1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 60115-8:2012Fixed resistors for use in electronic equipmentPart 8: Sectional specification -Fixed surface mount resistorsNational forewordThe CENELEC common modifications h
2、ave been implemented at the appropriate places in the text and are indicated by a vertical line in the leftBRITISH STANDARDBS EN 60115-8:2012The UK participation in its preparation was entrusted to Technical Committee EPL/40X, Capacitors and resistors for electronic equipment.A list of organizations
3、 represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.ISBN
4、978 0 580 58318 6ICS 31.040.10This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 2012. The British Standards Institution 2012. Published by BSI Standards Limited 2012Date Text affectedmargin of the text.Amendments/corrigenda issued since publ
5、icationThis British Standard is the UK implementation of EN 60115-8:2012. It was derived by CENELEC from IEC 60115-8:2009. It supersedes BS EN 140400:2003 and BS QC 400600:1990 (dual numbered as IEC 60115-8:1989), which are withdrawn.DecemberEUROPEAN STANDARD EN 60115-8 NORME EUROPENNE EUROPISCHE NO
6、RM September 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 rights of exploitation in any form and by any m
7、eans reserved worldwide for CENELEC members. Ref. No. EN 60115-8:2012 E ICS 31.040.10 English version Fixed resistors for use in electronic equipment - Part 8: Sectional specification - Fixed surface mount resistors (IEC 60115-8:2009, modified) Rsistances fixes utilises dans les quipements lectroniq
8、ues - Partie 8 : Spcification intermdiaire - Rsistances fixes pour montage en surface (CEI 60115-8:2009, modifie) Festwiderstnde zur Verwendung in Gerten der Elektronik - Teil 8: Rahmenspezifikation - Oberflchenmontierbare (SMD) Festwiderstnde (IEC 60115-8:2009, modifiziert) This European Standard w
9、as approved by CENELEC on 2012-08-13. CENELEC members are bound to 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 su
10、ch national standards may be obtained on application to the CEN-CENELEC 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 int
11、o its own language and notified to the CEN-CENELEC Management Centre 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 M
12、acedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. - 2 - CONTENTS Foreword 51 General 61.1 Scope 61.2 Object . 61
13、.3 Normative references 61.4 Information to be specified in a detail specification 61.4.1 Outline drawing . 71.4.2 Style and dimensions . 71.4.3 Climatic category . 71.4.4 Limits of resistance change after testing 71.4.5 Resistance range . 71.4.6 Tolerance on rated resistance . 71.4.7 Temperature co
14、efficient of resistance 71.4.8 Rated dissipation . 71.4.9 Limiting element voltage 71.4.10 Insulation voltage 81.4.11 Insulation resistance 81.4.12 Marking . 81.4.13 Ordering information 81.4.14 Mounting . 81.4.15 Storage . 81.4.16 Additional information 81.5 Product classification 82 Preferred char
15、acteristics, ratings and test severities . 92.1 Preferred characteristics . 92.1.1 Style and dimensions . 92.1.2 Preferred climatic categories . 112.1.3 Variation of resistance with temperature 112.1.4 Limits for change in resistance 122.2 Preferred values of ratings 142.2.1 Rated resistance . 142.2
16、.2 Tolerance on rated resistance . 142.2.3 Rated dissipation P70142.2.4 Limiting element voltage Umax152.2.5 Insulation resistance 152.2.6 Insulation voltage 152.3 Preferred test severities 152.3.1 Short time overload . 152.3.2 Solderability 162.3.3 Resistance to soldering heat 172.3.4 Shock test .
17、182.3.5 Vibration test . 182.3.6 Single-pulse high-voltage overload test . 182.3.7 Component solvent resistance . 192.3.8 Solvent resistance of marking 192.3.9 Shear (adhesion) test 192.3.10 Substrate bending test . 19BS EN 60115-8:2012 EN 60115-8:2012 (E) - 3 - 2.3.11 Resistance to electrostatic di
18、scharge (ESD) 202.3.12 Periodic pulse overload test . 202.4 Preparation of specimen 202.4.1 Drying . 202.4.2 Mounting of components 213 Quality assessment procedures 223.1 General . 223.2 Definitions . 233.2.1 Primary stage of manufacture 233.2.2 Structurally similar components . 233.2.3 Assessment
19、level EZ . 233.3 Formation of inspection lots . 233.4 Qualification approval (QA) procedures . 243.4.1 Granting the approval for products classified to level P 243.4.2 Granting the approval for products classified to level R . 243.5 Quality conformance inspection . 243.6 Capability approval (CA) pro
20、cedures . 253.7 Technology approval (TA) procedures . 253.8 Delayed delivery 253.9 Certified test records . 253.10 Failure rate level . 253.11 Certificate of conformity (CoC) 25Annex A (normative) 0 resistors (Jumper) . 36A.1Information to be specified in a detail specification . 36A.2Preferred char
21、acteristics. 36A.3Preferred ratings 36A.4Preferred severities 36A.5Test schedule for qualification approval 37A.6Test schedule for quality conformance inspection . 37Annex B (informative) Letter symbols and abbreviations . 38B.1Letter symbols 38B.2Abbreviations . 39Annex ZX (informative) Cross refer
22、ence to EN 140400 40Bibliography 42Figure 1 Shape and dimensions of rectangular (RR) resistors 9Figure 2 Shape and dimensions of cylindrical (RC) resistors 10Figure 3a Derating curve . 14Figure 3b Derating curve for power resistors 15Figure 4 Basic layout for mechanical, environmental and electrical
23、 tests, Kelvin (4 point) connections 21Figure 5 Attachment of the sense line for Kelvin (4 point) connections for specimen with rated resistance lower than 100 m 21Figure 6 Basic layout for mechanical, environmental and electrical tests 22Table 1a Preferred styles for rectangular (RR) resistors . 10
24、BS EN 60115-8:2012 EN 60115-8:2012 (E)- 4 - Table 1b Preferred styles for cylindrical (RC) resistors . 11Table 2 Permitted change of resistance . 12Table 3a Limits for change of resistance 13Table 3b Limits for change of resistance 13Table 4 Shear test force . 19Table 5 Soldering pad dimensions . 22
25、Table 6 Test schedule for qualification approval . 26Table 7a Test schedule for quality conformance inspection: Lot-by-lot tests . 31Table 7b Test schedule for quality conformance inspection: Periodic tests . 32Table ZX.1 Cross reference to EN 140400 . 40BS EN 60115-8:2012 EN 60115-8:2012 (E) - 5 -
26、Foreword This document EN 60115-8:2012 consists of the text of IEC 60115-8:2009, prepared by IEC/TC 40 “Capacitors and resistors for electronic equipment“, together with the common modifications prepared by the Technical Committee CLC/TC 40XB “Resistors“. The following dates are fixed: latest date b
27、y which this document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2013-08-13 latest date by which the national standards conflictingwith this document have to be withdrawn (dow) 2015-08-13 This document supersedes EN 140400:2003. P
28、receding documents on the subject covered by this specification have been: EN 140400:1996-11 CECC 40 400:1989-00, EN 60115-8:2012 includes the following significant technical changes with respect to EN 140400:2003: introduction of a product classification based on application requirements; extension
29、 of the list of styles and dimensions; introduction of the code letters for temperature coefficient as given in EN 60062; introduction of description and test methods for lead-free soldering; introduction of a new system of test severities for the shear test; introduction of new test severities for
30、the single-pulse high-voltage overload test; introduction of a test on the resistance to electrostatic discharge; amendment of the prescriptions for mounting of components; adoption of the IECQ rules of procedure, QC 001002-3:2005; separation of the test schedule into separate tables for qualificati
31、on approval and for quality conformance inspection; consolidation of the prescription for 0 resistors in a new annex; editorial revision. In this document, the common modifications to IEC 60115-8:2009 are indicated by a vertical line in the left margin of the text. Attention is drawn to the possibil
32、ity that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. BS EN 60115-8:2012 EN 60115-8:2012 (E)- 6 - 1 General 1.1 Scope This part of EN 60115 is applicable to fixed surface mou
33、nt resistors for use in electronic equipment. These resistors are typically described according to types (different geometric shapes) and styles (different dimensions). They have metallized terminations and are primarily intended to be mounted directly on to a circuit board. 1.2 Object The object of
34、 this standard is to prescribe preferred ratings and characteristics and to select from EN 60115-1, the appropriate quality assessment procedures, tests and measuring methods and to give general performance requirements for this type of resistor. Test severities and requirements prescribed in detail
35、 specifications referring to this sectional specification shall be of equal or higher performance level, because lower performance levels are not permitted. 1.3 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for it
36、s application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 60062:2005 + corrigendum 2007, Marking codes for resistors and capacitors (IEC 60062:2004) EN 60068-1:1994, Environmental
37、testing Part 1: General and guidance (IEC 60068-1:1988 + A1:1992 + corrigendum Oct. 1988) EN 60068-2-20:2008, Environmental testing Part 2-20: Tests Test T: Test methods for solderability and resistance to soldering heat of devices with leads (IEC 60068-2-20:2008) EN 60068-2-58:2004 + corrigendum 20
38、04, Environmental testing Part 2-58: Tests Test Td: Test methods for solderability, resistance to dissolution of metallization and to soldering heat of surface mounting devices (SMD) (IEC 60068-2-58:2004) EN 60115-1:2011, Fixed resistors for use in electronic equipment Part 1: Generic specification
39、(IEC 60115-1:2008, modified) EN 61193-2:2007, Quality assessment systems Part 2: Selection and use of sampling plans for inspection of electronic components and packages (IEC 61193-2:2007) EN 61340-3-1, Electrostatics Part 3-1: Methods for simulation of electrostatic effects Human body model (HBM) e
40、lectrostatic discharge test waveforms (IEC 61340-3-1) EN 61760-1:2006, Surface mounting technology Part 1: Standard method for the specification of surface mounting components (SMDs) (IEC 61760-1:2006) 1.4 Information to be specified in a detail specification Detail specifications shall be derived f
41、rom the relevant blank detail specification. BS EN 60115-8:2012 EN 60115-8:2012 (E) - 7 - Detail specifications shall not specify requirements inferior to those of the generic specification, sectional specification or blank detail specification. When more severe requirements are included, they shall
42、 be listed in a subclause of the detail specification and indicated in the test schedules, for example by a note. The following information shall be given in each detail specification and the values quoted shall preferably be selected from those given in the appropriate clause of this sectional spec
43、ification. 1.4.1 Outline drawing There shall be an illustration of the resistor as an aid to easy recognition and for comparison of the resistor with others. 1.4.2 Style and dimensions See 2.1.1. Dimensions and their associated tolerances, which affect interchangeability and mounting, shall be given
44、 in the detail specification. 1.4.3 Climatic category See 2.1.2. 1.4.4 Limits of resistance change after testing See 2.1.4. 1.4.5 Resistance range See 2.2.1. NOTE When products approved according to the detail specification have different ranges, the following statement should be added: “The range o
45、f values available in each style, together with the associated tolerance and temperature coefficient, is given in the register of approvals, available for example on the website www.iecq.org”. 1.4.6 Tolerance on rated resistance See 2.2.2. 1.4.7 Temperature coefficient of resistance See 2.1.3. 1.4.8
46、 Rated dissipation See 2.2.3. The detail specification shall state the maximum allowable dissipation P70at an ambient temperature of 70 C (i.e. the rated temperature). The detail specification shall state the maximum dissipation at temperatures other than 70 C, for example the derating, either in a
47、diagram or in the form of a statement. All break points shall be verified by test. The mounting conditions are as described in 2.4.2. 1.4.9 Limiting element voltage See 2.2.4. BS EN 60115-8:2012 EN 60115-8:2012 (E)- 8 - 1.4.10 Insulation voltage This information is required only for insulated resist
48、ors. See 2.2.6 and the definition for insulation voltage given in EN 60115-1:2011, 2.2. For small size resistors where the dimensions of the test jig given in EN 60115-1:2011, 4.6 are not adequate, they shall be specified in the detail specification. 1.4.11 Insulation resistance This information is required only for insulated resistors. See 2.2.5. For small size resistors where the dimensions of the test jig given in EN 60115-1
