RM 7 Core B65819 ■ In accordance with IEC 60431 ■ Core without center hole for transformer applications ■ RM cores are supplied in sets Magnetic characteristics (per set) Σl/A le Ae A min Ve with center hole without center hole 0,74 29,8 40 1 200 0,7 30,4 43 39 1 340 mm–1 mm mm2 mm2 mm3 7,2 g Approx. weight (per set) m 6,5 Gapped Material µe Ordering code 1) -A with center hole -N with threaded sleeve -J without center hole 0,30 0,18 89 139 B65819-J160-J41 B65819-J250-J41 0,16 0,12 147 186 B65819-+250-A48 B65819-+315-A48 AL value s nH approx. mm N41 160 ± 5 % 250 ± 5 % N48 250 ± 3 % 315 ± 3 % 1) Replace the + by the code letter “A” or “N” for the required version. 216 08/01 RM 7 Core B65819 Ungapped Material A L value µe nH A L1min P V Ordering code nH -J w/o center hole W/set N30 5000 + 30/– 20 % 2780 B65819-J-R30 T38 10000 +40/– 30 % 5570 B65819-J-Y38 N49 1900 + 30/– 20 % 1070 1070 < 0,22 (50 mT, 500 kHz, 100 °C) N87 2700 + 30/– 20 % 1510 1600 B65819-J-R87 < 0,77 (200 mT, 100 kHz, 100 °C) N97 1) 2700 + 30/– 20 % 1510 1600 B65819-J-R97 < 0,58 (200 mT, 100 kHz, 100 °C) 1) Preliminary data 217 08/01 B65819-J-R49 RM 7 Accessories B65820 Coil former Material: GFR thermosetting plastic; UL 94 V-0, insulation class to IEC 60085: B65820-B: F max. operating temperature 155 °C); color code green B65820-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 153 Squared pins For matching clamp and insulating washers see page 219 Sections AN mm2 lN mm A R value µΩ Pins Ordering code 1 21,4 35,6 56 8 B65820-B1008-D1 B65820-W1008-D1 4,8±0,5 1,3 _ 0,25 8,25 _ 0,1 0,45 0,45±0,05 0,75±0,05 1±0,1 ø8,3 _ 0,1 Hole arrangement Lochgruppen Viewinin Ansicht Montagerichtung mounting direction FRM0276-3 218 08/01 RM 7 Accessories B65820 Clamp ■ With ground terminal, made of stainless spring steel (tinned), 0,4 mm thick ■ Solderability to IEC 60068-2-20, test Ta, method 1 (aging 3): 235 °C, 2 s Insulating washer 1 between core and coil former ■ For tolerance compensation and for insulation ■ Made of polycarbonate (UL 94 V-0, insulation class to IEC 60085: E 120 °C), 0,08 mm thick Insulating washer 2 for double-clad PCBs ■ Made of polycarbonate (UL 94 V-0, insulation class to IEC 60085: E 120 °C), 0,3 mm thick Clamp (ordering code per piece, 2 are required) B65820-B2001 Ordering code Insulating washer 1 (reel packing, PU = 1 reel) B65820-A5000 Insulating washer 2 (bulk) B65820-C2005 Clamp Insulating washer 1 10,6+0,3 0,7±2 4,5±0,25 0,7±2 2,3±0,1 0,6x0,4 FRM0090-Q 219 08/01 Insulating washer 2 RM 7 B65659 Accessories B63339 Adjusting screw ■ Tube core with thread and core brake made of GFR polyterephthalate Plastic adjusting screwdriver (not shown) Plastic handle for adjusting screwdriver (not shown) Core RM 7 Adjusting screw Fig. Tube core ∅ × length mm Material Color code Min. adjusting range Ordering code Material AL value nH N48 250 a 2,60 × 3,7 N 22 red 12 B65659-F1-X23 315 b 2,75 × 4,4 N 22 black 16 B65659-F3-X23 % Adjusting screwdriver B63399-B4 Handle B63399-B5 Adjusting screws a b 220 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