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1、BRITISH STANDARD BS 9753:1986 Incorporating Amendment No. 1 Sectional specification for variable r.f. type inductors of assessed quality for use in electronic equipment for capability approval UDC 621.318.43 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:31:
2、51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9753:1986 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 effect on 30 April 1986 BSI 01-2000 First published Decemb
3、er 1982 First revision April 1986 The following BSI references relate to the work on this standard: Committee reference ECL/18 Draft for comment 85/24631 DC ISBN 0 580 15108 5 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Electronic Co
4、mponents Standards Committee (ECL/-) to Technical Committee ECL/18 upon which the following bodies were represented: Electronic Components Industry Federation Engineering Equipment and Materials Users Association Ministry of Defence National Supervising Inspectorate Telecommunications Engineering an
5、d Manufacturing Association (TEMA) United Kingdom Atomic Energy Authority Amendments issued since publication Amd. No.Date of issueComments 5414July 1986Indicated by a sideline in the margin Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:31:51 GMT+00:00 2006
6、, Uncontrolled Copy, (c) BSI BS 9753:1986 BSI 01-2000i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2Related documents1 3Preparation of the detail specification1 4Inspection requirements to be listed in the detail specification2 5Detail specification2 Licensed Copy: Lond
7、on South Bank University, London South Bank University, Fri Dec 08 04:31:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9753:1986 ii BSI 01-2000 Foreword This revised British Standard has been prepared under the direction of the Electronic Components Standards Committee. It is intended to be used
8、for the preparation of detail specifications for variable r.f. type inductors released under the terms of the BS 9000/BS 9720 capability approval procedure. In this edition the format of the blank detail specification has been simplified and the recommended test schedule, modified, to accord with th
9、e experience gained in operating the procedure since the first edition, and clear guidance is given on the suitable test inspection levels. Changes brought about by the revision of BS 9720 are also incorporated where appropriate. This standard supersedes BS 9753:1982, which is withdrawn. It is inten
10、ded for use by the following originators. a) A customer wishing to procure variable r.f. type inductors that are within the scope of the approved capability of his supplying component manufacturer, e.g. for customers detail specifications (CDSs). b) A capability approved manufacturer of variable r.f
11、. type inductors wishing to prepare specifications for his own products which are within the scope of his capability approval. 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. Complian
12、ce with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 8 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorpor
13、ated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:31:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9753:1986 BSI 01-20001 1 Scope This British Standard specifies inspection requir
14、ements and tests from which a selection is made when preparing a detail specification for variable r.f. type inductors to be released under the terms of BS 9720 capability approval. It includes a blank detail specification (BDS), which shows the format, and indicates which tests are considered to be
15、 appropriate to this type of component; although the final selection of tests to be included in the inspection schedule is at the discretion of the specification writer. It also lists appropriate ratings and characteristics. NOTEQualification approved small fixed r.f. inductors may also be procured
16、in accordance with BS 9751. 2 Related documents BS 2011, Basic environmental testing procedures. BS 6001, Sampling procedures for inspection by attributes. BS 9000, General requirements for a system for electronic components of assessed quality. BS 9720, Specification for custom-built transformers a
17、nd inductors of assessed quality: generic data and methods of test. BS 9750, Specification for fixed r.f. inductors of assessed quality: generic data and methods of test. PD 9002, BS 9000, BS CECC and IECQ qualified products list. NOTEBS 6001, BS 9720 and BS 9750 should be available for reference wh
18、en preparing detail specifications. 3 Preparation of the detail specification 3.1 General A detail specification shall be prepared in accordance with 2.6.1 of BS 9720:1983. NOTE 1The detail specification should take the form of the BDS shown in clause 5, particularly in respect of the front cover fo
19、rmat and, in principle, in respect of the presentation of the inspection requirements. NOTE 2All the tests shown in the BDS are taken either from BS 9720 or from BS 9750. Those shown in bold type concern operating characteristics of fundamental importance and it is strongly recommended that these ar
20、e selected by the specification writer for inclusion in the detail specification. The tests shown in plain type are listed for the convenience of the specification writer, and tests should be selected from them according to the particular application of the component. NOTE 3Over-specification may ca
21、rry an economic penalty. However, the specification writer may specify tests and sampling levels different from, less than, or additional to those given in the BDS. 3.2 Particular requirements 3.2.1 Where additional tests of a type not defined or invoked in BS 9720 or BS 9750 are required, these sha
22、ll be fully specified in the detail specification. 3.2.2 Any tests considered as being destructive shall be so denoted in the test schedule by the addition of the notation “(D)”. NOTEThe use of this notation is not illustrated in the BDS. 3.2.3 Tests shall be grouped in the schedule according to the
23、 level of sampling required and, where indicated see 4.1 b), in the order of testing required. Where 100 % testing is not required, inspection levels and acceptable quality levels shall be selected from BS 6001. 3.2.4 The completed detail specification shall be allocated a component identity number
24、and issue status by the originator. NOTE 1This number is chosen by the originator (manufacturer or customer) within his own system. It is thus not subject to any external rules or codification. NOTE 2In the special case of a manufacturers detail specification for a standard catalogue item which the
25、manufacturer wishes to be listed in PD 9002, BSI will allocate an appropriate number in accordance with 15.11 of BS 9000-1:1981. 3.2.5 Additionally the detail specification shall include a number allocated by the component manufacturer comprising this specification number, his factory identification
26、 code letters and a unique number within his registration system, e.g. BS 9753/XYZ/1234. NOTEAfter a detail specification has been allocated the manufacturers reference number in accordance with 3.2.5, it is to be considered a contractual part of an order. Copies of all such detail specifications ar
27、e to be retained by the manufacturers chief inspector. 3.3 Ratings and characteristics 3.3.1 Ratings. In the case of customer originated detail specifications, customer and manufacturer agreement shall be obtained on the ratings to be ascribed to the component in the detail specification. These rati
28、ngs shall not exceed the scope of the manufacturers capability approval (see also 1.1.12 of BS 9720:1983). 3.3.2 Characteristics. A customer shall prescribe in the detail specification any characteristic required for a component. 3.4 Outline drawings and winding schematic diagram 3.4.1 The detail sp
29、ecification shall incorporate a drawing of the variable r.f. type inductor showing important features, such as those dimensions affecting interchangeability, orientation of adjuster, restrictions on mounting and marking requirements. 3.4.2 The detail specification shall incorporate a schematic diagr
30、am showing all windings, taps and phasings and giving termination identification. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:31:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9753:1986 2 BSI 01-2000 4 Inspection requirements to be listed in the detail
31、specification 4.1 Conformance inspection The detail specification shall incorporate the following notes. a) Sampling inspection is to be carried out in accordance with BS 6001, normal inspection. b) Tests in a group may be carried out in any order except where otherwise indicated (see 3.2.3). c) Com
32、ponents submitted to any tests marked (D) may not be released under BS 9720 capability approval (D = destructive). d) The values given for measurement limits are absolute values: measurement uncertainty is to be taken into account. 4.2 Design verification The tests to be detailed under this heading
33、are those which the specification writer considers to be inappropriate to lot-by-lot release, but appropriate to the verification of new and original designs. Accordingly, they are to be performed only when specifically so stated in the order, and the detail specification shall carry a statement to
34、this effect. If design verification is required, the number of specimens and that there shall be no failures shall be stated in the detail specification. NOTETwo specimens will normally be required. 5 Detail specification The BDS which follows, when completed in accordance with clause 3, forms the r
35、elevant detail specification. NOTEThe front cover of the BDS has been based upon the need for a customers detail specification. Where a manufacturers detail specification is required, some changes will be necessary, but the basic format should be retained. Licensed Copy: London South Bank University
36、, London South Bank University, Fri Dec 08 04:31:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9753:1986 BSI 01-20003 Blank detail specificationSheet 1 (of 6) Originators component identity number Specification available from:SPECIFICATION ISSUE STATUS DATE ELECTRONIC COMPONENTS OF ASSESSED QUALI
37、TY MANUFACTURERS REFERENCE NUMBERS SEE NOTES 1 AND 2 BELOWa DETAIL SPECIFICATION IN ACCORDANCE WITH BS 9753:1986 VARIABLE R.F. TYPE INDUCTOR BRIEF TECHNICAL DESCRIPTION For detail dimensions and schematic diagram see sheet 6 NOTE 1It may be possible to procure this component from any manufacturer ho
38、lding a current BS 9720 Capability Approval Certificate (listed in PD 9002) for such wound components defined herein, i.e. where this component falls within the manufacturers approved limits. NOTE 2Current Approved Manufacturers are:a ManufacturerCapability Approval No.Manufacturers Ref. No. BS 9753
39、/XYZ/1234 a The listing of manufacturers in a copy of this document issued by a potential customer is at the customers discretion. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:31:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9753:1986 4 BSI 01-2000 Blan
40、k detail specificationSheet 2 (of 6) Originators component identity number Variable r.f. type inductor to BS 9753:1986 RATINGS AND CHARACTERISTICS (see 3.3 of BS 9753:1986) ISSUE STATUS DATE Climatic category Operating temperature range Storage temperature range Mass Vibration (see BS 2011-2.1Fc) Bu
41、mp (see BS 2011-2.1Eb) Solderability (see BS 2011-2.1Ta) Robustness of terminations (see tests Ua, Ub, Uc or Ud of BS 2011-2.1U as appropriate) Maximum specified inductance Q at max. specified inductance Minimum specified inductance Q at min. specified inductance Operating frequency Self resonant fr
42、equency (at max. specified inductance) D.C. resistance of winding(s) Peak working voltage Power rating Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:31:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9753:1986 BSI 01-20005 Blank detail specificationSheet 3
43、 (of 6) Originators component identity number Variable r.f. type inductor to BS 9753:1986 Inspection requirements (see notes) ISSUE STATUS DATE TEST ILAQLBS 9720:1983 Reference BS 9750:1978 Reference Performance requirements and conditions of test DESIGN VERIFICATION ONLY: 2 specimens, no failures (
44、see 4.2 of BS 9753:1986) Design verification inspection comprises those tests listed below plus all those selected for conformance inspection. Design verification tests shall only be performed when specifically invoked by the relevant order. As requiredAs required As requiredAs required As requiredA
45、s required Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:31:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9753:1986 6 BSI 01-2000 Blank detail specificationSheet 4 (of 6) Originators component identity number Variable r.f. type inductor to BS 9753:1986IS
46、SUE STATUS Inspection requirements (see notes)DATE TESTILAQLBS 9720:1983 Reference BS 9750:1978 Reference Performance requirements and conditions of test TESTS ON COMPLETED COMPONENTS Visual inspection 100 %1.2.2 Dimensions100 %1.2.3 Inductance and Q at max. inductance 100 % 1.2.5.2 and 1.2.5.3 Indu
47、ctance and Q at min. inductance 100 % Voltage proof100 %1.2.4.4 D.C. winding resistance S41 %1.2.4.1.1 Self-resonant frequency at max. inductance S41 %1.2.5.4.1 or 1.2.5.4.2 Insulation resistance (standard atmosphere) S41 %1.2.4.2.1 Electrostatic screens S41 %1.2.4.8.1 Licensed Copy: London South Ba
48、nk University, London South Bank University, Fri Dec 08 04:31:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9753:1986 BSI 01-20007 Blank detail specificationSheet 5 (of 6) Originators component identity number Variable r.f. type inductor to BS 9753:1986ISSUE STATUS INSPECTION REQUIREMENTS (see no
49、tes)DATE TEST ILAQLBS 9720:1983 Reference BS 9750:1978 Reference Performance requirements and conditions of test TESTS ON COMPLETED COMPONENTS (continued) Magnetic shielding S42.5 %1.2.4.6.1 Degree of coupling S42.5 %1.2.5.10 Insert additional tests as required: NOTE 1Sampling inspection is to be carried out in accordance with BS 6001, normal inspection. NOTE 2Tests in a group may be carried out in any order except where otherwise indicated (see 3.2.3 of BS 9753:1986). NOTE 3Components submitted to any tests marked (D) may not be release
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