1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationMethod for the determination of the space required by capacitors and resistors with unidirectional terminationsBS EN 60717:2012National forewordThis British Standard is the UK im
2、plementation of EN 60717:2012. It is identical to IEC 60717:2012. It supersedes BS 6303:1982 which is withdrawn.The UK participation in its preparation was entrusted to Technical CommitteeEPL/40X, Capacitors and resistors for electronic equipment.A list of organizations represented on this committee
3、 can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 73105 1ICS 31.040; 31.060
4、Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 31 August 2012.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 60717:2012EUROPE
5、AN STANDARD EN 60717 NORME EUROPENNE EUROPISCHE NORM July 2012 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2012 CENELEC - All ri
6、ghts of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60717:2012 E ICS 31.040; 31.060 English version Method for the determination of the space required by capacitors and resistors with unidirectional terminations (IEC 60717:2012) Mthode pour la dtermi
7、nation de lencombrement des condensateurs et rsistances sorties unilatrales (CEI 60717:2012) Verfahren zum Bestimmen des Raumbedarfs bei Kondensatoren und Widerstnden mit einseitigen Anschlssen(IEC 60717:2012) This European Standard was approved by CENELEC on 2012-06-19. CENELEC members are bound to
8、 comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CE
9、NELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Cent
10、re has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Ital
11、y, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 60717:2012EN 60717:2012 - 2 - Foreword The text of document 40/2108/CDV, future edition 2 of IEC 60717, prepared by IEC TC
12、 40, “Capacitors and resistors for electronic equipment“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60717:2012. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard
13、or by endorsement (dop) 2013-03-19 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2015-06-19 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be hel
14、d responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 60717:2012 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following note has to be added for the standar
15、d indicated: IEC 61192-3 NOTE Harmonized as EN 61192-3. BS EN 60717:2012- 3 - EN 60717:2012 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in whole or in part, are normatively referenced in this document
16、 and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (
17、mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60097 - Grid systems for printed circuits EN 60097 - IEC 60294 - Measurement of the dimensions of a cylindrical component with axial terminations EN 60294 -1)IEC 60301 - Preferred diameters of wire terminations of capacitors and
18、 resistors EN 60301 -1)1)To be published. BS EN 60717:2012 2 60717 IEC:2012 CONTENTS 1 Scope . 5 2 Normative references . 5 3 Gauge board 5 4 Width and length 6 5 Height 7 6 Information to be given in the relevant specification 8 Annex A (informative) Cross-reference 9 Bibliography 10 Figure 1 Chamf
19、er of the gauge board holes . 6 Figure 2 Dimensions of a component with two unidirectional wire terminations 7 Figure 3 Dimensions of a component with more than two unidirectional wire terminations 7 Figure 4 Examples for the height of component with unidirectional wire terminations . 8 Table 1 Grid
20、 hole diameters for the gauge board . 6 Table A.1 Cross-references . 9 BS EN 60717:201260717 IEC:2012 5 METHOD FOR THE DETERMINATION OF THE SPACE REQUIRED BY CAPACITORS AND RESISTORS WITH UNIDIRECTIONAL TERMINATIONS 1 Scope This International Standard applies to capacitors and resistors with unidire
21、ctional wire terminations intended for use in electronic equipment. This standard provides a method for determination of the space required by capacitors and resistors with unidirectional wire terminations. NOTE Instead of measuring the actual space, it may be sufficient to ensure that a component f
22、its into the maximum space for which it is designed. This may be achieved by means of fixed gauges. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited
23、 applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60097, Grid systems for printed circuits IEC 60294:, Measurement of the dimensions of a cylindrical component having two axial terminations 1IEC 60301, Preferred diameters of wire
24、terminations of capacitors and resistors 3 Gauge board The gauge board shall provide an orthogonal matrix of holes based on standard grid dimensions as given in IEC 60097. Unless prescribed otherwise by the relevant specification, the nominal grid spacing shall be a multiple of 0,5 mm, preferably 2,
25、5 mm. The non-cumulative tolerance on the relative position of grid holes along the same axis shall be 0,02 mm. The gauge board shall have a nominal thickness T of 1,5 mm. The grid hole diameters shall relate to the dimensions of the wire terminations according to commonly accepted printed circuit b
26、oard practice. Unless prescribed otherwise by the relevant specification, the diameter of grid holes in the gauge board shall be selected from Table 1. _ 1To be published. BS EN 60717:2012 6 60717 IEC:2012 Table 1 Grid hole diameters for the gauge board Diameter d a bof wire terminations mm Diameter
27、 D cof gauge board grid holes mm 0,5 0,6 0,7 and 0,8 1,0 1,2 0,8 1,0 1,3 1,6 1,8 NOTE Rectangular terminations are considered like cylindrical terminations, with a diameter determined by the diagonal of the terminations cross-section.aNominal diameter of the lead wire, permissible tolerance accordin
28、g to IEC 60301. bFor diameters of terminations which do not meet the given values, the prescription for the next larger given diameter shall be applied. cThe tolerance on the grid hole diameter D shall be 0,02 mm.The gauge board grid holes shall be chamfered on the side intended for insertion of the
29、 wire terminations as shown in Figure 1. D (0,20 0,02) mm T 45 IEC 829/12 Key T Thickness of the gauge board D Diameter of the gauge board grid hole Figure 1 Chamfer of the gauge board holes The relevant specification shall prescribe the characteristics of a special gauge board for the scope of comp
30、onents covered therein, if the above prescriptions are not suitable for those components. 4 Width and length The width and length of the space required by a mounted component shall be measured as follows: The terminations of the component to be measured shall be positioned and fully inserted into th
31、e holes of a gauge board with the appropriate grid hole diameter from the chamfered side. Any built-in feature for mounting shaIl be used as intended. No more force than appropriate for the specific terminations shall be applied during insertion. The width W of the component shall be measured as the
32、 distance between two parallel planes perpendicular to the gauge board face and parallel to the lines of grid holes and tangential to the corresponding pair of sides of the component, as shown in Figures 2 and 3. BS EN 60717:201260717 IEC:2012 7 L W IEC 830/12 Key L Length of the space required by a
33、 mounted component W Width of the space required by a mounted component Figure 2 Dimensions of a component with two unidirectional wire terminations L W IEC 831/12 Key L Length of the space required by a mounted component W Width of the space required by a mounted component Figure 3 Dimensions of a
34、component with more than two unidirectional wire terminations Similarly, the length L is the distance between two similar planes at right angles to the width planes and tangential to the other corresponding pair of sides of the component. The parallel planes shall be applied so as to touch the compo
35、nent without deforming the component body or the termination and without causing any displacement of the component. The distances between these planes and the centre lines of the grid mounting holes used for the terminations are a measure of the position of the terminations. 5 Height The height of t
36、he space required by a mounted component shall be measured as follows: The terminations of the component to be measured shall be positioned and fully inserted into the holes of a gauge board with the appropriate grid hole diameter from the chamfered side. Any built-in features for mounting shaIl be
37、used as intended. No more force than appropriate for the specific terminations shall be applied during insertion. BS EN 60717:2012 8 60717 IEC:2012 The height of a mounted component is the distance measured from the seating plane to the highest part of the component, with the seating plane being the
38、 upper surface of the gauge board, see Figure 4. H H H H H IEC 832/12 Key H Height of the space required by a mounted component The relevant specification should prescribe the permissibility of coating material extending onto the terminations. A method for checking the length of such extended coatin
39、g material is given in IEC 60294. NOTE The mounting of components with the coating meniscus directly sitting on the circuit board surface, on the solder land surface, or protruding into the circuit board holes, may contravene the acceptance criteria for good workmanship, see IEC 61192-3. Figure 4 Ex
40、amples for the height of component with unidirectional wire terminations 6 Information to be given in the relevant specification When this method is applied in a relevant specification, the following details shall be given as far as they are applicable: Clause a) the dimension(s) to be measured 4, 5
41、 b) the grid spacing of the gauge board 3 c) the grid hole diameter 3 BS EN 60717:201260717 IEC:2012 9 Annex A (informative) Cross-reference The revision of this standard has resulted in a new clause numbering. Table A.1 provides cross-references between the clause numbering of this edition compared
42、 to the first edition of this standard. Table A.1 Cross-references IEC 60717:1981 1stedition Clause IEC 60717:2012 2ndedition Clause Notes 1 1 Scope and object are merged into one 2 2 New clause 3.1 3.2 3 3.3 3.4 4 4 5 6 New clause BS EN 60717:2012 10 60717 IEC:2012 Bibliography IEC 61192-3, Workman
43、ship requirements for soldered electronic assemblies Part 3: Through-hole mount assemblies _ BS EN 60717:2012This page deliberately left blankBSI is the independent national body responsible for preparing British Standards and other standards-related publications, information and services. It presen
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