Ferrites and accessories P 14 x 8 Core and accessories Series/Type: B65541, B65542, B65545, B65549 Date: May 2017  EPCOS AG 2017. 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.

P 14 × 8 Core and accessories Individual parts Part no. Page Adjusting screw B65549 6 Yoke B65545 5 Core B65541 3 Coil former B65542 4 Insulating washer Core B65541 3 Threaded sleeve (glued-in) Terminal carrier B65545 5 Example of an assembly set for printed circuit boards Please read Cautions and warnings and 2 5/17 Important notes at the end of this document.

P 14 × 8 Core B65541 ■ To IEC 62317-2 ■ Delivery mode: sets Magnetic characteristics (per set) with without center hole center hole Σl/A 0.8 0.73 mm–1 l 20 21 mm e A 25 28.7 mm2 e A 20 23.6 mm2 min V 500 603 mm3 e Approx. weight (per set) m 3.2 3.5 g Gapped (A values/air gaps examples) L Material A value s μ Ordering code 1) L e approx. -D with center hole nH mm -T with threaded sleeve M33 100 ±3% 0.30 64 B65541+0100A033 N48 160 ±3% 0.16 102 B65541+0160A048 250 ±3% 0.10 159 B65541+0250A048 315 ±3% 0.08 201 B65541+0315A048 400 ±3% 0.05 255 B65541+0400A048 Ungapped Material A value μ P Ordering code L e V -D with center hole nH W/set -W without center hole K1 140 +30/–20% 89 B65541D0000R001 M33 970 +30/–20% 618 B65541D0000R033 N48 2100 +30/–20% 1340 B65541D0000R048 N30 4600 +30/–20% 2680 B65541W0000R030 T38 9800 +40/–30% 5710 B65541W0000Y038 N87 2800 +30/–20% 1630 < 0.26 (200 mT, 100 kHz, 100 °C) B65541W0000R087 Other A values/air gaps and materials available on request – see Processing remarks on page 7. L 1) Replace the + by the code letter ”D“ or ”T“ for the required version. Please read Cautions and warnings and 3 5/17 Important notes at the end of this document.

P 14 × 8 Accessories B65542 Coil former Standard: to IEC 62317-2 Material: GFR polyterephthalate (UL 94 V-0, insulation class to IEC 60085: F max. operating temperature + 155 °C), color code black [ ] Crastin SK 645 FR E41938 (M) , E I DUPONT DE NEMOURS & CO INC Winding: see Processing notes, 2.1 Coil former Ordering code Sections A l A value N N R mm2 mm μΩ 1 8.4 28 115 B65542B0000T001 Coil former Please read Cautions and warnings and 4 5/17 Important notes at the end of this document.

P 14 × 8 Accessories B65545 Mounting assembly for printed circuit boards ■ The set comprises a terminal carrier and a yoke ■ For snap-in connection Terminal carrier Material: GFR polyterephthalate (UL 94 V-0, insulation class to IEC 60085: F max. operating temperature 155 °C), color code gray [ ] Pocan B4235® E245249 (M) , LANXESS AG 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 Yoke Spring yoke, made of tinned nickel silver (0.25 mm), with ground terminal Complete mounting assembly Complete mounting assembly (4 solder terminals) (6 solder terminals) Ordering code: B65545B0009X000 Ordering code: B65545B0010X000 4 solder terminals 6 solder terminals *) This recess must be on the side of the grounding pin to ensure that the yoke locks in position. a) Yoke b) Terminal carrier with 4 solder terminals c) Terminal carrier with 6 solder terminals Please read Cautions and warnings and 5 5/17 Important notes at the end of this document.

P 14 × 8 Accessories B65549 Adjusting screw ■ Tube core with thread and core brake made of GFR polyterephthalate [ ] Pocan B3235® E245249 (M) , LANXESS AG Tube core Ordering code ∅ × length (mm) Material Color code 2.76 × 2.9 N22 black B65549E0004X023 Please read Cautions and warnings and 6 5/17 Important notes at the end of this document.

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 tempera- ture changing or tensile load. Especially high cooling rates under ultrasonic cleaning and high static or cyclic loads can cause cracks or failure of the ferrite cores. For detailed information see data book, chapter “General - Definitions, 8.1”. Effects of core combination on A value L Stresses in the core affect not only the mechanical but also the magnetic properties. It is apparent that the initial permeability is dependent on the stress state of the core. The higher the stresses are in the core, the lower is the value for the initial permeability. Thus the embedding medium should have the greatest possible elasticity. For detailed information see data book, chapter “General - Definitions, 8.1”. Heating up Ferrites can run hot during operation at higher flux densities and higher frequencies. NiZn-materials The magnetic properties of NiZn-materials can change irreversible in high magnetic fields. Ferrite Accessories EPCOS ferrite accessories have been designed and evaluated only in combination with EPCOS ferrite cores. EPCOS explicitly points out that EPCOS ferrite accessories or EPCOS ferrite cores may not be compatible with those of other manufacturers. Any such combination requires prior te- sting by the customer and will be at the customer‘s own risk. EPCOS assumes no warranty or reliability for the combination of EPCOS ferrite accessories with cores and other accessories from any other manufacturer. Processing remarks The start of the winding process should be soft. Else the flanges may be destroyed. – Too strong winding forces may blast the flanges or squeeze the tube that the cores can not be mounted any more. – Too long soldering time at high temperature (>300 °C) may effect coplanarity or pin arrange- ment. – Not following the processing notes for soldering of the J-leg terminals may cause solderability problems at the transformer because of pollution with Sn oxyde of the tin bath or burned insula- tion of the wire. For detailed information see chapter “Processing notes”, section 2.2. – The dimensions of the hole arrangement have fixed values and should be understood as a recommendation for drilling the printed circuit board. For dimensioning the pins, the group of holes can only be seen under certain conditions, as they fit into the given hole arrangement. To avoid problems when mounting the transformer, the manufacturing tolerances for positioning the customers’ drilling process must be considered by increasing the hole diameter. Please read Cautions and warnings and 7 5/17 Important notes at the end of this document.

Ferrites and accessories Cautions and warnings Display of ordering codes for EPCOS products The ordering code for one and the same product can be represented differently in data sheets, data books, other publications and the website of EPCOS, 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. Detailed information can be found on the Internet under www.epcos.com/orderingcodes. Please read Cautions and warnings and 8 5/17 Important notes at the end of this document.

Ferrites and accessories Symbols and terms Symbols and terms Symbol Meaning Unit A Cross section of coil mm2 A Effective magnetic cross section mm2 e A Inductance factor; A = L/N2 nH L L A Minimum inductance at defined high saturation ( μ ) nH L1 a A Minimum core cross section mm2 min A Winding cross section mm2 N A Resistance factor; A = R /N2 μΩ = 10–6 Ω R R Cu B RMS value of magnetic flux density Vs/m2, mT Δ B Flux density deviation Vs/m2, mT Bˆ Peak value of magnetic flux density Vs/m2, mT Δ Bˆ Peak value of flux density deviation Vs/m2, mT B DC magnetic flux density Vs/m2, mT DC B Remanent flux density Vs/m2, mT R B Saturation magnetization Vs/m2, mT S C Winding capacitance F = As/V 0 CDF Core distortion factor mm–4.5 DF Relative disaccommodation coefficient DF = d/μ i d Disaccommodation coefficient E Activation energy J a f Frequency s–1, Hz f Cut-off frequency s–1, Hz cutoff f Upper frequency limit s–1, Hz max f Lower frequency limit s–1, Hz min f Resonance frequency s–1, Hz r f Copper filling factor Cu g Air gap mm H RMS value of magnetic field strength A/m Hˆ Peak value of magnetic field strength A/m H DC field strength A/m DC H Coercive field strength A/m c h Hysteresis coefficient of material 10–6 cm/A h/μ 2 Relative hysteresis coefficient 10–6 cm/A i I RMS value of current A I Direct current A DC ˆI Peak value of current A J Polarization Vs/m2 k Boltzmann constant J/K k Third harmonic distortion 3 k Circuit third harmonic distortion 3c L Inductance H = Vs/A Please read Cautions and warnings and 9 5/17 Important notes at the end of this document.

Ferrites and accessories Symbols and terms Symbol Meaning Unit Δ L/L Relative inductance change H L Inductance of coil without core H 0 L Main inductance H H L Parallel inductance H p L Reversible inductance H rev L Series inductance H s l Effective magnetic path length mm e l Average length of turn mm N N Number of turns P Copper (winding) losses W Cu P Transferrable power W trans P Relative core losses mW/g V PF Performance factor Q Quality factor (Q = ωL/R = 1/tan δ ) s L R Resistance Ω R Copper (winding) resistance (f = 0) Ω Cu R Hysteresis loss resistance of a core Ω h Δ R R change Ω h h R Internal resistance Ω i R Parallel loss resistance of a core Ω p R Series loss resistance of a core Ω s R Thermal resistance K/W th R Effective loss resistance of a core Ω V s Total air gap mm T Temperature °C Δ T Temperature difference K T Curie temperature °C C t Time s t Pulse duty factor v tan δ Loss factor tan δ Loss factor of coil L tan δ (Residual) loss factor at H → 0 r tan δ Relative loss factor e tan δ Hysteresis loss factor h tan δ/μ Relative loss factor of material at H → 0 i U RMS value of voltage V Û Peak value of voltage V V Effective magnetic volume mm3 e Z Complex impedance Ω ε Z Normalized impedance |Z| = |Z| /N2 × (l /A ) Ω /mm n n e e Please read Cautions and warnings and 10 5/17 Important notes at the end of this document.

Ferrites and accessories Symbols and terms Symbol Meaning Unit α Temperature coefficient (TK) 1/K α Relative temperature coefficient of material 1/K F α Temperature coefficient of effective permeability 1/K e ε Relative permittivity r Φ Magnetic flux Vs η Efficiency of a transformer η Hysteresis material constant mT-1 B η Hysteresis core constant A–1H–1/2 i λ Magnetostriction at saturation magnetization s μ Relative complex permeability μ Magnetic field constant Vs/Am 0 μ Relative amplitude permeability a μ Relative apparent permeability app μ Relative effective permeability e μ Relative initial permeability i μ ' Relative real (inductive) component of μ (for parallel components) p μ " Relative imaginary (loss) component of μ (for parallel components) p μ Relative permeability r μ Relative reversible permeability rev μ ' Relative real (inductive) component of μ (for series components) s μ " Relative imaginary (loss) component of μ (for series components) s μ Relative total permeability tot derived from the static magnetization curve ρ Resistivity Ω m–1 Σl/A Magnetic form factor mm–1 τ DC time constant τ = L/R = A /A s Cu Cu Cu L R ω Angular frequency; ω = 2 Πf s–1 All dimensions are given in mm. Surface-mount device Please read Cautions and warnings and 11 5/17 Important notes at the end of this document.

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. We nevertheless expressly point out that such statements cannot be regarded as binding statements about the suitability of our products for a particular customer application. As a rule we are either unfamiliar with individual customer applications or less familiar with them than the customers themselves. For these reasons, it is always ultimately incumbent on the customer to check and decide whether a product with the properties described in the product specification is suitable for use in a particular customer application. 2. We also point out that in individual cases, a malfunction of electronic components or failure before the end of their usual service life cannot be completely ruled out in the current state of the art, even if they are operated as specified. In customer applications requiring a very high level of operational safety and especially in customer applications in which the malfunction or failure of an electronic component could endanger human life or health (e.g. in accident prevention or life-saving systems), it must therefore be ensured by means of suitable design of the customer application or other action taken by the customer (e.g. installation of protective circuitry or redundancy) that no injury or damage is sustained by third parties in the event of malfunction or failure of an electronic component. 3. The warnings, cautions and product-specific notes must be observed. 4. In order to satisfy certain technical requirements, some of the products described in this publication may contain substances subject to restrictions in certain jurisdictions (e.g. because they are classed as hazardous). Useful information on this will be found in our Material Data Sheets on the Internet (www.tdk-electronics.tdk.com/material). Should you have any more detailed questions, please contact our sales offices. 5. We constantly strive to improve our products. Consequently, the products described in this publication may change from time to time. The same is true of the corresponding product specifications. Please check therefore to what extent product descriptions and specifications contained in this publication are still applicable before or when you place an order. We also reserve the right to discontinue production and delivery of products. Consequently, we cannot guarantee that all products named in this publication will always be available. The aforementioned does not apply in the case of individual agreements deviating from the foregoing for customer-specific products. 6. Unless otherwise agreed in individual contracts, all orders are subject to our General Terms and Conditions of Supply. 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. Even if IATF 16949 may appear to support the acceptance of unilateral requirements, we hereby like to emphasize that only requirements mutually agreed upon can and will be implemented in our Quality Management System. For clarification purposes we like to point out that obligations from IATF 16949 shall only become legally binding if individually agreed upon. 8. The trade names EPCOS, CeraCharge, CeraDiode, CeraLink, CeraPad, CeraPlas, CSMP, CTVS, DeltaCap, DigiSiMic, ExoCore, FilterCap, FormFit, LeaXield, MiniBlue, MiniCell, MKD, MKK, MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, PowerHap, PQSine, PQvar, SIFERRIT, SIFI, SIKOREL, SilverCap, SIMDAD, SiMic, SIMID, SineFormer, SIOV, ThermoFuse, WindCap are trademarks registered or pending in Europe and in other countries. Further information will be found on the Internet at www.tdk- electronics.tdk.com/trademarks. Release 2018-10 Please read Cautions and warnings and 12 5/17 Important notes at the end of this document.

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: E PCOS / TDK: B65541D0000R030 B65541D0000Y038 B65541D0100A041 B65541D0160A033 B65541T0040A033 B65549E4X23 B65541W0000R045 B65541D250A41 B65541T0160G048 B65541W0100A087 B65541W0160A087 B65541T0040A001 B65541D0000R087 B65541D0000R041 B65541D0100A087 B65541W0250A087 B65541D0250A087