1、BRITISH STANDARDBS EN 140100:2008Sectional Specification: Fixed low power film resistorsICS 31.040.10g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g5
2、8BS EN 140100:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2008 BSI 2008ISBN 978 0 580 57664 5National forewordThis British Standard is the UK implementation of EN 140100:2008. It supersedes BS EN 140100:1997 which is withdraw
3、n.The UK participation in its preparation was entrusted to Technical Committee EPL/40X, Capacitors and resistors for electronic equipment.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary p
4、rovisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publicationDate CommentsEUROPEAN STANDARD EN 140100 NORME EUROPENNE EUROPISCHE NORM February 2008 CENELEC Eu
5、ropean Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide
6、for CENELEC members. Ref. No. EN 140100:2008 E ICS 31.040.10 Supersedes EN 140100:1996 + A1:2001English version Sectional Specification: Fixed low power film resistors Spcification intermdiaire: Rsistances couche fixes faible dissipation Rahmenspezifikation: Schicht-Festwiderstnde niedriger Belastba
7、rkeit This European Standard was approved by CENELEC on 2007-10-01. CENELEC members are bound to comply with the 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 bibliograp
8、hical references concerning such national standards may be obtained on application to the Central Secretariat 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 the responsibility of
9、a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hun
10、gary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 140100:2008 2 Foreword This European Standard was prepared by the Technical Committee CENELEC TC 40XB, Re
11、sistors. The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 140100 on 2007-10-01. This European Standard supersedes EN 140100:1996 + A1:2001. Compared to the superseded standard, the following changes have been implemented: modification of the ti
12、tle; introduction of a test on the resistance to electrostatic discharge; introduction of description and test methods for lead-free soldering; introduction of the code letters for temperature coefficient as given in EN 60062; adoption of the IECQ rules of procedure, QC 001002-3; editorial revision.
13、 The preceding document on the subject covered by this specification has been CECC 40 100:1980. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2008-10-01 latest date by which
14、 the national standards conflicting with the EN have to be withdrawn (dow) 2010-10-01 _ BS EN 140100:2008 3 EN 140100:2008 Table of contents 1 General.4 1.1 Scope .4 1.2 Information to be specified in the detail specification.4 2 Preferred characteristics, ratings and severities for environmental an
15、d overload tests5 2.1 Preferred characteristics 5 2.1.1 Style and dimensions 5 2.1.2 Preferred climatic categories.6 2.1.3 Temperature coefficients of resistance .6 2.1.4 Limits of change of resistance.7 2.2 Preferred values of ratings .9 2.2.1 Rated resistance .9 2.2.2 Tolerances on rated resistanc
16、e.9 2.2.3 Rated dissipation (in the mounted state).9 2.2.4 Limiting element voltage .9 2.2.5 Insulation resistance (insulated styles only)9 2.2.6 Insulation voltage (insulated styles only).9 2.2.7 Combinations of tolerance on rated resistance and temperature coefficient9 2.3 Preferred test severitie
17、s .10 2.3.1 Damp heat, steady state .10 2.3.2 Vibration 10 2.3.3 Low air pressure10 2.3.4 Rapid change of temperature10 2.3.5 Solderability.10 2.3.6 Resistance to soldering heat.11 2.3.7 Overload11 2.3.8 Single pulse high voltage overload .12 2.3.9 Periodic electric overload 12 2.3.10 Resistance to
18、electrostatic discharge12 2.3.11 Flammability 12 2.4 Preparation of specimen 12 2.4.1 Drying 12 2.4.2 Mounting of components on a test rack 12 2.4.3 Mounting of components on test boards.13 3 Quality assessment procedures.14 3.1 General.14 3.1.1 Structurally similar components 14 3.1.2 Formation of
19、inspection lots 14 3.2 Qualification approval on the basis of the fixed sample size procedure 14 3.3 Quality conformance inspection .15 3.4 Technology approval 15 3.5 Assessed process average procedures .15 3.6 Delayed delivery.15 Annex A (normative) Fixed sample size Qualification Approval and Qual
20、ity Conformance Inspection test schedule for fixed low power resistors 16 Annex B (informative) Letter symbols and abbreviations.25 Bibliography27 BS EN 140100:2008EN 140100:2008 4 1 General 1.1 Scope This sectional specification prescribes the preferred values for characteristics and ratings and al
21、so the inspection requirements for fixed film resistors of assessed quality. These resistors generally have wire terminations and are primarily intended to be mounted directly on to printed boards. It selects from the generic specification, EN 60115-1, the appropriate methods of test to be used in d
22、etail specifications derived from this specification. Associated with this specification are one or more blank detail specifications each referenced by an EN number. A blank detail specification which has been completed as specified in 1.2 of this specification forms a detail specification. Such det
23、ail specifications may be used for the grant of Qualification approval and for the performance of Quality conformance inspection in accordance with an established quality assessment system (e.g. the IECQ-CECC system). 1.2 Information to be specified in the detail specification Detail specifications
24、shall be derived from the relevant blank detail specification. Detail specifications shall not specify requirements inferior to those of the generic, sectional or blank detail specification. When more severe requirements are included, they shall be listed in a subclause of the detail specification a
25、nd indicated in the test schedules, for example by an asterisk. The following information shall be specified in each detail specification and the values quoted shall preferably be selected from those given in the appropriate clause of this document. a) Outline drawing There shall be an illustration
26、of the resistor as an aid to easy recognition and for comparison of the resistor with others. Dimensions and their associated tolerances, which affect interchangeability and mounting, shall be given in the detail specification. b) Style and dimensions See 2.1.1. The dimensions shall be given for the
27、 length and diameter of the body, using the provisions of IEC 60294, and for the diameter of the terminations. Where the configuration is other than cylindrical with axial terminations, the detail specification shall specify such dimensional information as will adequately describe the resistor. The
28、free termination length should be given for appropriate tape packing. The mass of the products may be given for information. c) Climatic category See 2.1.2. d) Limits of resistance change after testing See 2.1.4. e) Resistance range See 2.2.1. NOTE 1 When products approved to the detail specificatio
29、n may have different ranges, the following statement should be added: “The range of values available in each style is given in the register of approvals, available e.g. on the website www.iecq.org.“ f) Tolerances on rated resistance See 2.2.2. NOTE 2 When products approved to the detail specificatio
30、n may have different ranges, the following statement should be added: “The range of values available in each style is given in the register of approvals, available e.g. on the website www.iecq.org.“ g) Temperature coefficient of resistance See 2.1.3. For preferred combinations of temperature coeffic
31、ient and tolerance on rated resistance see 2.2.7. BS EN 140100:2008 5 EN 140100:2008 h) Rated dissipation at 70 C See 2.2.3. The mounting conditions are as described in 2.4.2. or 2.4.3 The detail specification shall state the maximum dissipation at temperatures other than 70 C, e.g. the derating, ei
32、ther in a diagram or in the form of a statement. The category dissipation shall be zero. All break points shall be verified by tests. i) Limiting element voltage See 2.2.4 and EN 60115-1, 2.2.16. j) Insulation voltage (insulated styles only) See 2.2.6 and EN 60115-1, 2.2.17. k) Insulation resistance
33、 (insulated styles only) See 2.2.5. l) Marking The resistor shall be marked with the rated resistance according to EN 60062, Clause 3, and as many of the remaining items listed in EN 60115-1, 2.4.1. All the required information shall be marked on the package. m) Ordering information The detail speci
34、fication shall specify that the following information is required as a minimum when ordering resistors: the number of the detail specification and style reference; the rated resistance according to EN 60062; the tolerance on rated resistance according to EN 60062; the temperature coefficient of resi
35、stance according to EN 60062. The detail specification may include additional information (which is not normally required to be verified by the inspection procedure), such as circuit diagrams, curves, drawings and notes needed for the clarification of the detail specification. 2 Preferred characteri
36、stics, ratings and severities for environmental and overload tests 2.1 Preferred characteristics The values given in detail specifications shall preferably be selected from the following: 2.1.1 Style and dimensions Figure 1 Outline and dimensions The preferred styles and dimensions are given in Tabl
37、e 1. BS EN 140100:2008EN 140100:2008 6 Table 1 Preferred styles for film resistors Style Dimensions Code Size aLength L mm Diameter D mm d b mm l c mm min. max. min. max. min. A 0204 3,0 4,0 1,3 1,9 0,4 / 0,5 21 B 0207 5,0 6,5 2,0 2,5 0,6 21 C 0411 7,5 10,7 3,0 4,0 0,6 / 0,7 21 D 0414 10,0 12,0 3,6
38、4,1 0,8 21 E 0617 13,0 16,5 4,7 6,1 0,8 21 aFor information only. bNominal diameter, permissible tolerance according to IEC 60301. cMinimum length applies to the free lead length in tape packing according to EN 60286-1 only. When protective coating is permitted to extend on the terminations, the per
39、missible excess length shall be given in the detail specification. 2.1.2 Preferred climatic categories The resistors covered by the document are classified into climatic categories according to the general rules given in EN 60068-1, Annex A. The lower and upper category temperature shall be chosen f
40、rom EN 60068-2-1 and EN 60068-2-2 respectively and should preferrably be selected from the lists below. The duration of the damp heat, steady state test shall be selected from the list below Lower Category Temperature (LCT): -55 C; -40 C and -10 C, Upper Category Temperature (UCT): +85 C; +125 C; +1
41、55 C; +175 C and +200 C, duration of damp heat, steady state test: 10 days; 21 days; 56 days. The severities for the climatic tests are ruled by the lower and upper category temperatures. 2.1.3 Temperature coefficients of resistance The limits of resistance change due to variation of temperature wit
42、hin the range of defined category temperatures are given in Table 2. BS EN 140100:2008 7 EN 140100:2008 Table 2 Temperature coefficients and permitted change of resistance Temperature coefficient Limit of resistance change R/R % ppm/K Code LCT / Reference temperatureC Reference temperature / UCT C a
43、b-55 / 20 -40 / 20 -10 / 20 20 / 85 20 / 125 20 / 155 20 / 175 20 / 200 1 000 W A 7,5 6,0 3,0 6,5 10,5 13,5 15,5 18,0 500 V 3,75 3,0 1,5 3,25 5,25 6,75 7,75 9,0 250 U A, V 1,875 1,5 0,75 1,625 2,625 3,375 3,875 4,5 100 S B, K 0,750 0,6 0,30 0,650 1,050 1,350 1,550 1,8 50 R C 0,375 0,3 0,15 0,325 0,5
44、25 0,675 0,775 0,9 25 Q D, E 0,188 0,15 0,075 0,163 0,263 0,338 0,388 0,45 15 P E, T 0,113 0,09 0,045 0,098 0,158 0,203 0,233 0,27 10 N 0,075 0,060 0,030 0,065 0,105 0,135 0,155 0,18 5 M 0,038 0,030 0,015 0,033 0,053 0,068 0,078 0,09 2 L 0,015 0,012 0,006 0,013 0,021 0,027 0,031 0,036 1 K 0,008 0,00
45、6 0,003 0,007 0,011 0,014 0,016 0,018 aCode letters according to EN 60062. bHistorical code letters used in CECC 40 101-xxx detail specifications, for information only. If measurements are required at additional temperatures, these shall be specified in the detail specification. If asymmetric temper
46、ature coefficients are required, the respective limits of resistance change shall be specified in the detail specification, with the code letter for the larger temperature coefficient value applied. 2.1.4 Limits of change of resistance Tables 3a and 3b list preferred limits for resistance change for
47、 all tests listed in the heading. To classify the performance of resistors, they will be assigned to stability classes as listed below. BS EN 140100:2008EN 140100:2008 8 Table 3a Limits for change of resistance at tests Limit of resistance change R EN 60115-1, 4.25.1 Endurance at 70 C Stability clas
48、s EN 60115-1, 4.23 Climatic sequence 4.24 Damp heat, steady state 4.25.3 Endurance at upper category temperature 1 000 h Extended, 8 000 h EN 60115-1, 4.13 Overload 4.16 Robustness of terminations 4.18 Resistance to soldering heat 4.19 Rapid change of temperature, 5 cycles 4.22 Vibration 10 (10 % R + 0,5 ) (10 % R + 0,5 ) (20 % R + 0,5 ) (2 % R + 0,1 ) 5 (5 % R + 0,1 ) (5 % R + 0,1 ) (10 % R + 0,1 ) (1 % R + 0,05 ) 2 (2 % R + 0,1 ) (2 % R + 0,1 ) (5 % R + 0,1 ) (0,5 % R + 0,05 ) 1 (1 % R + 0,05 ) (1 %
