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1、BRITISH STANDARD BS EN 100014:1992 Incorporating Amendment No. 1 Harmonized system of quality assessment for electronic components Basic specification: CECC assessed process average procedure (60 % confidence limit) The European Standard EN 100014:1991 has the status of a British Standard Licensed C
2、opy: sheffieldun sheffieldun, na, Thu Oct 26 00:55:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 100014:1992 This British Standard, having been prepared under the direction of the Electronic Components Standards Committee, was published under the authority of the Board of BSI and comes into ef
3、fect on 29 February 1988 BSI 04-2000 The following BSI references relate to the work on this standard: Committee reference ECL/- Draft for comment Special announcement in BSI News November 1987 ISBN 0 580 16444 6 Committees responsible for this British Standard The preparation of this British Standa
4、rd was authorized by the Electronic Components Standards Committee (ECL/-) upon which the following bodies were represented: Association of Control Manufacturers TACMA (BEAMA Ltd.) British Telecommunications plc. Department of Trade and Industry (Electronics Applications Divisions) Electronic Compon
5、ents Industry Federation Electronic Engineering Association Institution of Electronic and Radio Engineers Ministry of Defence National Supervising Inspectorate Society of British Aerospace Companies Limited Telecommunication Engineering and Manufacturing Association (TEMA) Amendments issued since pu
6、blication Amd. No.Date of issueComments 7195October 1992Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 00:55:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 100014:1992 BSI 04-2000i Contents Page Committees responsibleInside front cover National fore
7、wordii Forewordiii Text of EN 1000141 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 00:55:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 100014:1992 ii BSI 04-2000 National foreword This British Standard has been prepared under the direction of
8、 the Electronic Components Standards Committee. It is identical with CENELEC Electronic Components Committee (CECC) 00014:1986 “Harmonized system of quality assessment for electronic components. Basic specification: CECC assessed process average procedure (60 % confidence limit)”. This standard is a
9、 harmonized specification within the CECC system. In 1991 the CENELEC Electronic Components Committee (CECC) accepted CECC 00014:1986 as European Standard EN 100014:1991. Details of the national implementation of CECC standards is given in BS 9000 “General requirements for a system for electronic co
10、mponents of assessed quality” Part 2 “Specification for national implementation of CECC basic rules and rules of procedure”. Terminology and conventions. The text of the CECC specification has been approved as suitable for publication as a British Standard without deviation. Some terminology and cer
11、tain conventions are not identical with those used in British Standards; attention is drawn especially to the following. The comma has been used as a decimal marker. In British Standards it is current practice to use a full point on the baseline as the decimal marker. The footnote to Table 1 refers
12、to MIL-STD-690. This standard is published by the United States Department of Defense and is entitled “Failure rate sampling plans and procedures”. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct
13、application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-references International StandardCorresponding British Standard CECC 00107-1:1982aBS 9000 General requirements for a system for electronic components of assessed quality Part 1:1981 Speci
14、fication of basic rules and procedures (Technically equivalent) a Referred to in the text as “RP 7-I”, which is the abbreviated title. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, page 2, the CECC title page, pages ii to iv, pages
15、1 to 4, an inside back cover 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. Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 00:55:13 GMT+00:00 2006, Uncont
16、rolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 100014 October 1991 UDC: Descriptors: Quality, electronic components, assessed process average procedure English version Basic Specification: CECC assessed process average procedure (60 % confidence limit) Spcification de Base
17、: Estimation CECC de la qualit moyenne (la limite de confiance 60 %) Grundspezifikation: CECC-besttigtes mittleres Fertigungsergebnis (60 % Vertrauensgrenze) This European Standard was approved by the CENELEC Electronic Components Committee (CECC) on 14 October 1991. The text of this standard consis
18、ts of the text of CECC 00014 Issue 1 1986 of the corresponding CECC Specification. 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
19、 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
20、 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
21、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
22、Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1991 Copyright reserved to CENELEC members Ref. No. EN 100014:1991 E Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 00:55:13 GMT+00:00 2006, Unc
23、ontrolled Copy, (c) BSI 2 blank Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 00:55:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 00:55:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 100014:1991 ii BSI 04-2000 Contents Page Foreword2
24、Preface2 1General1 2Procedure1 Table 1 Limit of accessibility of APA3 Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 00:55:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 100014:1991 BSI 04-2000iii Foreword The CENELEC Electronic Components Committee (CECC) is composed of those member count
25、ries 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 specifications and quality assessment pr
26、ocedures for electronic components, and by the grant of an internationally recognized Mark, or Certificate, of Conformity. The components produced under the System are thereby accepted by all member countries without further testing. At the date of printing of this specification, the member countrie
27、s of the CECC are Austria, Belgium, Denmark, Finland, France, Germany, Ireland, Italy, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Preface This Basic Specification was prepared by CECC WG “Assessment Techniques”. The text of this specification was circulated
28、 to the CECC for voting in the document indicated below and was ratified by the President of the CECC for printing as a CECC Specification. DocumentDate of VotingReport on the Voting CECC(Secretariat)1810December 1985CECC(Secretariat)1875 Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 00:55:
29、13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 00:55:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 100014:1991 BSI 04-20001 1 General 1.1 The procedure detailed hereafter is directed primarily at large scale production and is addition
30、al to what is prescribed in specifications. It is applicable, on a voluntary basis, when a manufacturer wishes, within the limits of a given level of confidence, to give information on the “assessed process average” of his production, concerning non-operative devices. 1.2 Non-operative devices are t
31、hose which are unusable. The relevant specification should give a precise definition. Structural similarity, as defined in the relevant generic specification, is applicable. 1.3 When a manufacturer uses this procedure, he may declare the results obtained either in the Certified Test Records (RCE) or
32、 in the Certificate of Conformity, if used, or in a separate document, provided that he refers to the “CECC assessed process average” and follows all the requirements of the procedure. 1.4 There is no need to include the provisions of this procedure in detail specifications, since the use of the pro
33、cedure is left to the manufacturers decision. However, the National Supervising Inspectorate (ONS) concerned shall be informed of the decision, and shall be entitled to inspect the evidence, as already applies to RCE. 2 Procedure 2.1 Results of inspection for non-operatives in every inspection lot,
34、including rejected lots but not resubmitted lots, are accumulated over a sufficient number of lots to enter the operating part of Table 1, with a minimum of three consecutive lots. The number of non-operative devices found is compared with that given in Table 1 for the accumulated sample size and th
35、e declared assessed process average. The initial Assessed Process Average (APA) can only be determined by the manufacturer after the completion of tests on at least three lots. 2.2 The manufacturer can declare the relevant assessed process average only when the accumulated number of non-operatives f
36、ound is no more than the maximum number given in Table 1 for the accumulated sample. Assessment then proceeds on a continuing basis with an increasing number of permitted non-operatives, based on the accumulated number of tested devices (“accumulated sample size” in Table 1). 2.3 A manufacturer may
37、always declare the lowest APA which is appropriate to the accumulated sample size and the accumulated number of non-operatives, provided that this total of non-operatives does not exceed 10. When the next non-operative(s) occur(s), bringing the total of non-operatives to 11 or more, the manufacturer
38、 shall discard all results preceding and including the earliest non-operative(s) the elimination of which will reduce the current total of non-operatives to 10 or less. He shall then determine the new APA value on the basis of the new total of non-operatives and accumulated sample size. If the APA d
39、eteriorates at any permitted number of non-operatives, the manufacturer shall declare a less severe APA (that is, to the left of the table), in accordance with the total of non-operatives and the accumulated sample size. 2.4 Each individual inspection lot shall be sampled on a continuing basis as sp
40、ecified in the detail specification for non-operative devices, but initially a larger size may be chosen by the manufacturer, who has to balance economic considerations against the time penalty if too small a sample is chosen. 2.5 It is necessary that the whole sample is tested, irrespective of the
41、results for the release of the lot. For instance, if the Acceptable Quality Level (AQL) specified for non-operatives in the relevant specification is 0,1 % and the inspection lot is greater than 10 000, with inspection level II this gives a sample of 500 with one defective allowed and rejection of t
42、he lot on two defectives; if two defectives are found after only part of the sample has been tested, the lot shall be rejected but all remaining specimens in the sample shall be tested so that the total number of non-operatives actually found in the sample is recorded in the accumulated total. 2.6 A
43、ll results shall be accumulated, with the exception of those from resubmitted lots (to avoid counting them twice) and from rogue lots. Rogue lots are defined as those where all of the following conditions apply: 1) The number of inoperatives in the lot makes it necessary to adjust the assessed proce
44、ss average by more than one column to the left in Table 1; and 2) a cause of rejection has been identified and appropriate corrective action has been taken; and 3) the production lot represented by the sample is rejected; and 4) the preceding 10 lots were all in conformity with the assessed process
45、average; and Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 00:55:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 100014:1991 2 BSI 04-2000 5) a register is maintained of all rogue lots. This register shall contain, as a minimum the results of the samples which have been excluded the cause
46、of rejection which has been determined the corrective action which has been taken. 2.7 Any non-operatives found during examination of the sample shall be retained for defect analysis. 2.8 Should the manufacturer fail to satisfy any requirements of Table 1, corrective action shall be taken and record
47、ed; release of lots may continue under the normal procedure of the detail specification, but no reference shall be made to the CECC assessed process average until the requirements of 2.1 are again fulfilled. 2.9 This procedure applies while a stable approval situation exists. Any modification which
48、is likely to bring the qualification approval into doubt will necessitate a suspension of the assessed process average procedure until a stable approval situation is reestablished for at least three consecutive lots (see RP 7-I 7.6). Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 00:55:13 GM
49、T+00:00 2006, Uncontrolled Copy, (c) BSI EN 100014:1991 BSI 04-20003 Table 1 Limit of accessibility of APA Accumulated sample size Maximum permitted number of non operatives for assessed process average APA 60 of . %/. 106 0,1500,1000,0650,0400,0250,0150,0100,00650,00400,00250,00150,0010 n U1 5001 0006504002501501006540251510 1 0000 1 50010 2 500210 3 0003210 3 5004210 4 2005310 5 0006421 0 5 50074210 6 00084210 6 50085310Insufficient number of results 7 00095310 7 50096310 8 000107421 0 9 00074210 10 00085310 11 20096310 12 500107420 14 0008421 0 16
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