Ferrites and accessories RM 4, RM 4 LP Core and accessories Series/Type: B65803, B65804, B65806, B65539 Date: February 2016 a~í~=pÜÉÉí ¤ 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.
RM 4 Core and accessories Individual parts Part no. Page Adjusting screw B65539 B65806 7 Core B65803 3 Clamp B65806 6 Coil former B65804 5 Core B65803 3 B65804 6 Core B65803 8 Coil former B65804 9 SMD coil former with J terminals B65804 10 Clamp B65804 11 Insulatimg washer B65804 11 Threaded sleeve (glued-in) Insulating washer Example of an assembly set Also available: Please read Cautions and warnings and Important notes at the end of this document.
RM 4 Core B65803 ■ To IEC 62317-4 ■ Core without center hole for transformer applications ■ Delivery mode: sets Magnetic characteristics (per set) 6 l/A le Ae Amin Ve with center hole without center hole 1.9 21 11 231 1.7 22 13 11.3 286 mm–1 mm mm2 mm2 mm3 1.65 g Approx. weight (per set) m 1.45 Gapped Material AL value nH Pe s approx. mm Ordering code 1) -A with center hole -N with threaded sleeve K1 16 r3% 25 r3% 1.0 0.40 24.2 37.
RM 4 Core B65803 Ungapped Material AL value nH Pe N45 1700 +30/–20% 2290 B65803J0000R045 N30 1900 +30/–20% 2560 B65803J0000R030 T35 2800 +40/–30% 3770 B65803J0000Y035 T38 3700 +40/–30% 4980 B65803J0000Y038 N49 750 +30/–20% 1010 < 0.04 ( 50 mT, 500 kHz, 100 qC) B65803J0000R049 N87 1100 +30/–20% 1480 < 0.20 (200 mT, 100 kHz, 100 qC) B65803J0000R087 N97 1100 +30/–20% 1480 < 0.
RM 4 Accessories B65804 Coil former Material: GFR thermosetting plastic (UL 94 V-0, insulation class to IEC 60085: H max. operating temperature 155 qC), color code black Sumikon PM 9630® >E41429 (M)@, SUMIMOTO BAKELITE CO LTD Solderability: to IEC 60068-2-20, test Ta, method 1 (aging 3): 235 qC, 2 s Resistance to soldering heat: to IEC 60068-2-20, test Tb, method 1B: 350 qC, 3.5 s Winding: see Data Book 2013, chapter “Processing notes, 2.1” For matching clamp and insulating washers see page 6.
RM 4 Accessories B65804, B65806 Clamp ■ With ground terminal, made of stainless spring steel (tinned), 0.3 mm thick ■ Solderability to IEC 60068-2-20, test Ta, method 1 (aging 3): 235 qC, 2 s ■ Also available as strip clamp on reels on request Insulating washer for double-clad PCBs 120 qC), 0.
RM 4 Accessories B65539, B65806 Adjusting screw ■ Tube core with thread and core brake made of GFR polyterephthalate Pocan B3235 ® >E245249 (M)@, LANXESS AG Figure Tube core u length (mm) Material Color code a 1.81 u 2.0 K1 yellow B65539C1003X001 a 1.81 u 2.7 N22 red B65539C1002X022 b 1.81 u 3.4 N22 green B65806C3001X022 a Please read Cautions and warnings and Important notes at the end of this document.
RM 4 »Low Profile« Core ■ ■ ■ ■ B65803 To IEC 62317-4 For compact transformers with high inductance Without center hole Delivery mode: sets Magnetic characteristics (per set) 6l/A le Ae Amin Ve = 1.2 mm–1 = 17.3 mm = 14.5 mm2 = 11.3 mm2 = 251 mm3 Approx. weight 1.2 g/set Ungapped AL value nH Pe T38 5000 +40/–30% 4750 N49 950 +30/–20% 900 < 0.04 ( 50 mT, 500 kHz, 100 qC) B65803P0000R049 N92 1000 +30/–20% 950 < 0.
RM 4 »Low Profile« B65804 Accessories Coil former Material: GFR thermosetting plastic (UL 94 V-0, insulation class to IEC 60085: F max.
RM 4 »Low Profile« Accessories B65804 SMD coil former with J terminals Material: GFR liquid crystal polymer (UL 94 V-0, insulation class to IEC 60085: F max.
RM 4 »Low Profile« Accessories for PTH applications B65804 Clamp ■ With ground terminal, made of stainless spring steel (tinned), 0.3 mm thick, Without ground terminal, made of stainless spring steel, 0.3 mm thick ■ Solderability to IEC 60068-2-20, test Ta, method 1 (aging 3): 235 qC, 2 s ■ Also available as strip clamp on reels on request Insulating washer for double-clad PCBs 120 qC), 0.
Ferrites and accessories Cautions and warnings Cautions and warnings Mechanical stress and mounting Ferrite cores have to meet mechanical requirements during assembling and for a growing number of applications. Since ferrites are ceramic materials one has to be aware of the special behavior under mechanical load. As valid for any ceramic material, ferrite cores are brittle and sensitive to any shock, fast changing or tensile load.
Ferrites and accessories Symbols and terms Symbols and terms Symbol Meaning Unit A Ae AL AL1 Amin AN AR B 'B B̂ 'B̂ BDC BR BS C0 CDF DF d Ea f fcutoff fmax fmin fr fCu g H Ĥ HDC Hc h h/Pi 2 I IDC Î Cross section of coil Effective magnetic cross section Inductance factor; AL = L/N2 Minimum inductance at defined high saturation ( Pa) Minimum core cross section Winding cross section Resistance factor; AR = RCu /N2 RMS value of magnetic flux density Flux dens
Ferrites and accessories Symbols and terms Symbol Meaning Unit 'L/L L0 LH Lp Lrev Ls le lN N PCu Ptrans PV PF Q R RCu Rh 'Rh Ri Rp Rs Rth RV s T 'T TC t tv tan G tan GL tan Gr tan Ge tan Gh tan G/Pi U Û Ve Z Zn Relative inductance change Inductance of coil without core Main inductance Parallel inductance Reversible inductance Series inductance Effective magnetic path length Average length of turn Number of turns Copper (winding) losses Transferrable powe
Ferrites and accessories Symbols and terms Symbol Meaning Unit D DF De Hr ) K KB Ki Os P P0 Pa Papp Pe Pi Pp' Pp" Pr Prev Ps' Ps" Ptot Temperature coefficient (TK) Relative temperature coefficient of material Temperature coefficient of effective permeability Relative permittivity Magnetic flux Efficiency of a transformer Hysteresis material constant Hysteresis core constant Magnetostriction at saturation magnetization Relative complex permeability Magnetic field constant
Important notes The following applies to all products named in this publication: 1. Some parts of this publication contain statements about the suitability of our products for certain areas of application. These statements are based on our knowledge of typical requirements that are often placed on our products in the areas of application concerned.
