1、BRITISH STANDARD BS EN 140211:1995 Specification for Harmonized system of quality assessment for electronic components Blankdetail specification Fixedpower resistors Capability approval The European Standard EN 140211:1994 has the status of a British StandardBSEN 140211:1995 BSI 01-2000 ISBN 0 580 3
2、4089 9 Committees responsible for this British Standard The preparation of this British Standard 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 Defenc
3、e National Supervising Inspectorate (BSI QA) The following body was also represented in the drafting of this standard, through a subcommittee: BEAMA Ltd. Amendments issued since publication Amd. No. Date CommentsBSEN 140211:1995 BSI 01-2000 i Contents Page Committees responsible Inside front cover N
4、ational foreword ii Foreword 2 Text of EN 140211 7BSEN 140211:1995 ii BSI 01-2000 National foreword This British Standard has been prepared under the direction of the Electrotechnical Sector Board. It is the English language version of EN140211:1994 Harmonized system of quality assessment for electr
5、onic components. Blank detail specification: Fixed power resistors Capability approval published by the European Committee for Electrotechnical Standardization (CENELEC) Electronic Components Committee (CECC). EN140211 was prepared by CECC/WG4A “Fixed resistors” and the UnitedKingdom participation i
6、n the drafting was provided by Technical Committee EPL/40 Capacitors and resistors for electronic equipment. This standard lists the ratings, characteristics and inspection requirements which shall be included as mandatory requirements in any detail specification for this type of resistor. Detail sp
7、ecifications shall comply with the requirements of this Blank Detail Specification and BSCECC00111: Rule of Procedure11. Specifications. Part4:1991 Regulations for CECC Detail Specification. The British Standard which implements the CECC Rules of Procedure is BS9000 General requirements for a system
8、 of electronic components of assessed quality Part2:1991 Specification for the national implementation of the CECC system. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance w
9、ith a British Standard does not of itself confer immunity from legal obligations. Cross-references Publication referred to Corresponding British Standard EN 140000:1993 BS EN 140000:1995 Harmonized system of quality assessment for electronic components. Generic specification: Fixed resistors. EN 140
10、210 BS EN 140210:1995 Harmonized system of quality assessment for electronic components. Sectional specification: Fixed power resistors Capability approval. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theEN title page, pages2 to 14, an inside back c
11、over and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 140211 August 1994 UDC Descriptors: Quality, electronic co
12、mponents, fixed power resistors English version Blank Detail Specification: Fixed Power Resistors Capability Approval Spcification particulire cadre: Rsistancesfixes Agrment de savoir-faire Vordruck fr Bauartspezifikation: Hochbelastbare Festwiderstnde Befhigungsanerkennung This European Standard wa
13、s approved by the CENELEC Electronic Components Committee (CECC) on13February1993. CENELEC members 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
14、 bibliographical references concerning such national standards may be obtained on application to 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
15、 the responsibility of a CENELEC member into its own language and notified to the CECC General 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, Ital
16、y, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and United Kingdom. The 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 E
17、uropen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1994 Copyright reserved to CENELEC members Ref. No. EN 140211:1994 EEN 140211:1994 BSI 01-2000 2 Foreword The CENELEC Electronic Components Committee (CE
18、CC) is composed of those member countries of the European Committee for Electrotechnical Standardization (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 spe
19、cifications and quality assessment procedures for electronic components, and by the grant of an internationally 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 prep
20、ared by CECC WG4A “Fixed Resistors”. The text of the draft based on document CECC (Secretariat)3165 was submitted the formal vote; together with the voting report, circulated as document CECC(Secretariat)3289, it was approved by CECC as EN140211 on 13 February 1993. The following dates were fixed: C
21、ontents Page Foreword 2 1 General 7 2 Inspection requirements 8 Table 1 7 Table 2 8 Table 3a Lot-by-Lot inspection (groupsAandB) 9 Table 3b Test schedule for capability qualifyingcomponents 11 latest date of announcement of the ENatnational level (doa) 1994-03-22 latest date of publication ofan iden
22、tical national standard 1994-09-22 latest date of declaration ofnational standards obsolescence (dop) 1994-09-22 latest date of withdrawal ofconflicting national standards (dow) 2004-03-22EN 140211:1994 BSI 01-2000 3EN 140211:1994 4 BSI 01-2000 Key for pages 5 and 6 The numbers between square bracke
23、ts correspond to the following indications, all of which should be given in a manufacturers detail specification for standard catalogue items; only those indicated by an asterisk(*) are required in a detail specification not intended for registration: 1 The name of the National Standards Organisatio
24、n under whose authority the DS is published and, if applicable, the organisation from whom the DS is available. 2 The CECC symbol and the number allocated to the DS by the CECC General Secretariat. 3* The number and issue of the CECC generic and sectional specifications; also national reference, if
25、different. 4 If different from the CECC number, the national number of the DS, date of issue and any further information required by the national system, together with any amendment numbers. 5* A brief description of the component or range of components. 6* Information on typical construction (where
26、 applicable). For5 and6 the text to be given in a DS for registration should be suitable for entry in CECC0020 (Register of Approvals) and CECC00300 (Register of National Documents). 7* An outline drawing with the main dimensions which are of importance for interchangeability, and/or reference to th
27、e appropriate national or international document for outlines. Alternatively, this drawing may be given in an annex to the DS, but7 should always contain an illustration of the general outer appearance of the component. 8* Reference data giving information on the most important properties of the com
28、ponent which allow comparison between the various component types intended for the same, or similar applications.EN 140211:1994 BSI 01-2000 5 Recommended layout for the first page of a manufacturers detail specification for standard catalogue items. Quick reference data: Rated resistance range, resi
29、stance tolerance, rated dissipation range, stability class,climatic category, temperature coefficient of resistance. Specification available from: EN 140211 XX 1 2 Electronic components of assessed quality usingcapability approval detail specification in accordance with 4 3 Outline and dimensions (f
30、irst angle projection) 7 Fixed power resistors 5 Typical construction 6 Insulated/non-insulated 8 Information on the availability of components qualified to this detail specification is available inthecurrent CECC00200.EN 140211:1994 6 BSI 01-2000 Recommended layout for the first page of a customer
31、detail specification not for registration. Quick reference data: Rated resistance range, resistance tolerance, rated dissipation range, stabilityclass,climatic category, temperature coefficient of resistance. Customer: Specification Issue number Manufacturer: Date Electronic components of assessed q
32、uality using capability approval detail specification in accordance with: Manufacturers type number 3 Outline and dimensions (first angle projection) 7 Fixed power resistors 5 Typical construction 6 Insulated/non-insulated 8EN 140211:1994 BSI 01-2000 7 1 General 1.1 Methods of mounting (See1.3.2 of
33、the sectional specification). 1.2 Dimensions, ratings and characteristics Table 1 1.2.1 Derating Resistors covered by this specification are derated according to the following curve: The curve given below is for example only. 1.3 Related documents Maximum dimension Style Rated dissipation at70 C Lim
34、iting element voltage Insulation voltage L D d nom: W V.d.c. or a.c.r.m.s. V.d.c. or a.c.r.m.s. mm mm tol: Resistance range . to .7 Tolerances of rated resistance .% Climatic category -/-/- Low air pressure kPa (. mbar) Stability class .% Temperature coefficient of resistance !:.10 6 / C Overload (i
35、ncluding rest method) Reactance (if specified) Generic specification: EN 140000 Issue1. Sectional specification: EN 140210.EN 140211:1994 8 BSI 01-2000 1.4 Marking The marking of the resistor and the package shall be in accordance with1.5 of the Sectional Specification EN140210. NOTEThe details of t
36、he marking of the component and package shall be given in full in the detail specification. 1.5 Ordering information (not required for CQC detail specifications) Orders for resistors covered by this specification shall contain, in clear or coded form, the following information: a) rated resistance;
37、b) tolerance on rated resistance; c) temperature coefficient of resistance; d) number and issue reference of detail specification and style reference. 1.6 Additional information (not for inspection purposes) This clause will be used to give information about properties of the resistor(s) which are n
38、ot demonstrated by the quality conformance inspection as given inTable 3a or the performance limits of the capability as demonstrated by the CQCs. Table 2 2 Inspection requirements 2.1 Procedures 2.1.1 For initial Capability Approval the procedure shall be in accordance with3.12 of EN140210. 2.1.2 F
39、or maintenance of Capability Approval the procedures shall be in accordance with3.13 of EN140210. 2.1.3 For Quality Conformance inspection the test schedule(Table 3a) includes sampling, severities and requirements. This inspection is carried out for group A on each manufacturing lot and for group B
40、on a group of manufacturing lots where the resistors are structurally similar for the relevant test. Additional information This table is to be used for providing any additional information which is more readily expressed in tabular form.EN 140211:1994 BSI 01-2000 9 Table 3a Lot-by-Lot inspection (g
41、roups A and B) For a manufacturers detail specification for a catalogue item all the tests of this table shall be included in the detail specification. For a customer detail specification a selection of these tests may be made, as agreed between manufacturer and customer. This table is not used for
42、a CQC detail specification. Clause number and test (seenote 1) D or ND Conditions of test IL AQL Performance requirements (see note 1) (see note 2) Sub-group A1 ND S-4 2,5% 4.4.1 Visual examination As in4.4.1 Marking legible and as specified in1.4 of this specification Sub-group A2A ND II 1,0% 4.4.2
43、 Dimensions (gauging) As specified in Table 1 of this specification Sub-group A2B ND II 0,1% 4.5 Resistance Within specified tolerance Sub-group B1 ND S-3 1,0% 4.7 Voltage proof (insulated resistors only) Method: . No breakdown or flashover Sub-group B2A ND S-3 2,5% 4.17 Solderability (ifapplicable,
44、 seenote4) Without ageing Method: . Good tinning as evidenced by free flowing of the solder, or solder shall flow within. s, as applicable. Sub-group B2B ND S-3 2,5% 4.16 Robustness of terminations Tensile test Visual examination No visible damage Resistance % Rk (.%R +. 7)EN 140211:1994 10 BSI 01-2
45、000 Table 3a Lot-by-Lot inspection (groups A and B) Clause number and test (seenote 1) D or ND Conditions of test IL AQL Performance requirements (see note 1) (see note 2) Sub-group B2C ND S-3 2,5% Method: . 4.13 Overload Visual examination No visible damage Resistance % Rk (. %R +7) Sub-group B3 ND
46、 S-3 2,5% 4.8.4.2 Temperature coefficient of resistance This test is applicable only when a temperature coefficient of resistance of less than 50.10 6 / C is claimed. One cycle of20 C to70 C to20 C only. : . 10 6 / C NOTE 1Clause numbers of test and performance requirements refer to EN140000. NOTE 2
47、Inspection levels and acceptable quality levels are selected from IEC410: Sampling plans and procedures for inspection by attributes. NOTE 3: In this table: D = destructive; ND = non-destructive; IL = inspection level; AQL = acceptable quality level. NOTE 4Sub-group B2A is not applicable to resistor
48、s with screw terminations or to resistors designated in this specification as not intended to be soldered. Capacitors which may have been submitted to the tests of sub-groups B2A may be released provided they have not been submitted to ageing and are submitted to the tests of group A and pass those
49、tests. It is permitted to submit electrically defective resistors or detached terminations to this test provided they have been submitted to the same process treatments as a completed resistor.EN 140211:1994 BSI 01-2000 11 Table 3b Test schedule for capability qualifying components This table is used to construct the test schedule for CQC detail specifications. Using the subclauses of 3.12.4 of EN140210 the appropriate tests are selected from
