1、BRITISH STANDARD BS EN 140201:1997 Harmonized system of quality assessment for electronic components Blank detail specification: Fixed power resistors (Assessment level S) The European Standard EN 140201:1996 has the status of a British Standard ICS 31.040.10BSEN140201:1997 This British Standard, ha
2、ving been prepared under the directionof the ElectrotechnicalSector Board,was published under theauthorityof the StandardsBoardand comes intoeffect on 15 September 1997 BSI 09-1999 ISBN 0 580 27788 7 National foreword This British Standard is the English language version of EN140201:1996 published b
3、y the European Electronic Components Committee (CECC) of the European Committee for Electrotechnical Standardization (CENELEC). It supersedes BSCECC40201:1981 which will be withdrawn on1998-02-15. The UK participation in its preparation was entrusted by Technical Committee EPL/40, Capacitors and res
4、istors for electronic equipment, to Subcommittee EPL/40/2, Resistors, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; m
5、onitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which l
6、ists normative references to international publications with their corresponding European publications. The BritishStandards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Ind
7、ex”, or using the “Find” facility of the BSI Standards Electronic Catalogue. 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 with a British Standard does not of itself conf
8、er immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 12 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated i
9、n the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBSEN140201:1997 BSI 09-1999 i Contents Page National foreword Inside front cover Foreword 2 Text of EN 140201 3ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 140201 November 1996
10、Supersedes CECC 40201:1981 Descriptors: Electronic components, fixed power resistors, blank detail specification, assessment level S English version Blank Detail Specification: Fixed power resistors (Assessment level S) Spcification particulire cadre: Rsistances fixes forte dissipation (Niveau dassu
11、rance de qualit S) Vordruck fr Bauartspezifikation: Hochbelastbare Festwiderstnde (Bewertungsstufe S) This European Standard was approved by CENELEC on1996-03-14. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Sta
12、ndard 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 Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, Fr
13、ench, 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 Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium
14、, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elekt
15、rotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1996 Copyright reserved to CENELEC members Ref. No. EN 140201:1996 EEN140201:1996 BSI 09-1999 2 Foreword This European Standard was prepared by the Technical Committee CENELEC TC/CECCSC40XB, Resistors (former CECC/WG4A) Th
16、e text of the draft based on document CECC(Secretariat)3481 was submitted to the formal vote; together with the voting report, circulated as document CECC(Secretariat)3680, it was approved as EN140201on1996-03-14. This European Standard supersedes CECC40201:1981. The following dates were fixed: Cont
17、ents Page Foreword 2 1 Ratings and characteristics 5 2 Marking 5 3 Related documents 5 4 Ordering information 5 5 Certified test records 6 6 Additional information 6 7 Inspection requirements 6 8 Assessed process average procedures 6 Table 1 Dimensions 4 Table 2 Inspection requirements 7 latest date
18、 by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1997-02-15 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 1998-02-15EN140201:1996 BSI 09-1999 3 Key for page 4 The numbers
19、 between square brackets on the first page correspond to the following indications which should be given: Identification of the harmonised detail specification 1 The name of the National Standards Organisation under whose authority the detail specification is drafted. 2 The CECC symbol and the numbe
20、r allotted to the national specification by the CECC General Secretariat. 3 The number and issue number of the national generic and sectional specification 4 The national number of the detail specification, date of issue and any further information required by the national system. Identification of
21、the resistor 5 A short description of the type of resistor. 6 Information typical construction (where applicable) e.g. wire wound insulated. 7 Outline drawing with main dimensions which are of importance for interchangeability and/or reference to the national or international documents for outlines.
22、 Alternatively, this drawing may be given in an appendix to the detail specification. 8 Application or group of applications covered, or, preferably, the level of quality assessment covered by the detail specification. 9 Reference data on the most important properties, to allow comparison between th
23、e various resistor types.EN140201:1996 4 BSI 09-1999 Specification available from: 1 CECC 40 201-XXX 2 4 ELECTRONIC COMPONENTS OF ASSESSED QUALITY IN ACCORDANCE WITH: 3 Outline and dimensions: (see Table 1) 7 5 FIXED POWER RESISTORS 6 ASSESSMENT LEVEL “S” 8 NOTE 1Other shapes are permitted within th
24、e dimensions given. NOTE 2These resistors are (not) suitable for printed wiring applications. Table 1 Dimensions 9 Style Rated dissipation (Wat 70 C) Limiting element voltage (V d.c. or a.c. rms.) Isolation voltage (V d.c. or a.c. peak) Maximum dimensions d L D min nom max All dimensions are in mill
25、imetres. See the relevant Qualified Products List for the availability of components qualified to this detail specification.EN140201:1996 BSI 09-1999 5 1 Ratings and characteristics 1.1 Derating Resistors covered by this specification are derated according to the curve: NOTEVarious parameter have be
26、en precisely specified for this component. It should not be assumed that any parameter not specified will remain unchanged from one component to another. Should, for any reason, it be necessary for further parameter(s) to be controlled, then a more detailed specification should be used. The addition
27、al test method(s) shall be fully described, and appropriate limits, AQLs and inspection levels specified. 2 Marking The marking of the component and package shall be in accordance with the requirements of2.4 of EN140000. 3 Related documents National Authorised Institutions will complete this section
28、, making reference to any documents, recommendations and specifications directly referred to in their national equivalent of this document. 4 Ordering information Orders for resistors covered by this specification shall contain the following information: Resistance value. a Resistance range . 7 to .
29、 7 Tolerances on rate resistance . % a The preferred values are those of the E series of IEC 63. Where the use of intermediate values is essential they should, wherever possible, be chosen from a series in that document. Climatic category . / . / . Vibration severity . Hz to . Hz; 0,75 mm or 98 m/s
30、2(whichever is the less severe) Low air pressure 8,5 kPa (85 mbar) Bump (or shock) severity . . Limit of resistance change after1000h endurance test (. % R + . 7) Temperature characteristic of resistance (20 C to 70 C) R: k . % R (%R/RT: k . 10 6 / C)EN140201:1996 6 BSI 09-1999 Tolerance. Style and
31、national specification number of this detail specification. 5 Certified test records The detailed specification shall indicate in this clause whether certified test records shall be prepared in accordance with 3.9 of EN140000. 6 Additional information (not for inspection purposes) The detail specifi
32、cation may include information (which is not required to be verified by the inspection procedure), such as circuit diagrams, curves, drawings and notes needed for the clarification of the detail specification. 7 Inspection requirements (see Table 2) 7.1 When drying m required, Procedure I of 4.3 of
33、EN140000 shall be used. 7.2 When the manufacturer desires to obtain qualification approval by adopting the fixed sample size procedure (see3.5.3 of EN140000) use shall be made of the test schedule in TableA.1/TableA.2 of annex A.1 or A.2 of EN140200. The conditions of the test and the performance re
34、quirements shall be identical to those prescribed for quality conformance inspection in the detail specification. 8 Assessed process average procedures When the Assessed Process Average Procedure as specified in CECC00014 is used, the detailed specification shall give the limits that are required in
35、 3.12 of EN140000. The detail specification shall prescribe at relevant places that non-operatives have to be recorded.EN140201:1996 BSI 09-1999 7 Table 2 Inspection requirements See notes on page 12 Clause number and test Conditions of test IL AQL Performance requirements Group A inspection To be c
36、onducted on a sampling basis, lot by lot Sub-group A1 Non-destructive S-4 1,0 % 4.4.1 Visual examination As in 4.4.1 4.4.1 Marking As in 4.4.1 Sub-group A2 Non-destructive S-4 1,0 % As specified in Table 1 4.4.2 Dimensions (gauging) 4.5 Resistance As in 4.5.2 Group B inspection To be conducted on a
37、sampling basis, lot by lot Sub-group B1 Non-destructive S-3 1,0 % 4.7 Voltage proof Insulated resistors only As in 4.7.3 Sub-group B2 Destructive S-3 4,0 % 4.17.1 Soldering-Solderability Method 1. The detail specification shall indicate whether the terminations are suitable for printed wiring S-3 4,
38、0 % As in 4.17 4.16 Robustness of terminations Tensile test Visual examination As in 4.16.6 Resistance R: k (. % R + . 7)EN140201:1996 8 BSI 09-1999 Table 2 Inspection requirements See notes on page 12 Clause number and test Conditions of test IL AQL Performance requirements 4.13 Overload Resistor s
39、tyle Load duration s S-3 4,0 % Applied voltage: . V The detail specification shall state, in accordance with 2.3.6 of EN 140200 the voltage to be applied Visual examination As in 4.13.3 Resistance R: k (. % R + . 7) Sub-group B3 Non-destructive S-3 2,5 % 4.8 Temperature characteristic of resistance
40、This test is applicable only where a temperature coefficient of less then 50 10 6 / C is claimed. One cycle of 20 C to 70 C to20 C only. R: k . % REN140201:1996 BSI 09-1999 9 Table 2 Inspection requirements See notes on page 12 Clause number and test Conditions of test Sample size and criterion of a
41、cceptability Performance requirements p n c Group C inspection To be conducted on a sampling basis, at the periodicity given in column “p” Sub-group C1 Destructive 3 20 1 Half of the sample 4.16 Robustness of terminations Tensile, bending and torsion tests Visual examination As in 4.16.6 Resistance
42、R: k (. % R + . 7) 4.18 Soldering Resistance to heat The detail specification shall state whether Method 1A or Method 1B of Test Tb of IEC 68-2-20 shall apply Visual examination As in 4.18.3 Resistance R: k (. % R + . 7) Other half of the sample 4.19 Rapid change of temperature T A : Lower category
43、temperature T B : Upper category temperature Visual examination As in 4.19.3 Resistance R: k (. % R + . 7) 4.20 Bump (See note 5) Acceleration: 390 m/s 2 No.of bumps: 4 000 (see note 4) Visual examination As in 4.20.4 Resistance R: k (. % R + . 7) 4.21 Shock (See note 5) Acceleration: 490 m/s 2 Puls
44、e duration: 11 ms Waveform : Half sineEN140201:1996 10 BSI 09-1999 Table 2 Inspection requirements See notes on page 12 Conditions of test Sample size and criterion of acceptability Performance requirements p n c Severity: 3 successive shocks to be applied in each sense of the three mutually perpend
45、icular directions specified in the detail specification (total 18 shocks) (see note 4) Visual examination As in 4.21.5 Resistance R: k (. % R + . 7) 4.22 Vibration Procedure: B4 Frequency range: . Hz to . Hz Amplitude: 0,75 mm or98m/s 2(whichever is the less severe) Sweep endurance: Total duration:6
46、th (see note 4) Visual examination As in 4.22.4 Resistance R: k ( . % R + . 7) All of the sample 4.23 Climatic sequence Dry heat Damp heat, cyclic, first cycle Cold Low air pressure 8,5 kPa (85 mbar) Damp heat, cyclic, remaining cycles Final measurements Visual examination As in 4.23.8 Resistance R:
47、 k ( . % R + . 7) Insulation resistance (Insulated resistors only) R: U 100 M7EN140201:1996 BSI 09-1999 11 Table 2 Inspection requirements See notes on page 12 Clause number and test Conditions of test Sample size and criterion of acceptability Performance requirements p n c Sub-group C2 Destructive
48、 3 20 1 4.25.2 Endurance at room temperature Duration: 1000 h Examination at 1000 h 4.25.2.6 Visual examination As in 4.25.2.6 Resistance R: k ( . % R + . 7) Insulation resistance (Insulated resistors only) R: U 1 G7 Sub-group C3 Non-destructive 3 20 1 LCT/20 20/UCT 4.8 Temperature characteristics o
49、f resistance %R: k . % R . % R Group D inspection To be conducted on a sampling basis at the periodicity given in column “p” Sub-group D1 Destructive 12 20 1 Visual examination As in 4.24.4 4.24 Damp heat, steady state Resistance R: k (. % R + . 7) Insulation resistance (Insulated resistors only) R: U 100 M7 Sub-group D2 Non-destructive 36 13 1 4.14 Temperature rise If the maximum and minimum dimensions and the
