1、BRITISH STANDARD BS EN 140210:1995 Harmonized system of quality assessment for electronic components Sectional specification Fixed power resistors Capability approval The European Standard EN140210:1994 has the status of a BritishStandardBSEN140210:1995 This BritishStandard, having been prepared und
2、er the directionof the ElectrotechnicalSector Board,was published undertheauthority of the Standards Board and comes into effect on 15June1995 BSI 02-2000 The following BSI references relate to the work on this standard: Committee reference EPL/40 Draft for comment93/30899DC ISBN 0 580 24305 2 Commi
3、ttees responsible for this BritishStandard The preparation of this BritishStandard was entrusted to Technical Committee EPL/40, Capacitors and resistors for electronic equipment, upon which the following bodies were represented: Federation of the Electronics Industry Ministry of Defence National Sup
4、ervising Inspectorate (BSI QA) The following body was also represented in the drafting of the standard, through subcommittees and panels: BEAMA Ltd. Amendments issued since publication Amd. No. Date CommentsBSEN140210:1995 BSI 02-2000 i Contents Page Committees responsible Inside front cover Nationa
5、l foreword ii Foreword 2 Text of EN140210 5 List of references Inside back coverBSEN140210:1995 ii BSI 02-2000 National foreword This BritishStandard has been prepared by Technical Committee EPL/40 and is the English language version of EN140210:1994, Sectional specification: Fixed power resistors C
6、apability approval and its Corrigendum:1994, published by the European Committee for Electrotechnical Standardization (CENELEC) Electronic Components Committee (CECC). A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsibl
7、e for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-references Publication referred to Corresponding BritishStandard EN140000 BS EN140000:1995 Generic specification: Fixed resistors ISO3:1973 BS2045:1965 Preferred numbe
8、rs IEC62 BS EN60062:1994 Specification for marking codes for resistors and capacitors IEC63:1963 BS2488:1966 Schedule of preferred numbers for the resistance of resistors and capacitance of capacitors for telecommunication equipment IEC68 BS2011: Environmental testing BS EN60068 Environmental testin
9、g CECC00114-1 BS EN10014-1 Rule of Procedure14: Quality assessment procedures Part1:1994 Approval of manufacturers and other organizations CECC00114-3 Part3:1993 Capability approval of an electronic component manufacturing activity CECC40200 BS CECC40200:1981 Harmonized system of quality assessment
10、for electronic components: sectional specification: Fixed power resistors Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN title page, pages2 to28, an inside back cover and a back cover. This standard has been updated (see copyright date) and may hav
11、e had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN140210 August1994 +Corrigendum1994 Descriptors: Quality,electronic components, fixed power resistors English version Sectional specification: Fix
12、ed power resistors Capability approval Spcification intermdiaire: Rsistances fixes Agrment de savoir-faire Rahmenspezifikation: Hochbelastbare Festwiderstnde Befhigungsanerkennung This European Standard was approved by the CENELEC Electronic Components Committee (CECC) on13February1993. CENELEC memb
13、ers are bound to comply with 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 t
14、o the General Secretariat of the CECC 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 CECC General
15、Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. The
16、membership of the CECC is identical, with the exception of the national electrotechnical committees of Greece, Iceland and Luxembourg. CECC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central
17、 Secretariat: rue de Stassart 35, B-1050 Brussels 1994 Copyright reserved to CENELEC members Ref. No. EN140210:1994 EEN140210:1994 BSI 02-2000 2 Foreword The CENELEC Electronic Components Committee (CECC) is composed of those member countries of the European Committee for Electrotechnical Standardiz
18、ation (CENELEC) who wish to take part in a harmonized System for electronic components of assessed quality. The object of the System is to facilitate international trade by the harmonization of the specifications and quality assessment procedures for electronic components, and by the grant of an int
19、ernationally recognized Mark, or Certificate, of conformity. The components produced under the System are thereby acceptable in all member countries without further testing. This specification was prepared by CECC WG4A, Fixed resistors. The text of the draft based on document CECC(Secretariat)3164 w
20、as submitted to the formal vote; together with the voting report, circulated as document CECC(Secretariat)3288, it was approved by CECC as EN140210 on13February1993. The following dates were fixed: Contents Page Foreword 2 Section 1. General 1.1 Scope 5 1.2 Related documents 5 1.3 Information to be
21、prescribed in detailedspecifications 5 1.3.1 Outline drawings and dimensions 5 1.3.2 Mounting 5 1.3.3 Marking 5 1.3.4 Ordering information 5 1.3.5 Additional information (not for inspection purposes) 6 1.4 Units, symbols and terminology 6 1.5 Marking of component and package 6 Section 2. Preferred r
22、atings and characteristics 2.1 Preferred climatic categories 7 2.2 Preferred values of ratings 7 2.2.1 Rated resistance 7 2.2.2 Tolerance on rated resistance 7 2.2.3 Rated dissipation 7 2.2.4 Limiting element voltage 7 2.3 Preferred values of characteristics 7 2.3.1 Temperature coefficient of resist
23、ance 7 2.3.2 Limits for change in resistance 7 Section 3. Quality assessment procedures 3.1 Eligibility for capability approval 8 3.2 Primary stage of manufacture 8 3.3 Structural similar components 8 3.4 Procedures for capability approval 8 3.4.1 General 8 3.4.2 Application of capability of approva
24、l 8 3.4.3 Granting of capability approval 8 3.5 Capability manual 8 3.6 Capability qualifying components (CQCs) 9 3.6.1 CQCs for process quality control 9 3.6.2 CQCs for demonstrating limits of capability 9 3.7 Inspection requirements of CQCs 10 3.8 Programme for capability approval 10 3.9 Capabilit
25、y approval test report 10 3.10 Abstract of description of capability 10 3.11 Modification likely to affect the capability approval 10 latest date of announcement of the EN at national level (doa)1994-03-22 latest date of publication of an identical national standard (dop)1994-09-22 latest date of de
26、claration of national standards obsolescence 1994-09-22 latest date of withdrawal of conflicting national standards (dow)2004-03-22EN140210:1994 BSI 02-2000 3 Page 3.12 Initial capability approval 10 3.12.1 Procedure in the event of failure 10 3.12.2 General plan for the selection of CQCs 11 3.12.3
27、Process control test plans 16 3.12.3.1 Winding element visual and dimensional 16 3.12.3.2 Element/termination connectionsvisual examination 16 3.12.3.3 Coating application visual examination 17 3.12.3.4 Temperature profile of oven or kiln 17 3.12.3.5 Lead preparation and soldering visual examination
28、 17 3.12.3.6 Termination completion visual examination 17 3.12.3.7 Bulk metal element fabrication visual examination 17 3.12.3.8 Moisture content of ceramic powders 17 3.12.3.9 Visual examination after pressing 17 3.12.3.10 Visual examination after metallizing 17 3.12.3.11 Batch release for finding
29、after100%resistance measurement 17 3.12.3.12 Marking 18 3.12.3.13 100% resistance test 18 3.12.3.14 Visual examination after packaging 18 3.12.4 Test plans for CQCs demonstrating limits of capability 18 3.12.4.1 Range of case sizes 18 3.12.4.2 Range of terminations 18 3.12.4.3 Minimum, maximum and c
30、ritical resistance in smallest and largest case size 18 3.12.4.4 Numbers of resistor sections per case size (n s ) 19 3.12.4.5 Rated dissipation and case size 19 3.12.4.6 Dissipation at upper category temperature 19 3.12.4.7 Limiting element voltage for smallest and largest case size 19 3.12.4.8 Ove
31、rload 19 3.12.4.9 Isolation voltage 19 3.12.4.10 Temperature characteristic of resistance 19 3.12.4.11 Climatic category 19 3.12.4.12 Rated temperature 19 3.12.4.13 Vibration severity 19 3.12.4.14 Bump or shock severity 19 Page 3.12.4.15 Low air pressure severity 19 3.12.4.16 Reactance 19 3.12.4.17
32、Robustness of the resistor body 19 3.13 Maintenance of capability approval 20 3.14 Extension of capability approval 20 3.15 Quality conformance inspection 20 3.16 Screening procedures 20 3.17 Delayed delivery 20 Section 4. Test and measurement procedures Annex A Example of an abstract description of
33、 capability for inclusion in CECC00200 26 Annex B Layout of the front page of a CQC specification 27 Annex C Requirements for capability approvaltest report 27 Annex D Requirements for the form and content of a capability manual 28 Figure 1a Conformal-coated wire/tape-wound power resistor manufactur
34、e. Mandatory process controls and process-control CQCs are denotedby double borders 11 Figure 1b Mental-case or insulated-case wire/tape-wound power resistor manufacture. Mandatory process controls and process-control CQCs are denoted by double borders 12 Figure 1c Metal bulk element power resistor
35、manufacture. Mandatory process controls and process-control CQCs are denoted by double borders 13 Figure 1d Ceramic/carbon power resistor. Mandatory process controls and process control CQCs are denoted by double borders 14 Figure 1e Manufacture of power resistor. Mandatory process controls and proc
36、ess-control CQCs are denoted by double borders 15 Figure 1f Maintenance of capability approval for power resistors. Mandatory capability-limit CQCs 16 Table 0.1 7 Table 1 Test schedule for initial capability approval limits of capability 21 Table 2 Test schedule maintenance of capability approval, p
37、rocess control 254 blankEN140210:1994 BSI 02-2000 5 Section 1. General 1.1 Scope This specification applies to fixed power resistors with related dissipation not less than2W, primarily intended for applications in electronic equipment. These resistors may be either manufactured to customers requirem
38、ents or manufacturers standard catalogue items. It gives preferred ratings and characteristics and selects from the generic specification EN140000 the appropriate capability approval procedures. 1.2 Related documents NOTEThe above references apply to the current editions except for IEC68. 1.3 Inform
39、ation to be prescribed in detail specifications The requirements of this sub-clause apply to detail specifications for both customer specified and standard catalogue items. The requirements for the preparation and layout of detail specifications are given by the capability approval blank detail spec
40、ification EN140211. A manufacturer wishing to supply a resistor or range of resistors covered by his capability as standard catalogue items shall produce a detail specification in accordance with the capability approval blank detail specification EN140211. The following minimum information shall be
41、given in each detail specification. 1.3.1 Outline drawing and dimensions There shall be an illustration of the resistor as an aid to easy recognition and for comparison of the resistor with others. Dimensions and their associated tolerances, which affect interchangeability and mounting, shall be giv
42、en. All dimensions shall be stated in millimetres. Normally the numerical values shall be given for the length of the body, the width and height of the body and the wire spacing, or for cylindrical types, the body diameter and the length and diameter of the terminations. When necessary, for example
43、when a number of items (resistance values/voltage ranges) are covered by a detail specification, their dimensions and their associated tolerances shall be placed in a table below the drawing. When the configuration is other than that described above, the detail specification shall state such dimensi
44、onal information as will adequately describe the resistor. It shall be clearly stated in the detail specification whether or not the resistor is designed for use on printed boards. 1.3.2 Mounting The detail specification shall specify the method of mounting recommended for normal use and the method
45、which is mandatory for the application of the vibration, bump or shock tests. The design of the resistor may be such that special mounting fixtures are required in its use. In this case, the detail specification shall describe the mounting fixtures and they shall be used in the application of the vi
46、bration, bump or shock tests. 1.3.3 Marking The detail specification shall specify the content of the marking on the resistor and on the package. See2.4 of EN140000. 1.3.4 Ordering information The detail specification shall prescribe that the following information is required when ordering a resisto
47、r: 1) Quantity; 2) Detail specification number, issue and date; 3) Rated resistance(s); 4) Tolerance on rated resistance(s); ISO3 Preferred numbers Series of preferred numbers IEC62 Marking codes for resistors and capacitors IEC63 Preferred number series for resistors and capacitors Amendment No.1(1
48、967) Amendment No.2(1977) IEC68 Basic environmental testing procedures IEC410 Sampling plans and procedures for inspection by attributes CECC00114-I Rule of Procedure14: Quality Assessment Procedure Part1: Approval of manufacturers and other organizations CECC00114-III Rule of Procedure14: Quality A
49、ssessment Procedures Part3: Capability approval of an electronic component activity EN140000 Generic specifications: Fixed resistors CECC40200 Sectional Specifications: Fixed power resistors (Issue2 with amendments1 and2)EN140210:1994 6 BSI 02-2000 and where applicable: 5) Rated dissipation; 6) Temperature coefficient of resistance; 7) Manufacturers type number. 1.3.5 Additional information (not for inspection purposes) The detail specification may include information which is not normally required to be verified by the i
