BS-CECC-31401-1988.pdf
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1、BRITISH STANDARD BS CECC 31401:1988 Specification for Harmonized system of quality assessment for electronic components Blank detail specification Fixed ceramic dielectric capacitors, dielectric class 1, for electrical shock hazard protection Licensed Copy: London South Bank University, London South
2、 Bank University, Fri Dec 08 17:04:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS CECC 31401:1988 BSI 12-1999 ISBN 0 580 35547 0 Amendments issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 17:04:47 GMT+00:00 2006, U
3、ncontrolled Copy, (c) BSI BS CECC 31401:1988 BSI 12-1999i Contents Page National forewordii Forewordii 1General data1 2Inspection requirements2 Table 11 Table 2 Values of capacitance related to tolerances and case sizes1 Table 3 Other characteristics2 Table 4A Lot by lot inspection (Group A and B)3
4、Table 4B Periodic test4 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 17:04:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS CECC 31401:1988 ii BSI 12-1999 National foreword This British Standard has been prepared under the direction of the Electronic Componen
5、ts Standards Committee. It is identical with CENELEC Electronic Components Committee (CECC) 31401:1985 “Harmonized system of quality assessment for electronic components Blank detail specification Fixed ceramic dielectric capacitors, dielectric class 1, for electrical shock hazard protection”. This
6、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 as a British Standard without deviation. Some terminology and certain conventions are not identical with those used in British
7、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. Cross-references. The British Standard which implements CECC 00100 is BS 9000: “General requi
8、rements for a system for electronic components of assesses quality” Part 2:1983 “Specification for national implementation of CECC basic rules and rules of procedure”. Scope. This standard lists the ratings, characteristics and inspection requirements which shall be included as mandatory requirement
9、s in accordance with BS CECC 30100. Detail specification layout. In the event of conflict between the requirements of this specification and the provisions of BS 9000 the latter shall take precedence, except that the front page layout shall be in accordance with PD 9004:1986 BS 9000, CECC See 4.21.6
10、 of CECC 30000 Visual examination Capacitance Voltage proof No visible damage No breakdown or flashover No visible damage marking legible k 5 % of initial value in 4.7.1 or 4.8.1 As in 4.6 Notes: (1), (3), (4) and (6): See notes on page 2 %C C - Licensed Copy: London South Bank University, London So
11、uth Bank University, Fri Dec 08 17:04:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS CECC 31401:1988 6 BSI 12-1999 Table 4B Periodic tests Clause number and test (1) D or ND (3) Condition of test (1) P (3) n (3) c (3) Performance requirements (1) Sub-Group C2D6151 4.10 4.10.1 4.10.2 4.10.3 Damp he
12、at, steady state Initial measurements Test conditions Final measurements Visual examination Capacitance No voltage applied unless otherwise specified in detail specification. If voltage application is prescribed, apply UR to one half of the lot and no voltage to the other half Visual examination Cap
13、acitance Insulation resistance Voltage proof No visible damage k 5 % of initial value U 2 500 M7 after 1 min As in 4.6 Sub-Group C3D3201(4) 4.11 4.11.1 4.11.2 4.11.3 Endurance Initial measurements Test conditions Final measurements Visual examination Capacitance Insulator resistance u.c.t. Duration:
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