BS-CECC-41100-1978.pdf
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1、BRITISH STANDARD BS CECC 41100:1978 Incorporating Amendment No. 1 Harmonized system of quality assessment for electronic components: Sectional specification: Lead screw actuated and rotary preset potentiometers UDC 621.316.82 Licensed Copy: London South Bank University, London South Bank University,
2、 Fri Dec 08 17:00:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS CECC 41100:1978 This British Standard, having been prepared under the direction of the Electronic Components Standards Committee, was published under the authority of the Executive Board on 29 December 1978 BSI 09-1999 The following
3、BSI references relate to the work on this standard: Committee reference ECL/4 Draft for comment 73/76379 DC ISBN 0 580 10479 6 Cooperating organizations The Electronic Components Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the follo
4、wing Government department and scientific and industrial organizations: British Electrical and Allied Manufacturers Association (BEAMA) Electricity Supply Industry in England and Wales Electronic Components Industry Federation* Institution of Electronic and Radio Engineers Ministry of Defence* Natio
5、nal Supervising Inspectorate* Post Office* Society of British Aerospace Companies Limited* Telecommunication Engineering and Manufacturing Association (TEMA) Trades Union Congress The organizations marked with an asterisk in the above list, together with the following, were directly represented on t
6、he committee entrusted with the preparation of this British Standard: Electrical Research Association Electronic Engineering Association Amendments issued since publication Amd. No.Date of issueComments 5512December 1987 Indicated by a sideline in the margin Licensed Copy: London South Bank Universi
7、ty, London South Bank University, Fri Dec 08 17:00:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS CECC 41100:1978 BSI 09-1999i Contents Page Cooperating organizationsInside front cover National forewordii Forewordiv Text of CECC 411001 Licensed Copy: London South Bank University, London South Bank
8、 University, Fri Dec 08 17:00:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS CECC 41100:1978 ii BSI 09-1999 National foreword This British Standard has been prepared under the direction of the Electronic Components Standards Committee. It is identical with CENELEC Electronic Components Committee (
9、CECC) 41100 “Sectional specification: Lead screw actuated and rotary preset potentiometers”, and Amendment No. 1 (1986). This standard is a harmonized specification within the CECC system. Terminology and conventions. The text of the CECC specification has been approved as suitable for publication,
10、without deviation, as a British Standard. Some terminology and certain conventions are not identical with those used in British Standards; attention is especially drawn to the following. The comma has been used throughout as a decimal marker. In British Standards it is current practice to use a full
11、 point on the baseline as the decimal marker. Cross-references. The British Standard harmonized with CECC 00100 is BS E9000 “General requirements for electronic components of assessed quality harmonized with the CENELEC Electronic Component Committee system”. For each of the following International
12、Standards referred to in the text there is a corresponding British Standard; these are as listed below: The reference to IEC 393-1, for which there is no equivalent British Standard, is for information purposes only. Scope. This standard lists the ratings, characteristics and inspection requirements
13、 which shall be included as mandatory requirements in accordance with BS CECC 41000. Detail specification layout. In the event of conflict between the requirements of this British Standard and the provisions of BS E9000 the latter shall take precedence except that the front page layout shall be in a
14、ccordance with the requirements of BS 9000 Circular Letter No. 15 dated August 1977. 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 its
15、elf confer immunity from legal obligations. International StandardCorresponding British Standard CECC 41000:1976BS CECC 41000:1977 Harmonized system of quality assessment for electronic components: Generic specification for potentiometers (Identical) IEC 68BS 2011 Basic environmental testing procedu
16、res (Identical) Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the CECC title page, pages ii to iv, pages 1 to 15 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in
17、the amendment table on the inside front cover. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 17:00:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 17:00:58 GMT+00:00 2006, Unco
18、ntrolled Copy, (c) BSI BS CECC 41100:1978 ii BSI 09-1999 Contents Page Forewordiv Section 1. Scope1 Section 2. Preferred characteristics, ratings and severities for environmental tests1 2.1Characteristics1 2.1.1Climatic severities1 2.1.2Temperature characteristics and temperature coefficients of res
19、istance1 2.1.3Limits for change in resistance, or output ratio3 2.1.4Limits for insulation resistance3 2.1.5Total mechanical travel3 2.1.6Limit for contact resistance3 2.2Ratings3 2.2.1Rated resistance3 2.2.2Tolerances on rated resistance3 2.2.3Rated dissipation3 2.2.4Limiting element voltage4 2.2.5
20、Isolation voltage4 2.3Severities for environmental tests4 2.3.1Drying4 2.3.2Vibration4 2.3.3Bump4 2.3.4Shock4 2.3.5Low air pressure5 2.3.6Change of temperature5 2.3.7Soldering5 2.4Derating curve5 2.5Information to be given in a detail specification6 2.5.1Style6 2.5.2Rated dissipation6 2.5.3Limiting
21、element voltage6 2.5.4Isolation voltage6 2.5.5Resistance law6 2.5.6Dimensions6 2.5.7Resistance range6 2.5.8Tolerances on rated resistance6 2.5.9Temperature characteristics of resistance6 2.5.10 Climatic category6 2.5.11 Vibration severity6 2.5.12 Bump severity6 2.5.13 Shock severity6 2.5.14 Low air
22、pressure severity6 2.5.15 Soldering6 2.5.16 Limits of resistance change after 1 000 h electrical endurance test7 2.5.17 Starting torque7 2.5.18 End-stop torque7 2.5.19 Total mechanical travel7 2.5.20 Limiting slider current7 Licensed Copy: London South Bank University, London South Bank University,
23、Fri Dec 08 17:00:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS CECC 41100:1978 BSI 09-1999iii Page 2.5.21 Terminal resistance and, where applicable, minimum effective resistance7 2.5.22 Derating curve7 2.5.23 Marking7 2.5.24 Ordering information7 2.5.25 Contact resistance7 2.5.26 Additional infor
24、mation7 Section 3. Inspection8 3.1Formation of inspection lots8 3.2Delayed delivery8 3.3Test methods8 3.4Qualification approval8 Table 1 Preferred temperature characteristics and coefficients of resistance2 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 17:00:5
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