (50 mT, 500 kHz, 100 °C) N87 780 + 30/– 20 % 1400 560 < 0,28 B66413-G-X187 (200 mT, 100 kHz, 100 °C) Material AL value nH µe g approx. mm Ordering code N87 100 ± 10 % 160 ± 15 % 180 288 0,17 0,08 B66413-U100-K187 B66413-U160-L187 A L1min P V nH W/set Ordering code Gapped 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). Calculation factors (for formulas, see “E cores: general information”, page 382) Calculation of saturation current Material Relationship between air gap – A L value K1 (25 °C) K2 (25 °C) K3 (25 °C) K4 (25 °C) K3 (100 °C) K4 (100 °C) N87 29,7 – 0,676 44,2 – 0,796 33,2 Validity range: K1, K2: 0,10 mm < s < 1,00 mm K3, K4: 30 nH < A L < 280 nH 507 08/01 – 0,873 EFD 15/8/5 Accessories B66414 Coil former Material: GFR thermosetting plastic; UL 94 V-0, insulation class to IEC 60085: B66414-B: F max.operating temperature 155 °C; color code green B66414-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 157 Squared pins Yoke Material: Stainless spring steel (0,25 mm) Coil former Ordering code Sections AN mm2 lN mm AR value µΩ Pins 1 15,5 35,9 79,7 8 B66414-B1008-D1 B66414-W1008-D1 Yoke (ordering code per piece, 2 are required) B66414-B2000 Coil former Yoke 15±0,2 6,95 _ 0,1 8 1 5 13,75 ø1+0,1 13,6 min. Mounting holes 4 1 3 15,6 2 16,5±0,2 1 4,8 max. 4,4 FEK0271-J 7 8 6 1 5 3,75 4 11,25 Duroplast Marking of pin 1 3,5±0,2 10,4 _ 0,2 4 1,6 _ 0,15 2,55 8,85 min. 7,5 _ 0,2 1,7 8,3 max. 10,55 _ 0,15 5,55+0,15 0,45 CuSn6, tinned FEK0418-A 508 08/01 EFD 15/8/5 Accessories B66414 SMD coil former with J terminals Material: GFR liquid crystal polymer (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): 350 °C, 1 s Resistance to soldering heat: to IEC 60068-2-20, test Tb, method 1B: 350 °C, 3,5 s permissible soldering temperature for wire-wrap connection on coil former: 400 °C, 1 s Winding: see “Processing Notes”, page 160 Yoke Material: Mounting: Stainless spring steel (0,25 mm) Preferred assembly direction from the top Cover plate For marking and improved processing on assembly machines. See under coil former for material and resistance to soldering heat. Sections AN mm2 lN mm AR value µΩ Terminals Ordering code 1 18,1 35,1 66,7 8 B66414-B6008-T1 2 17,1 35,1 70,5 8 B66414-B6008-T2 Yoke (ordering code per piece, 2 are required) B66414-B2000 Cover plate B66414-A7000 Coil former Yoke 15 _ 0,25 10,4 _ 0,2 1 Cover plate Abdeckplatte 2,5 Center flange omitted for one-section version 1,8±0,1 6,6±0,1 3,75 11,25 1,2 5 11,25 6 4 3,75 7 3 0,55±0,05 8 0,5 max. Recommended Empfehlung für das Leiterplattenlayout PCB layout 2 13,6 min. 1 FEK0271-J 16 _ 0,2 1 15,6 7,3 _ 0,1 7,7±0,15 3,45 _ 0,2 20,8 _ 0,3 0,6±0,05 2,6+0,15 10,6 _ 0,2 5,5+0,2 0,5±0,05 0,5±0,05 6,4 _ 0,2 4,8 max. 4,4 12,8±0,1 17,7 FEK0187-Y FEK0329-J 509 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