data sheet data sheet date: june 2013 ferrites and accessories ep 5 ? core series/type: b65855a ? epcos ag 2015. reproduction, publicati on and dissemination of this publicatio n, enclosures hereto and the information contained therein without epcos' pr ior express consent is prohibited. epcos ag is a tdk group company.
2 06/13 please read cautions and warnings and ? important notes at the end of this document. for small interface transformers and filter chokes suitable for high precise feedthrough gapping same footprint as ee5 a l value increases about 40% against ee5 winding area larger than ee5 delivery mode: sets magnetic characteristics (per set) ? l / a = 3.149 mm ?1 ? l e = 9.73 mm ? a e = 3.09 mm 2 ? a min = 2.30 mm 2 ? v e = 30 mm 3 approx. weight 0.5 g/set gapped ungapped material a l value ? ? nh ? e s ? approx. ? mm ordering code t38 16 ? 3% 40 0.24 b65855a0016a038 25 ? 3% 63 0.15 b65855a0025a038 40 ? 5% 100 0.10 b65855a0040j038 63 ? 8% 158 0.06 B65855A0063D038 material a l value ? nh ? e ordering code n87 430 +30/?20% 1100 b65855a0000r087 n45 550 +30/?20% 1380 b65855a0000r045 t57 560 +30/?20% 1400 b65855a0000r057 t38 2000 +40/?30% 5000 b65855a0000y038 t66 2200 +40/?30% 5500 b65855a0000y066 b65855a ep 5 through ep 20 core ep 5
3 06/13 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. 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 chapter ?definitions? , section 8.1. effects of core combination on a l value stresses in the core affect not only the mechanical but also the magnetic properties. it is apparent that the initial permeability is depe ndent on the stress state of the core. the higher the stresses are in the core, the lower is the value for the init ial permeability. thus the embedding medium should have the greatest possible elasticity. for detailed information see chapter ?definitions? , section 8.2. heating up ferrites can run hot during operation at higher flux densities and higher frequencies. nizn-materials the magnetic properties of nizn-materials can c hange irreversible in high magnetic fields. processing notes ? the start of the winding process should be soft. else the flanges may be destroid. ? to strong winding forces may blast the flanges or squeeze the tube that the cores can no more be mount. ? to long soldering time at high temperature (>300 c) may effect coplanarity or pin arrangement. ? not following the processing notes for solderin g of the j-leg terminals may cause solderability problems at the transformer because of pollution wi th sn oxyd of the tin bath or burned insulation of the wire. for detailed information see chapter ?processing notes? , section 8.2. ? the dimensions of the hole arrangement have fixed values and should be understood as ? a recommendation for drilling the printed circuit board. for di mensioning 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 c onsidered by increasing the hole diameter. cautions and warnings ferrites and accessories cautions and warnings
4 06/13 symbol meaning unit a ? a e ? a l ? a l1 ? a min ? a n ? a r ? b ? ? b ? b ? ? ? b ? ? b dc ? b r ? b s ? c 0 ? cdf ? df ? d ? e a ? f ? f cutoff ? f max ? f min ? f r ? f cu ? g ? h ? h ? ? h dc ? h c ? h ? h/ ? i 2 ? i ? i dc ? i ? ? j ? k ? k 3 ? k 3c ? l cross section of coil ? effective magnetic cross section ? inductance factor; a l = l/n 2 ? minimum inductance at defined high saturation ( ? a ) ? minimum core cross section ? winding cross section ? resistance factor; a r = r cu /n 2 ? rms value of magnetic flux density ? flux density deviation ? peak value of magnetic flux density ? peak value of flux density deviation ? dc magnetic flux density ? remanent flux density ? saturation magnetization ? winding capacitance ? core distortion factor ? relative disaccommodation coefficient df = d/ ? i ? disaccommodation coefficient ? activation energy ? frequency ? cut-off frequency ? upper frequency limit ? lower frequency limit ? resonance frequency ? copper filling factor ? air gap ? rms value of magnetic field strength ? peak value of magnetic field strength ? dc field strength ? coercive field strength ? hysteresis coefficient of material ? relative hysteresis coefficient ? rms value of current ? direct current ? peak value of current ? polarization ? boltzmann constant ? third harmonic distortion ? circuit third harmonic distortion ? inductance mm 2 ? mm 2 ? nh ? nh ? mm 2 ? mm 2 ? ?? = 10 ?6 ?? ? vs/m 2 , mt ? vs/m 2 , mt ? vs/m 2 , mt ? vs/m 2 , mt ? vs/m 2 , mt ? vs/m 2 , mt ? vs/m 2 , mt ? f = as/v ? mm ?4.5 ? ? ? j ? s ?1 , hz ? s ?1 , hz ? s ?1 , hz ? s ?1 , hz ? s ?1 , hz ? ? mm ? a/m ? a/m ? a/m ? a/m ? 10 ?6 cm/a ? 10 ?6 cm/a ? a ? a ? a ? vs/m 2 ? j/k ? ? ? h = vs/a symbols and terms ferrites and accessories symbols and terms
5 06/13 symbol meaning unit ? l/l ? l 0 ? l h ? l p ? l rev ? l s ? l e ? l n ? n ? p cu ? p trans ? p v ? pf ? q ? r ? r cu ? r h ? ? r h ? r i ? r p ? r s ? r th ? r v ? s ? t ? ? t ? t c ? t ? t v ? tan ?? ? tan ?? l ? tan ?? r ? tan ?? e ? tan ?? h ? tan ?? / ? i ? u ? ? ? v e ? z ? z n 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 factor (q = ? l/r s = 1/tan ?? l ) ? resistance ? copper (winding) resistance (f = 0) ? hysteresis loss resistance of a core ? r h change ? internal resistance ? parallel loss resi stance of a core ? series loss resistance of a core ? thermal resistance ? effective loss resistance of a core ? total air gap ? temperature ? temperature difference ? curie temperature ? time ? pulse duty factor ? loss factor ? loss factor of coil ? (residual) loss factor at h ? 0 ? relative loss factor ? hysteresis loss factor ? relative loss factor of material at h ? 0 ? rms value of voltage ? peak value of voltage ? effective magnetic volume ? complex impedance ? normalized impedance |z| n = |z| /n 2 ? ? (l e /a e ) h ? h ? h ? h ? h ? h ? mm ? mm ? ? w ? w ? mw/g ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? k/w ? ? ? mm ? c ? k ? c ? s ? ? ? ? ? ? ? ? v ? v ? mm 3 ? ? ? ? /mm symbols and terms ferrites and accessories
6 06/13 all dimensions are given in mm. surface-mount device symbol meaning unit ? ? ? f ? ? e ? ? r ? ? ? ? ? ? b ? ? i ? ? s ? ? ? ? 0 ? ? a ? ? app ? ? e ? ? i ? ? p ' ? ? p " ? ? r ? ? rev ? ? s ' ? ? s " ? ? tot ? ? ? ? ? l/a ? ? cu ? ? 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 permeability ? relative apparent permeability ? relative effective permeability ? relative initial permeability ? relative real (inductive) component of ? (for parallel components) ? relative imaginary (loss) component of ? (for parallel components) ? relative permeability ? relative reversible permeability ? relative real (inductive) component of ? (for series components) ? relative imaginary (loss) component of ? (for series components) ? relative total permeability ? derived from the static magnetization curve ? resistivity ? magnetic form factor ? dc time constant ? cu = l/r cu = a l /a r ? angular frequency; ?? = 2 ? f 1/k ? 1/k ? 1/k ? ? vs ? ? mt -1 ? a ?1 h ?1/2 ? ? ? vs/am ? ? ? ? ? ? ? ? ? ? ? ? ? ? m ?1 ? mm ?1 ? s ? s ?1 symbols and terms ferrites and accessories
7 06/13 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 re- quirements 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 prod ucts for a particular customer application . as a rule, epcos is either unfamiliar with indi vidual customer applicat ions or less familiar with them than the customers themselves. for these reasons, it is always ultimately incum- bent on the customer to check and decide whether an epcos product with the properties de- scribed 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 safe ty and especially in customer applications in which the malfunction or failure of an elec tronic component could endanger human life or health (e.g. in accident prevention or lifesav ing systems), it must therefore be ensured by means of suitable design of the customer applic ation or other action taken by the customer (e.g. installation of protective circuitry or r edundancy) 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 re strictions in certain jurisdictions (e.g. because they are classed as hazardous) . useful information on th is will be found in our ma- terial data sheets on the internet (www.epc os.com/material). should you have any more de- tailed questions, please contact our sales offices. 5. we constantly strive to im prove 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 pro ducts named in this publication will always be available. the aforementioned does not apply in the case of individual agreements deviating from the fore- going for customer-specific products. 6. unless otherwise agreed in individual contracts, all orders are subject to the current version of the "general terms of delivery for produc ts and services in the electrical industry" published by the german electrical and electronics industry association (zvei) . 7. the trade names epcos, baoke, alu-x, ceradiode, ceralink, csmp, cssp, ctvs, deltacap, digisimic, dssp, filtercap, form fit, miniblue, minicell, mkd, mkk, mlsc, motorcap, pcc, phasecap, phasecube, phas emod, phicap, siferrit, sifi, sikorel, silvercap, simdad, simic, simid, sinefor mer, siov, sip5d, sip5k, thermofuse, windcap are trademarks registered or pending in europe and in other countries. further information will be found on the in ternet at www.epcos.com/trademarks. important notes
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