1、BRITISH STANDARD BS CECC 42201:1988 Specification for Harmonized system of quality assessment for electronic components Blank detail specification Surge suppression varistorsBSCECC42201:1988 BSI 10-1999 ISBN 0 580 35655 8 A British Standard does not purport to include all the necessary provisions of
2、 a contract. Users of British Standards are responsible for their correct application. Compliance 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, the CECC title page, pag
3、e ii, pages 1 to 9 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. Amendments issued since publication Amd. No. Date CommentsBSCECC42201:1988 BSI 10-1999 i Content
4、s Page Foreword ii 1.1 Rating and characteristics 1 1.2 Derating 2 2 Marking 2 3 Related documents 2 4 Ordering information 2 5 Additional information (not for inspection purposes) 3 6 Certified test records 3 7 Inspection requirements 3 Table 1 2ii blankBSCECC42201:1988 ii BSI 10-1999 Foreword The
5、CENELEC Electronic Components Committee (CECC) is composed of those member countries 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 internat
6、ional trade by the harmonization of the specifications and quality assessment procedures 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 furt
7、her testing. This specification has been formally approved by the CECC and has been prepared for those countries taking part in the System who wish to issue detail specifications for SURGE SUPPRESSION VARISTORS. It should be read in conjunction with the current regulations for the CECC System. At th
8、e date of printing of this specification the member countries of the CECC are Austria, Belgium, Denmark, Finland, France, Germany, Ireland, Italy, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom and copies of it can be obtained from the addresses shown on the blu
9、e fly sheet. Preface This blank detail specification was prepared by CECC Working Group4: “RESISTORS”. It is one of a series of blank detail specifications for surge suppression varistors, all relating to the generic specification printed asCECC42000 and the sectional specification printed as CECC42
10、200. The text of this specification was circulated to the CECC for voting in the documents listed below and was ratified by the President of the CECC for printing as a CECC specification: See also report on the voting, CECC (Secretariat)1344, on documents CECC(Secretariat)1227,1228and1229. Document
11、Voting Date Report on the Voting CECC (Secretariat) 1096 7 December 1981 CECC (Secretariat) 1241 CECC (Secretariat) 1097 7 December 1981 CECC (Secretariat) 1240BSCECC42201:1988 BSI 10-1999 1 Key for page1 The numbers between square brackets on page 1 correspond to the following indications which sho
12、uld be given: Identification of the harmonized detail specification 1 The name of the National Standards Organization under whose authority the detail specification is drafted. 2 The CECC symbol and the number allocated to the national detail specification by the CECC General Secretariat. 3 The numb
13、er and issue number of the national generic and sectional specifications. 4 The national number of the detail specification, date of issue and any further information required by the national system. Identification of the varistor 5 A short description of the type of varistor. 6 Information on typic
14、al construction (where applicable) e.g.Zinc oxide, non-insulated. 7 Outline drawing with main dimensions which are of importance for interchangeability and/or reference to the national or international documents for outlines. Alternatively, this drawing may be given in an annex to the detail specifi
15、cation. 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 the various varistor types. 1.1 Ratings and characteristics (at25 C) Specificati
16、on available from: 1 CECC 42201: 2 ELECTRONIC COMPONENTS OF ASSESSED QUALITYIN ACCORDANCE WITH: 3 4 Outline and dimensions: (First angle projection) 7 SURGE SUPPRESSION VARISTORS 5 NOTEA fully dimensioned drawing shall be given in the detail specification. Construction e.g. Zinc oxide (non-insulated
17、) 6 Assessment level S 8 All dimensions in millimetres NOTE 1Other shapes are permitted within the dimensions given. NOTE 2The undimensioned details do not affect the performance of the device. NOTE 3The terminations are (not) suitable for soldering. NOTE 4The terminations are (not) suitable for pri
18、nted wiring applications. NOTE 5The terminations are (not) rigid. 9 Supply voltage V Maximum continuous a.c. voltage V a.c.r.m.s. Maximum continuous d.c. voltage V d.c. Class current A and/or Surge rating J Voltage at class current (protection level) V max.BSCECC42201:1988 2 BSI 10-1999 Table 1 1.2
19、Derating The detail specification shall give derating curves for the effect of temperature on the maximum continuous a.c. or d.c. voltage and for peak current against pulse duration. The latter curve may, if applicable, show the effect with respect to one or more pulses. 2 Marking The marking of the
20、 component and package shall be in the following order with the remainder in accordance with the requirements of2.4 ofCECC42000. a) Supply voltage (colour coding may be used). b) Detail specification number and style reference. c) Date of acceptance. d) The manufacturers name or trade mark. NOTEa) i
21、s mandatory, b) and the remainder to be added where space permits. 3 Related documents National Authorized Institutions shall complete this section, making reference to any documents, recommendations or specifications directly referred to in their national equivalent of this document. 4 Ordering inf
22、ormation Orders for varistors covered by this specification shall contain the following information: a) Detail specification number b) Style reference Leakage current 4 A max. Climatic category / / Information about manufacturers who have components qualified to this detail specification is availabl
23、e in the current CECC00200: Qualified Products List. Temperature coefficient of voltage (at1mA unless otherwise specifiedin the detail specification) %/K Capacitance (if applicable) pF max. Isolation voltage (if applicable) V Rated dissipation (if applicable) W (Where several styles are specified th
24、e above information shall preferably be presented in tabular form) e.g. Style reference Dimensions (in mm) Supply voltage Max. cont. a.c. volt. Max. cont. d.c. volt. Protection level Leakage current Class current Surge rating Isolation voltage Rated dissipation D W min. max. min. max. V V a.c. r.m.s
25、. V d.c. V max. 4A max. A J V WBSCECC42201:1988 BSI 10-1999 3 5 Additional information (not for inspection purposes) Maximum current to achieve10000 pulses of8/204s at6 pulses per minute. (This information may be given in graphical form). Maximum energy to achieve10000 pulses of10/10004s, or2ms squa
26、re wave, at1 pulse per min. (This information may be given in graphical form). The detail specification may include information which is not required to be verified by the inspection procedure, such as circuit diagrams, curves, drawings or notes needed for the clarification of the detail specificati
27、on. 6 Certified test records The detail specification shall specify in this paragraph whether certified test records shall be prepared in accordance with3.5 ofCECC42000. 7 Inspection requirements When it is desired to obtain qualification approval by adopting the fixed sample size procedure, (see3.3
28、.3 ofCECC42000), use shall be made of the test schedule given for that purpose inCECC42200. The conditions of the test and the performance requirements shall be identical to those prescribed for quality conformance inspection in the detail specification. See notes 1, 2 and 3 Test and clause number D
29、 or ND Conditions of test IL AQL Performance requirements (1) (3) (1) (2) (2) (1) GROUP A INSPECTION To be conducted on a sampling basis lot-by-lot Sub-group A1 ND II 1,0 % 4.2.1 Visual examination As in 4.2.1 4.2.2 Marking As in 4.2.2 Sub-group A2 ND I 0,65 % C2.2 Voltage under pulse conditions 8/2
30、0 pulse class current (Protection level) u V 4.3 Voltage At 1 mA As specified in the detail specification 4.3 Current At maximum continuous d.c. voltage Leakage current (see note 4) As specified in the detail specification Sub-group A3 ND S2 4,0 % 4.2.3 Dimensions (gauging) Dimension “D” and such ot
31、her dimensions as may be specified in the detail specification As specified in the detail specification Notes on page 9BSCECC42201:1988 4 BSI 10-1999 See notes 1, 2 and 3 Test and clause number D or ND Conditions of test IL AQL Performance requirements (1) (3) (1) (2) (2) (1) GROUP B INSPECTION To b
32、e conducted on a sampling basis lot-by-lot Sub-group B1 D S3 2,5 % 4.11 Robustness of terminations Tests appropriate to the type of termination Visual examination As in 4.11.6 Leakage current Within the original limits 4.10.1 Soldering- solderability (where applicable, see note 5) Test Ta (IEC 68-2-
33、20 solder bath method 235 5 C The terminations shall be uniformly tinned Sub-group B2 ND S2 1 % 4.7 Voltage proof Insulated varistors only As in 4.7.3 Notes on page 9BSCECC42201:1988 BSI 10-1999 5 See notes 1 and 3 Test and clause number D or ND Conditions of test Sample size and criterion of accept
34、ability Performance requirements (1) (3) (1) (3) (1) p n c GROUP C INSPECTION To be conducted on a sampling basis at the periodicity given in column “p”. Sub-group C1 D 6 13 1 C2.1 Pulse current 100 pulses at 8/20 4s in the same direction at 2 pulses per min, at maximum peak current Visual examinati
35、on No visible damage Leakage current (see note 4) 2 the initial limits Sub-group C2 D 12 13 1 C2.1 Pulse current 100 pulses at 10/1 000 4s, or 2 ms square wave, in the same direction at 1 pulse every 2 mins Visual examination No visible damage Leakage current (see note 4) 2 the initial limits Sub-gr
36、oup C3 D 12 13 1 (i) Seven specimens 4.6 Capacitance (when specified) f = 1 kHz signal level: . . . . . .V As specified in thedetail specification (if not u 1 V) Zero bias Notes on page 9BSCECC42201:1988 6 BSI 10-1999 See notes 1 and 3 Test and clause number D or ND Conditions of test Sample size an
37、d criterion of acceptability Performance requirements (1) (3) (1) (3) (1) p n c 4.10.2 Soldering resistance to solder heat (whereapplicable see note 5) Test Tb (IEC 68-2-20) Method 1A Visual examination As in 4.10.2.4 Leakage current Within the initial limits 4.12 Rapid change of temperature T A : L
38、ower category temperature T B : Upper category temperature Visual examination As in 4.12.4 Leakage current Within the initial limits (ii) Remaining six specimens 4.14 Shock (see note 6) Pulse shape: half sine Acceleration: 490 m/s 2 Pulse duration: 11 ms (see note 7) 3 6 shocks Visual examination As
39、 in 4.14.3 Leakage current Within the initial limits or 4.13 Bump (see note 6) Number of bumps: 4000 Acceleration: 390 m/s 2 (see note 7) Visual examination As in 4.13.3 Leakage current Within the initial limits Notes on page 9BSCECC42201:1988 BSI 10-1999 7 See notes 1 and 3 Test and clause number D
40、 or ND Conditions of test Sample size and criterion of acceptability Performance requirements (1) (3) (1) (3) (1) p n c 4.15 Vibration Procedure: B4 Frequency range: 10 Hz to 55 Hz Amplitude: 0,75 mm or 98 m/s 2(whichever is the less sever) Total duration: 6 h (see note 7) Visual examination As in 4
41、.15.3 Leakage current Within the initial limits (iii) All specimens of the sample 4.16 Climatic sequence (Low air pressure test not applicable) Dry heat Damp heat, cyclic, (first cycle) Cold Damp heat, cyclic, (remaining cycles) Final measurements Visual examination As in 4.16.9.1 Leakage current 2
42、the initial limits Insulation resistance (Insulated varistors only) R: W 1 M7 Notes on page 9BSCECC42201:1988 8 BSI 10-1999 See notes 1 and 3 Test and clause number D or ND Conditions of test Sample size and criterion of acceptability Performance requirements (1) (3) (1) (3) (1) p n c Sub-group C4 D
43、 12 13 1 4.20 Electrical endurance at upper category temperature Applied voltage: maximum continuous a.c. or d.c. voltage (Taking account of derating) Visual examination As in 4.20.5.1 Leakage current (see note 4) 2 the initial limits Insulation resistance (Insulated varistors only) R: W 10 M7 GROUP
44、 D INSPECTION: To be conducted on a sampling basis at the periodicity given in column “p”. Sub-group D1 D 24 8 1 4.17 Damp heat steady state Four specimens No applied voltage Remaining four specimens Applied voltage: 10 % of the maximum continuous d.c. voltage Visual examination As in 4.17.3.1 Leaka
45、ge current (see note 4) 2 the initial limits Insulation resistance (Insulated varistors only) R: W 1 M7 Notes on page 9BSCECC42201:1988 BSI 10-1999 9 NOTE 1Clause numbers of tests and performance requirements refer to CECC42000. NOTE 2Inspection levels and AQLs are selected from IEC410. NOTE 4Where
46、d.c. has been applied to the varistor, the leakage current shall be measured in the same direction. NOTE 5Applicable only to varistors with wire terminations. NOTE 6The bump test and the shock test are considered to be alternatives. The detail specification shall indicate which test is to be perform
47、ed. NOTE 7The varistors shall be mounted by their normal means in such a manner that there shall be no parasitic vibration. See notes 1 and 3 Test and clause number D or ND Conditions of test Sample size and criterion of acceptability Performance requirements (1) (3) (1) (3) (1) p n c Sub-group D2 N
48、D 24 8 1 4.2 Dimensions (detail) As specified in the detail specification 4.5.1.1 Temperature coefficient of current (if appropriate) At the maximum continuous d.c. voltage At the lower category temperature, + 25 C and at the upper category temperature LCT/25 25/UCT As specified in the detail specif
49、ication Sub-group D3 D 24 5 0 4.18.1 Flammability - needle flame test (IEC 695-2-2) Severity: As specified in the detail specification As specified in the detail specification Notes on page 9 NOTE 3In this table: p =periodicity (in months) n =sample size c =acceptance criterion LCT =lower category temperature UCT =upper category temperature D =destructive ND =non destructiveBS CECC 42201:1988 BSI 389 Chiswick High Road London W4 4AL BSIBritish
