IEC TR 63090 Edition 1 0 201 7 05 TECHNICAL REPORT Dimensional tolerances of ferrite cores IE C T R 6 3 0 9 0 2 0 1 7 0 5 (e n ) ® colour inside TH IS PUBLICATION IS COPYRIGHT PROTECTED Copyright © 20[.]
I E C TR 63 ® Edition 201 7-05 TE C H N I C AL RE P ORT colour i n sid e IEC TR 63090:201 7-05(en) D i m e n s i on al tol eran ces of ferri te cores T H I S P U B L I C AT I O N I S C O P YRI G H T P RO T E C T E D C o p yri g h t © I E C , G e n e v a , S wi tz e rl a n d All rights reserved Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or IEC's member National Committee in the country of the requester If you have any questions about I EC copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local I EC member National Committee for further information IEC Central Office 3, rue de Varembé CH-1 21 Geneva 20 Switzerland Tel.: +41 22 91 02 1 Fax: +41 22 91 03 00 info@iec.ch www.iec.ch Ab ou t th e I E C The I nternational Electrotechnical Commission (I EC) is the leading global organization that prepares and publishes I nternational Standards for all electrical, electronic and related technologies Ab o u t I E C p u b l i ca ti o n s The technical content of IEC publications is kept under constant review by the IEC Please make sure that you have the latest edition, a corrigenda or an amendment might have been published I E C Catal og u e - webstore i ec ch /catal og u e The stand-alone application for consulting the entire bibliographical information on IEC International Standards, Technical Specifications, Technical Reports and other documents Available for PC, Mac OS, Android Tablets and iPad I E C pu bl i cati on s s earch - www i ec ch /search pu b The advanced search enables to find IEC publications by a variety of criteria (reference number, text, technical committee,…) It also gives information on projects, replaced and withdrawn publications E l ectroped i a - www el ectroped i a org The world's leading online dictionary of electronic and electrical terms containing 20 000 terms and definitions in English and French, with equivalent terms in additional languages Also known as the International Electrotechnical Vocabulary (IEV) online I E C G l os sary - s td i ec ch /g l oss ary 65 000 electrotechnical terminology entries in English and French extracted from the Terms and Definitions clause of IEC publications issued since 2002 Some entries have been collected from earlier publications of IEC TC 37, 77, 86 and CISPR I E C J u st Pu bl i s h ed - webstore i ec ch /j u stpu bl i sh ed Stay up to date on all new IEC publications Just Published details all new publications released Available online and also once a month by email I E C C u stom er S ervi ce C en tre - webstore i ec ch /csc If you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: csc@iec.ch I E C TR 63 ® Edition 201 7-05 TE C H N I C AL RE P ORT colour i n sid e D i m e n s i on al tol eran ce s of fe rri te cores INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 29.1 00.1 ISBN 978-2-8322-4349-7 Warn i n g ! M ake s u re th a t you ob tai n ed th i s p u b l i cati on from an au th ori zed d i stri b u tor ® Registered trademark of the International Electrotechnical Commission －2－ I EC TR 63090:201 © I EC 201 CONTENTS FOREWORD I NTRODUCTI ON Scope Norm ative references Terms and definitions Summ ary of dim ensional tolerances of ferrite cores General Dim ensional tolerances of E-cores Dim ensional tolerances of ring cores 4 Dim ensional tolerances of ETD/EER-cores 1 Dim ensional tolerances of planar ER-cores Conclusion Annex A (informative) Data of dimensional tolerances A E-core A Ring core 34 A ETD/EER-core 43 A Planar ER-core 49 Bibliograph y 55 Figure Figure Figure Figure Figure Figure Figure Figure Figure Table Table Table Table Table Table Table Table Table – Cause-and-effect diagram of variations in dimension – E-core – Dimensional tolerances of each part of E-cores – Ring core – Dimensional tolerances of each part of ring cores 1 – ETD/EER-core 1 – Dimensional tolerances of each part of ETD/EER-cores – Planar ER-core – Dimensional tolerances of each part of planar ER-cores – I EC standards of ferrite core dimensions – Dimensional tolerances recomm ended for a new design of E-cores – Dimensional tolerances recomm ended for a new design of ring cores – Dimensional tolerances recomm ended for a new design of ETD/EER-cores – Dimensional tolerances recomm ended for a new design of planar ER-cores A – Dim ensional tolerances of each part (E-core) A – Dim ensional tolerances of each part (Ring-core) 34 A – Dim ensional tolerances of each part (ETD/EER-core) 43 A – Dim ensional tolerances of each part (Planar ER-core) 49 －3－ I EC TR 63090:201 © I EC 201 INTERNATI ONAL ELECTROTECHNI CAL COMMISSI ON D I M E N S I O N AL T O L E R AN C E S O F F E RR I T E C O RE S FOREWORD ) The I nternati on al Electrotechni cal Comm ission (I EC) is a worl d wid e organization for stan dardization com prisin g all n ation al el ectrotechnical comm ittees (I EC National Comm ittees) The object of I EC is to prom ote internati onal co-operation on all questions concerni ng stand ardi zati on in the el ectrical an d electronic fields To this end and in additi on to other acti vities, I EC publish es I nternational Stan dards, Techn ical Specifications, Technical Reports, Publicl y Avail abl e Specificati ons (PAS) an d Gu ides (h ereafter referred to as “I EC Publication(s)”) Thei r preparation is entrusted to technical comm ittees; any I EC National Comm ittee interested in the subj ect dealt with m ay partici pate in this preparatory work I nternational, governm ental an d n on governm ental organ izations l iaising with th e I EC also participate i n this preparation I EC collaborates closel y with the I ntern ational Organi zation for Stand ardization (I SO) in accordance with ditions determ ined by agreem ent between th e two organi zati ons 2) The form al decisions or ag reem ents of I EC on tech nical m atters express, as n early as possible, an i nternati onal consensus of opi nion on the rel evant subjects since each technical com m ittee has representati on from all interested I EC N ational Com m ittees 3) I EC Publications have the form of recomm endations for intern ational use an d are accepted by I EC National Com m ittees in that sense While all reasonable efforts are m ade to ensure that th e technical content of I EC Publications is accu rate, I EC cann ot be h eld responsi ble for th e way in which th ey are used or for an y m isinterpretation by an y en d u ser 4) I n order to prom ote intern ational u niform ity, I EC National Com m ittees und ertake to apply I EC Publications transparentl y to the m axim um extent possible i n their national an d regi on al publicati ons Any d ivergence between an y I EC Publication and the correspondi ng national or regi on al publicati on sh all be clearl y in dicated in the latter 5) I EC itself d oes n ot provi de an y attestation of conform ity I n depend ent certificati on bodies provi de conform ity assessm ent services and, in som e areas, access to I EC m arks of conform ity I EC is not responsi ble for an y services carri ed out by ind ependent certification bodi es 6) All users shou ld ensure that th ey h ave the l atest editi on of thi s publicati on 7) No liability shall attach to I EC or its directors, em ployees, servants or ag ents inclu din g in divi du al experts and m em bers of its tech nical com m ittees and I EC Nati onal Com m ittees for any person al i nju ry, property d am age or other dam age of any n ature whatsoever, wheth er di rect or indirect, or for costs (includ i ng leg al fees) and expenses arisi ng out of the publ ication, use of, or relian ce upon, this I EC Publicati on or any other I EC Publications 8) Attention is drawn to th e N orm ative references cited in th is publ ication Use of the referenced publ ications is indispensable for the correct applicati on of this publication 9) Attention is drawn to the possibility that som e of the elem ents of this I EC Publication m ay be the su bject of patent rig hts I EC shall not be held responsibl e for identifyi ng any or all such patent ri ghts The m ain task of I EC technical comm ittees is to prepare I nternational Standards H owever, a technical committee m ay propose the publication of a technical report when it has collected data of a different kind from that which is norm ally published as an I nternational Standard, for exam ple "state of the art" I EC TR 63090, which is a Technical Report, has been prepared by I EC technical committee 51 : Magnetic components, ferrite and magnetic powder materials The text of this technical report is based on the following docum ents: Enqui ry draft Report on votin g 51 /1 66/DTR 51 /1 86/RVDTR Full information on the voting for the approval of this technical report can be found in th e report on voting in dicated in the above table This docum ent has been drafted in accordance with the I SO/I EC Directives, Part －4－ I EC TR 63090:201 © I EC 201 The com mittee has decided that the contents of this docum ent will remain unchanged until the stability date indicated on the I EC website under "http://webstore iec ch" in the data related to the specific document At this date, the document will be • • • • reconfirmed, withdrawn, replaced by a revised edition, or am ended A bilingual version of this publication m ay be issued at a later date I M P O RT AN T th at it – Th e co n ta i n s u n d e rs t a n d i n g c o l o u r p ri n t e r of ' co l ou r c o l o u rs i ts i n si de' wh i ch c o n te n ts l og o a re U s e rs on th e cover c o n s i d e re d sh ou l d p ag e to t h e re fo re of th i s be p ri n t p u b l i cati on u s e fu l th i s fo r i n d i c ate s th e d ocu m e n t c o rre c t u si n g a －5－ I EC TR 63090:201 © I EC 201 INTRODUCTI ON This document shows the dim ensional tolerances of ferrite cores that are generall y used by ferrite core suppliers As a reference, this is useful for ferrite core suppliers and users when they design ferrite cores and/or the components which use the ferrite cores I EC has published international standards regarding ferrite core dim ensions and their tolerances, as listed in the Table , and core sizes in each core shape were chosen from industrial standards from Europe, J apan and U SA However, there are some cases that lack unity in the dim ensional tolerances even if ferrite core dim ensions are close Because man y new sizes are still designed for the E, ETD/EER, planar ER and ring core, this document gives inform ation about the dim ensional tolerances for reference dimensions of each core shape Tabl e – I E C s t a n d a rd s o f fe rri t e c o re d i m e n s i o n s I E C s t a n d a rd C u rre n t s t a n d a rd I EC 6231 7-1 , Ferrite cores – Dimensions – Part 1: General specification /// I EC 6231 7-2, Ferrite cores – Dimensions – Part 2: Pot-cores for use in telecommunications, power supply, and filter applications I EC 6231 7-3, Ferrite cores – Dimensions – Part 3: Half-pot cores (future stand ard ) I EC 6231 7-4, Ferrite cores – Dimensions – Part 4: RM-cores and associated parts I EC 6231 7-5, Ferrite cores – Dimensions – Part 5: EP-cores and associated parts for use in inductors and transformers I EC 6231 7-6, Ferrite cores – Dimensions – Part 6: ETD-cores for use in power supplies I EC 6231 7-7, Ferrite cores – Dimensions – Part 7: EER-cores I EC 6231 7-8, Ferrite cores – Dimensions – Part 8: E-cores I EC 6231 7-9, Ferrite cores – Dimensions – Part 9: Planar cores I EC 6231 7-1 0, Ferrite cores – Dimensions – Part 10: PM cores (future stand ard) I EC 6231 7-1 , Ferrite cores – Dimensions – Part 11: EC-cores for use in power supply applications I EC 6231 7-1 2, Ferrite cores – Dimensions – Part 12: Ring cores I EC 6231 7-1 3, Ferrite cores – Dimensions – Part 13: PQ-cores for use in power supply applications I EC 6231 7-1 4, Ferrite cores – Dimensions – Part 14: EFD-cores for use in power supply applications /// C a u s e o f v a ri a t i o n s i n I EC 62323 /// /// /// /// /// /// I EC 61 247 /// /// /// /// d i m en si on The shrinkage of powders, the density of m ouldings, the deformation of ferrite cores, etc., are considered as causes of variations in dimension They are gathered in the following cause-and-effect diagram in Figure －6－ powder Sintering Profile d eform ation (see I EC 60401 -1 : 2002, 2) Deform ation Deflection-i n or -out (see I EC 60401 -1 : 2002, or 2) Setting g ap (dim ension ) I EC TR 63090:201 © I EC 201 Shrinkage Sintered d ensity Cause of variations in dimension Mouldi ng d ensity Non -u niform ity of the d ensity Machining Setting g ap (dim ension ) Shaping IEC Figure – Cause-and-effect diagram of variations in dimension Consideration of the dimensional tolerance The dimensional tolerance is considered according to the processing conditions, and the core part is classified into the following three conditions: – decided according to the mould and sintering, or – decided according to the press direction, or – grinding direction －7－ I EC TR 63090:201 © I EC 201 D I M E N S I O N AL T O L E R AN C E S O F F E RR I T E C O RE S S cop e This document gives guidelines on the dim ensional tolerances of ferrite cores This docum ent is considered as general information useful in the dialogue between ferrite core suppliers and users N o rm a t i ve re fe re n c e s There are no normative references in this docum ent T e rm s a n d d e fi n i t i o n s No terms and definitions are listed in this docum ent I SO and I EC maintain term inological databases for use in standardization at the following addresses: • • 4 I EC Electropedia: available at http://www electropedia org/ I SO Online browsing platform : available at http: //www iso.org/obp S u m m a ry o f d i m e n s i o n a l t o l e n c e s o f fe rri t e c o re s G e n e l Figures 3, 5, and show the plots of the specifications of I EC standards and the catalogues of som e ferrite core suppliers The recom mended boundary is the line connected by the supposed maximum points of the specifications of the I EC standards M ost of the points are under the recomm ended boundary D i m en s i on al t o l e n c e s o f E - c o re s Figure represents typical core geometry with the standard dimension nom enclature applied Dim ensional tolerances to recom m end for a new design of E-cores are shown in Table The scatter diagram of dimensional tolerances of each part of E-cores is shown in Figure Dimensional tolerances of each part in the specifications of I EC standards and the catalogues of som e ferrite core suppliers are shown in Table A C A F E B D F i g u re – E - c o re IEC －8－ I EC TR 63090:201 © I EC 201 Table – Dimensional tolerances recommended for a new design of E-cores Dimension Decid ed according to press direction Decid ed according to mould and sintering Grinding direction max dimension A dimension E dimension F dimension C dimension B dimension D mm mm tolerance % tolerance % tolerance % tolerance % tolerance % tolerance % 5< ≤ 10 4, 3, 5, 5, 3, 4, 10 < ≤ 15 4, 2, 3, 3, 2, 3, 15 < ≤ 20 4, 2, 3, 3, 2, 2, 20 < ≤ 25 3, 2, 2, 2, ,5 2, 25 < ≤ 30 2, 2, 2, ,5 30 < ≤ 35 2, 2, ,0 35 < ≤ 40 2, 2, 40 < ≤ 50 2, 2, 50 < ≤ 80 2, － － － － － ± ± － － － － － ± ± ,0 － － ± － － － － － ± － 44 － T a b l e A I EC TR 63090:201 © I EC 201 (2 of 6) Di m en si on E S p e c i fi c a t i o n s i n S p e c i fi c a t i o n s i n S p e c i fi c a t i o n s i n I E C s t a n d a rd catal og u e W catal o g u e X catal og u e Z t o l e n c e ± to l e n c e ± t o l e n c e ± t o l e n c e ± Di m en si on I E C si ze mm mm % mm % mm % mm % ETD1 4, 90 0, 50 3, 0, 50 3, - - 0, 50 3, ETD24 8, 60 0, 60 3, - - - - 0, 60 3, ETD29 22, 70 0, 70 3, 0, 70 3, - - 0, 70 3, ETD34 26, 30 0, 70 2, 0, 70 2, - - 0, 70 2, ETD39 30, 0, 80 2, 0, 80 2, - - 0, 80 2, ETD44 33, 30 0, 80 2, 0, 80 2, - - 0, 80 2, ETD49 37, 00 0, 90 2, 0, 90 2, - - 0, 90 2, ETD54 41 , 20 ,1 2, - - - - - - ETD59 44, 70 ,1 2, - - - - - - EER25, 20, 30 0, 60 3, - - - - - - EER28, EER28L 21 , 70 0, 60 2, - - - - - - EER35 26, 0, 80 3, - - - - - - EER39 29, 20 0, 80 2, - - - - - - EER40 29, 90 0, 90 3, - - - - - - - 29, 50 - - , 00 3, - - - - EER42 30, 0, 90 3, - - - - - - - 31 , 00 - - , 00 3, - - - - EER49 37, 1 ,1 3, - - - - - - － 45 － I EC TR 63090:201 © I EC 201 T a b l e A (3 of 6) Di m en si on ϕF S p e c i fi c a t i o n s i n S p e c i fi c a t i o n s i n S p e c i fi c a t i o n s i n catal og u e W catal og u e X catal og u e Z to l e n c e ± to l e n c e ± t o l e n c e ± I E C s t a n d a rd Di m en si on I E C si ze mm to l e n c e ± mm % mm % mm % mm % ETD1 7, 40 0, 20 2, 0, 20 2, - - 0, 20 2, ETD24 8, 50 0, 30 3, - - - - - - - 8, 50 - - - - 0, 20 2, 0, 20 2, ETD29 9, 50 0, 30 3, 0, 30 3, 0, 30 3, 0, 30 3, ETD34 0, 80 0, 30 2, 0, 30 2, 0, 30 2, 0, 30 2, ETD39 2, 50 0, 30 2, 0, 30 2, 0, 30 2, 0, 30 2, ETD44 4, 80 0, 40 2, - - 0, 40 2, 0, 40 2, - 4, 90 - - 0, 30 2, - - - - ETD49 6, 30 0, 40 2, - - 0, 40 2, 0, 40 2, - 6, 40 - - 0, 30 ,8 - - - - ETD54 8, 90 0, 40 2, - - - - - - ETD59 21 , 65 0, 45 2, - - - - - - EER25, 7, 50 0, 25 3, - - 0, 25 3, - - - 7, 50 - - - - - - 0, 2, - 7, 50 - - 0, 20 2, - - - - EER28, EER28L 9, 90 0, 30 3, - - 0, 30 3, 0, 25 2, - 9, 90 - - 0, 20 2, - - - - - 9, 90 - - - - - - 0, 25 2, EER35 1 , 30 0, 30 2, 0, 30 2, 0, 30 2, - - - 1 , 30 - - - - - - 0, ,3 EER39 2, 80 0, 30 2, - - - - - - EER40 3, 30 0, 25 ,9 - - 0, 25 ,9 0, 25 ,9 - 3, 30 - - 0, 30 2, - - - - EER42 5, 20 0, 40 2, - - - - - - - 5, 20 - - - - 0, 20 ,3 - - - 5, 50 - - - - - - 0, 25 ,6 - 5, 38 - - 0, 38 2, - - - - - 7, 30 - - 0, 25 ,4 0, 25 ,4 0, 25 ,4 EER49 7, 20 0, 40 2, 0, 20 ,2 - - - - － 46 － T a b l e A I EC TR 63090:201 © I EC 201 (4 of 6) Di m en si on C S p e c i fi c a t i o n s i n S p e c i fi c a t i o n s i n S p e c i fi c a t i o n s i n I E C s t a n d a rd catal og u e W catal og u e X catal og u e Z t o l e n c e ± to l e n c e ± t o l e n c e ± t o l e n c e ± Di m en si on I E C si ze mm mm % mm % mm % mm % ETD1 7, 40 0, 20 2, 0, 20 2, - - 0, 20 2, ETD24 8, 50 0, 30 3, - - - - - - - 8, 50 - - - - - - 0, 20 2, - 8, 50 - - - - 0, 40 4, - - ETD29 9, 50 0, 30 3, 0, 30 3, - - 0, 30 3, - 9, 50 - - - - 0, 40 4, - - ETD34 0, 80 0, 30 2, 0, 30 2, 0, 30 2, - - - 0, 80 - - - - - - 0, 38 3, ETD39 2, 50 0, 30 2, 0, 30 2, 0, 30 2, - - - 2, 58 - - - - - - 0, 38 3, ETD44 4, 80 0, 40 2, - - 0, 40 2, - - - 4, 90 - - 0, 30 2, - - - - - 4, 90 - - - - - - 0, 50 3, ETD49 6, 30 0, 40 2, - - - - - - - 6, 40 - - 0, 30 ,8 0, 40 2, 0, 50 3, ETD54 8, 90 0, 40 2, - - - - - - ETD59 21 , 65 0, 45 2, - - - - - - EER25, 7, 50 0, 25 3, - - 0, 25 3, - - - 7, 50 - - 0, 20 2, - - 0, 20 2, EER28, EER28L 1 , 40 0, 30 2, - - 0, 30 2, - - - 1 , 40 - - 0, 25 2, - - 0, 25 2, EER35 1 , 30 0, 30 2, 0, 30 2, 0, 30 2, - - - 1 , 30 - - - - - - 0, 20 ,8 EER39 2, 80 0, 30 2, - - - - - - EER40 3, 30 0, 25 ,9 - - 0, 25 ,9 0, 25 ,9 - 3, 30 - - 0, 30 2, - - - - EER42 5, 20 0, 40 2, - - 0, 40 2, - - - 5, 20 - - 0, 25 ,6 - - - - 5, 50 - - - - - - 0, 25 ,6 - 9, 60 - - 0, 40 2, 0, 40 2, 0, 40 2, EER49 7, 20 0, 40 2, 0, 40 2, - - - - － 47 － I EC TR 63090:201 © I EC 201 T a b l e A (5 of 6) Di m en si on B S p e c i fi c a t i o n s i n S p e c i fi c a t i o n s i n I E C s t a n d a rd catal og u e W catal og u e X to l e n c e ± to l e n c e ± to l e n c e ± S p e c i fi c a t i o n s in catal og u e Z Di m en si on I E C si ze mm mm % mm % mm t o l e n c e ± % mm % ETD1 3, 65 0, ,1 0, ,1 - - 0, ,1 ETD24 4, 45 0, ,0 - - 0, ,0 0, ,0 ETD29 5, 80 0, 20 ,3 0, 40 2, 0, 40 2, 0, 0, ETD34 7, 30 0, 20 ,2 0, 20 ,2 0, 30 ,7 0, ,2 ETD39 9, 80 0, 20 ,0 0, 20 ,0 0, 30 ,5 0, ,0 ETD44 22, 30 0, 20 0, 0, 20 0, 0, 40 ,8 0, 0, ETD49 24, 70 0, 20 0, 0, 20 0, 0, 40 - 0, 0, ETD54 27, 60 0, 20 0, - - - - - - ETD59 31 , 00 0, 20 0, - - - - - - 9, 30 0, 25 2, 0, 20 2, 0, 25 2, 0, 2, EER28 4, 00 0, 30 2, 0, 20 ,4 0, 30 2, 0, ,4 EER28L 6, 90 0, 30 ,8 0, 25 ,5 0, 30 ,8 0, 25 ,5 EER35 20, 70 0, 30 ,4 0, 30 ,4 0, 30 ,4 0, ,0 EER39 22, 20 0, 40 ,8 0, 20 0, 0, 30 ,4 - - EER40 22, 40 0, 20 0, 0, 30 ,3 0, 20 0, 0, 0, EER42 21 , 20 0, 40 ,9 0, 20 0, 0, 20 0, 0, 0, - 22, 40 - - - - 0, 20 0, 0, 0, EER49 31 , 20 0, 40 ,3 0, 30 ,0 - - - - EER25, － 48 － T a b l e A I EC TR 63090:201 © I EC 201 (6 of 6) Di m en si on D S p e c i fi c a t i o n s i n S p e c i fi c a t i o n s i n S p e c i fi c a t i o n s i n I E C s t a n d a rd catal og u e W catal og u e X catal og u e Z to l e n c e ± to l e n c e ± to l e n c e ± to l e n c e ± Di m en si on I E C si ze mm mm % mm % mm % mm % ETD1 9, 40 0, 20 2, 0, 20 2, - - 0, 20 2, ETD24 0, 0, 20 2, - 2, 0, 20 2, 0, 20 2, ETD29 1 , 00 0, 30 2, 0, 30 2, 0, 30 2, 0, 30 2, ETD34 2, 0, 30 2, 0, 30 2, 0, 30 2, 0, 30 2, ETD39 4, 60 0, 40 2, 0, 40 2, 0, 30 2, 0, 40 2, ETD44 6, 50 0, 40 2, 0, 40 2, 0, 40 2, 0, 40 2, ETD49 8, 0, 40 2, 0, 40 2, 0, 40 - 0, 40 2, ETD54 20, 20 0, 40 2, - - - - - - ETD59 22, 45 0, 45 2, - - - - - - EER25, 6, 20 0, 25 4, 0, 1 ,6 0, 25 4, 0, 20 3, EER28 9, 60 0, 30 3, 0, 25 2, 0, 30 3, 0, 25 2, EER28L 2, 50 0, 30 2, - - 0, 30 2, - - - 2, 53 - - - - - - 0, 28 2, - 2, 60 - - 0, 30 2, - - - - EER35 4, 70 0, 30 2, 0, 30 2, 0, 30 2, 0, 30 2, EER39 7, 00 0, 40 2, 0, 25 ,5 0, 25 ,5 - - EER40 5, 40 0, 30 ,9 0, 30 ,9 0, 25 ,6 0, 30 ,9 EER42 5, 30 0, 40 2, - - - - - - - 5, 25 - - 0, 25 ,6 0, 25 ,6 0, 25 ,6 - 5, 40 - - - - 0, 30 ,9 0, 30 ,9 EER49 22, 70 0, 40 ,8 0, 20 0, - - - - － 49 － I EC TR 63090:201 © I EC 201 A P l a n a r E R-c o re T a b l e A – D i m e n s i o n a l t o l e n c e s o f e a c h Di m en si on p a rt (1 of 6) A S p e c i fi c a t i o n s i n S p e c i fi c a t i o n s i n Di m en si on I E C si ze mm I E C s t a n d a rd catal og u e W catal og u e Z t o l e n c e ± t o l e n c e ± to l e n c e ± mm % mm % mm % ER9, 5/2, 5/5 9, 35 0, 20 2, - - 0, ,6 - 9, 30 - - 0, 20 2, - - ER1 /2, 5/6 0, 83 0, ,6 - - 0, ,6 - 0, 80 - - 0, 20 ,9 - - ER1 3/3/9 2, 80 0, 30 2, - - - - ER1 4, 5/3/7 4, 50 0, 20 ,4 0, 20 ,4 0, 20 ,4 ER1 8/3/1 8, 00 0, 35 ,9 - - - - - 8, - - 0, 30 ,7 0, 30 ,7 ER20/6/1 20, 00 0, 35 ,8 - - - - - 22, - - 0, 30 ,4 0, 35 ,6 ER23/3,6/1 23, 20 0, 45 ,9 - - - - ER/23/5/1 23, 20 0, 45 ,9 - - - - ER25/5,5/1 25, 00 0, 40 ,6 - - - - - 25, 30 - - 0, 40 ,6 0, 40 ,6 ER25/8/1 25, 00 0, 40 ,6 - - - - ER25/6/1 25, 00 0, 50 2, - - - - ER25/6/1 25, 00 0, 40 ,6 - - - - ER30/8/20 30, 00 0, 40 ,3 - - - - ER32/5/21 32, 00 0, 60 ,9 - - - - ER32/6/25 32, 20 0, 55 ,7 - - - - ER35/1 0/26 35, 00 0, 40 ,1 - - - - ER40/1 0/28 40, 00 0, 40 ,0 - - - - － 50 － T a b l e A I EC TR 63090:201 © I EC 201 (2 of 6) Di m en si on E S p e c i fi c a t i o n s i n S p e c i fi c a t i o n s i n Di m en si on I E C s i ze mm I E C s t a n d a rd catal og u e W catal og u e Z t o l e n c e ± to l e n c e ± t o l e n c e ± mm % mm % mm % ER9, 5/2, 5/5 7, 63 0, ,6 - - - - - 7, 90 - - 0, 20 2, - - ER1 /2, 5/6 8, 85 0, ,7 - - - - ER1 3/3/9 1 , 20 0, 30 2, - - - - ER1 4, 5/3/7 1 , 80 0, 20 ,7 0, 20 ,7 0, 20 ,7 - 5, 25 - - 0, 25 ,6 - - ER1 8/3/1 5, 60 0, 30 ,9 - - - - - 5, 75 - - 0, 20 ,3 0, 25 ,6 ER20/6/1 8, 00 0, 35 ,9 - - - - - 9, 70 - - - - 0, 30 ,5 ER23/3, 6/1 20, 20 0, 40 2, - - - - ER/23/5/1 20, 20 0, 40 2, - - - - ER25/5, 5/1 22, 00 0, 40 ,8 - - - - - 22, 90 - - 0, 40 ,7 0, 40 ,7 ER25/8/1 22, 00 0, 40 ,8 - - - - ER25/6/1 21 , 70 0, 40 ,8 - - - - ER25/6/1 22, 00 0, 40 ,8 - - - - ER30/8/20 26, 00 0, 40 ,5 - - - - ER32/5/21 29, 70 0, 50 ,7 - - - - ER32/6/25 27, 20 0, 40 ,5 - - - - ER35/1 0/26 30, 00 0, 40 ,3 - - - - ER40/1 0/28 35, 00 0, 40 ,1 - - - - － 51 － I EC TR 63090:201 © I EC 201 (3 of 6) T a b l e A Di m en si on ϕF S p e c i fi c a t i o n s i n S p e c i fi c a t i o n s i n I E C s t a n d a rd catal og u e W catal og u e Z to l e n c e ± to l e n c e ± t o l e n c e ± Di m en si on I EC si ze mm mm % mm % mm % ER9, 5/2, 5/5 3, 40 0, 4, - - 0, 2, - 3, 35 - - 0, 4, - - ER1 /2, 5/6 4, 0, 3, - - 0, 3, - 4, - - 0, 3, - - ER1 3/3/9 5, 00 0, 3, - - - - ER1 4, 5/3/7 4, 70 0, 2, 0, 2, 0, 2, ER1 8/3/1 6, 20 0, 2, - - - - - 6, 00 - - 0, 1 ,7 0, 1 ,7 ER20/6/1 8, 80 0, ,7 - - - - - 6, 80 - - 0, 1 ,5 0, 1 ,5 ER23/3, 6/1 8, 00 0, 20 2, - - - - ER/23/5/1 8, 00 0, 20 2, - - - - ER25/5, 5/1 1 , 00 0, 20 ,8 - - - - 7, 00 - - 0, 2, 0, 2, ER25/8/1 1 , 00 0, 20 ,8 - - - - ER25/6/1 9, 40 0, 20 2, - - - - ER25/6/1 1 , 00 0, 20 ,8 - - - - - ER30/8/20 1 , 00 0, 20 ,8 - - - - ER32/5/21 1 , 20 0, 20 ,8 - - 0, 2, ER32/6/25 2, 35 0, 20 ,6 0, 4, - - ER35/1 0/26 4, 40 0, 30 2, - - 0, 3, ER40/1 0/28 4, 90 0, 30 2, 0, 3, - - － 52 － I EC TR 63090:201 © I EC 201 (4 of 6) T a b l e A Di m en si on C S p e c i fi c a t i o n s i n S p e c i fi c a t i o n s i n Di m en si on I E C si ze mm I E C s t a n d a rd catal og u e W catal og u e Z t o l e n c e ± to l e n c e ± to l e n c e ± mm % mm % mm % ER9, 5/2, 5/5 4, 90 0, 2, - - 0, 2, - 5, 05 - - 0, 3, - - ER1 /2, 5/6 5, 90 0, 1 ,7 0, 1 ,7 0, 1 ,7 ER1 3/3/9 8, 70 0, 25 2, - - - - ER1 4, 5/3/7 6, 70 0, 1 ,5 0, 1 ,5 0, 1 ,5 ER1 8/3/1 9, 70 0, 20 2, - - - - - 2, 00 - - 0, 20 ,7 0, 20 ,7 ER20/6/1 4, 00 0, 30 2, - - - - - 5, 25 - - 0, 25 ,6 0, 25 ,6 ER23/3, 6/1 2, 50 0, 25 2, - - - - ER/23/5/1 2, 50 0, 25 2, - - - - ER25/5, 5/1 8, 00 0, 30 ,7 0, 40 2, 0, 40 2, ER25/8/1 8, 00 0, 30 ,7 - - - - ER25/6/1 4, 80 0, 30 2, - - - - ER25/6/1 8, 00 0, 30 ,7 - - - - ER30/8/20 20, 00 0, 30 ,5 - - - - ER32/5/21 21 , 00 0, 40 ,9 - - - - ER32/6/25 25, 40 0, 40 ,6 - - - - ER35/1 0/26 26, 00 0, 40 ,5 - - - - ER40/1 0/28 28, 00 0, 40 ,4 - - - - － 53 － I EC TR 63090:201 © I EC 201 (5 of 6) T a b l e A Di m en si on B S p e c i fi c a t i o n s i n S p e c i fi c a t i o n s i n Di m en si on I E C s i ze mm I E C s t a n d a rd catal og u e W catal og u e Z to l e n c e ± t o l e n c e ± to l e n c e ± mm % mm % mm % ER9, 5/2, 5/5 2, 45 0, 08 3, - - 0, 05 2, - 2, 30 - - 0, 4, - - ER1 /2, 5/6 2, 45 0, 08 3, 0, 4, 0, 05 2, ER1 3/3/9 2, 85 0, 08 2, - - - - ER1 4, 5/3/7 2, 95 0, 05 ,7 - - 0, 05 ,7 - 2, 90 - - 0, 3, - - ER1 8/3/1 3, 0, 3, - - - - - 2, 50 - - - - 0, 4, - 3, 00 - - 0, 3, - - ER20/6/1 6, 30 0, 1 ,6 - - - - - 2, 75 - - - - 0, 3, - 3, 30 - - 0, 3, - - ER23/3, 6/1 3, 60 0, 2, - - - - ER/23/5/1 5, 0, 2, - - - - - 2, 75 - - - - 0, 3, - 3, 35 - - 0, 3, - - ER25/8/1 8, 00 0, 1 ,3 - - - - ER25/6/1 5, 50 0, 1 ,8 - - - - ER25/6/1 5, 60 0, 05 0, - - - - ER30/8/20 8, 00 0, ,9 - - - - ER32/5/21 5, 0, 2, - - - - ER32/6/25 5, 99 0, 2, - - - - ER35/1 0/26 0, 00 0, 1 ,0 - - - - ER40/1 0/28 0, 00 0, 1 ,0 - - - - － 54 － I EC TR 63090:201 © I EC 201 (6 of 6) T a b l e A Di m en si on D S p e c i fi c a t i o n s i n S p e c i fi c a t i o n s i n I E C s t a n d a rd catal og u e W catal og u e Z to l e n c e ± t o l e n c e ± to l e n c e ± Di m en si on I E C si ze mm mm % mm % mm % ER9, 5/2, 5/5 , 68 0, 08 4, - - 0, 08 4, - , 60 - - 0, 05 3, - - ER1 /2, 5/6 , 58 0, 08 4, - - 0, 08 4, - , 60 - - 0, 6, - - ER1 3/3/9 , 75 0, 7, - - - - ER1 4, 5/3/7 , 65 0, 6, 0, 6, 0, 6, ER1 8/3/1 , 60 0, 6, - - - - ER1 8/5/1 , 00 - - - - 0, 1 0, - , 50 - - 0, 6, - - ER20/6/1 4, 0, 3, - - - - ER22/5, 5/1 , 00 - - - - 0, 1 0, - , 80 - - 0, 5, - - ER23/3, 6/1 , 60 0, 6, - - - - ER/23/5/1 3, 0, 3, - - - - ER25/5, 5/1 , 00 - - - - 0, 1 0, - , 75 - - 0, 5, - - ER25/8/1 3, 0, 3, - - - - ER25/6/1 3, 0, 3, - - - - ER25/6/1 3, 20 0, 4, - - - - ER30/8/20 5, 30 0, 20 3, - - - - ER32/5/21 2, 70 0, 3, - - - - ER32/6/25 2, 78 0, 4, - - - - ER35/1 0/26 5, 0, 2, - - - - ER40/1 0/28 5, 0, 2, - - - - I EC TR 63090:201 © I EC 201 － 55 － Bibliography I EC 60401 -1 : 2002, Terms and nomenclature for cores made of magnetically soft ferrites – Part : Terms used for physical irregularities INTERNATIONAL ELECTROTECHNICAL COMMISSI ON 3, rue de Varembé PO Box 31 CH-1 21 Geneva 20 Switzerland Tel: + 41 22 91 02 1 Fax: + 41 22 91 03 00 info@iec.ch www.iec.ch