Ferrites and accessories RM 6, RM 6 LP Core and accessories Series/Type: B65807, B65808, B65821, B65659 Date: March 2023 TDK Electronics AG 2023. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without TDK Electronics’ prior express consent is prohibited.
RM 6 Core and accessories Individual parts Part no. Page Adjusting screw B65659 10 Core B65807 3 Clamps B65808 8 Coil former B65808 5, 6, 7 Core B65807 3 Insulating washer B65808 8 Coil former for SMPS transf.
RM 6 Core B65807 To IEC 63093-4 Core without center hole for transformer applications Delivery mode: sets Magnetic characteristics (per set) l/A le Ae Amin Ve with center hole without center hole 0.86 26.9 31.3 — 840 0.78 28.6 36.6 31 1050 mm–1 mm mm2 mm2 mm3 5.1 g Approx. weight (per set) m 4.9 Gapped (AL values/air gaps examples) Material AL value s nH approx. mm e Ordering code 1) -J without center hole -N with threaded sleeve -C with center hole 40 3% 0.80 27.
RM 6 Core B65807 Ungapped Material AL value e nH PV Ordering code -C with center hole -J without center hole W/set PC200 1100 +30/–20% 680 < 0.30 ( 50 mT, 1000 kHz, 100 °C) B65807J0000R608 < 0.40 ( 30 mT, 2000 kHz, 100 °C) N48 2200 +30/–20% 1500 B65807C0000R048 N45 3500 +30/–20% 2180 B65807J0000R045 N30 4300 +30/–20% 2670 B65807J0000R030 T35 6200 +30/–20% 3860 B65807J0000R035 T38 8600 +40/–30% 5350 B65807J0000Y038 N49 1700 +30/–20% 1060 < 0.
RM 6 Accessories B65808 Coil former, squared pins Material: GFR thermosetting plastic (UL 94 V-0, insulation class to IEC 60085: F max. operating temperature 155 C), color code black Sumikon PM 9630 ® E41429 (M), SUMITOMO BAKELITE CO LTD 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, 2.1 For matching clamp and insulating washers see page 8.
RM 6 Accessories B65808 Coil former for SMPS transformers with line isolation The creepage distances and clearances are designed such that the coil former is suitable for use in SMPS transformers with line isolation. Closed center flange with external wire guide Optimized for use with automatic winding machines Material: GFR thermosetting plastic (UL 94 V-0, insulation class to IEC 60085: F max.
RM 6 Accessories B65808 Coil former for power applications with angled pins Optimized for automatic winding Material: GFR polyterephthalate (UL 94 V-0, insulation class to IEC 60085: F max. operating temperature 155 C), color code black Valox 420-SE0 [E45329 (M)] SABIC INNOVATIVE PLASTICS B V 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, 2.
RM 6 Accessories B65808 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 for double-clad PCBs Made of polycarbonate (UL 94 V-0, insulation class to IEC 60085: E 120 C), 0.
RM 6 Accessories B65821, B65808 SMD coil former with gullwing terminals Material: GFR liquid crystal polymer (UL 94 V-0, insulation class to IEC 60085: F max. operating temperature 155 C), color code black Laperos E 130i E106764 (M), POLYPLASTICS CO LTD Vectra E 130i E83005 (M), CELANESE INTERNATIONAL CORP.
RM 6 Accessories B65659 Adjusting screw Tube core with thread and core brake made of GFR polyterephthalate Pocan B3235 ® E245249 (M), LANXESS AG Figure Tube core length (mm) Material Color code a 2.62 3.6 N22 red B65659F0001X023 b 2.75 4.4 N22 black B65659F0003X023 c 2.82 4.4 N22 yellow B65659F0004X023 a b Please read Cautions and warnings and Important notes at the end of this document.
RM 6 »Low Profile« Core B65807P To IEC 63093-4 For compact transformers Without center hole Delivery mode: sets Magnetic characteristics (per set) l/A le Ae Amin Ve = 0.58 mm–1 = 21.8 mm = 37.5 mm2 = 31.2 mm2 = 820 mm3 Approx. weight 4.0 g/set Ungapped Material AL value e nH PV Ordering code W/set T38 10500 +40/–30% 4860 B65807P0000Y038 N49 2200 +30/–20% 1020 < 0.14 ( 50 mT, 500 kHz, 100 C) B65807P0000R049 N92 2300 +30/–20% 1060 < 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 temperature changing or tensile load.
Ferrites and accessories Cautions and warnings Display of ordering codes for TDK Electronics products The ordering code for one and the same product can be represented differently in data sheets, data books, other publications, on the company website or in order-related documents such as shipping notes, order confirmations and product labels. The varying representations of the ordering codes are due to different processes employed and do not affect the specifications of the respective products.
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/i 2 I IDC Î J k k3 k3c L Cross section of coil Effective magnetic cross section Inductance factor; AL = L/N2 Minimum inductance at defined high saturation ( a) Minimum core cross section Winding cross section Resistance factor; AR = RCu /N2 RMS value of magnetic flux density Flux density deviation Peak value of magnet
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 tanL tanr tane tanh tan/i 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 power Relative core losses Performance factor Quality
Ferrites and accessories Symbols and terms Symbol Meaning Unit F e r B i s 0 a app e i p' p" r rev s' s" tot 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 Relative amplitude permeabili
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.
Important notes 7. Our manufacturing sites serving the automotive business apply the IATF 16949 standard. The IATF certifications confirm our compliance with requirements regarding the quality management system in the automotive industry. Referring to customer requirements and customer specific requirements (“CSR”) TDK always has and will continue to have the policy of respecting individual agreements.
