IEC 60115-1 pdf download – Fixed resistors for use in electronic equipment – Part 1: Generic specification

IEC 60115-1 pdf download – Fixed resistors for use in electronic equipment – Part 1: Generic specification
1 General1.1scope
This part of lEC 60115 is applicable to fixed resistors for use in electronic equipment.
lt establishes standard terms, inspection procedures and methods of test for use in sectionaland detail specifications of electronic components for quality assessment or any other purpose.
1.2 Normative references
The following normative documents contain provisions which，through reference in this text,constitute provisions of this part of lEC 60115.For dated references,subsequent amendmentsto，or revisions of any of these publications do not apply. However，parties to agreementsbased on this part of iEC 60115 are encouraged to investigate the possibility of applying themost recent editions of the normative documents indicated below.For undated references, thelatest edition of the normative document referred to applies. Members of lEC and Iso maintainregisters of currently valid lnternational Standards.
NOTE ln the case of lEC 60068 standards, use the referenced edition.
IEC 60027 (all parts),Letter symbols to be used in electrical technologyIEC 60050 (all parts). International Electrotechnical Vocabulary (IEv)
IEC 60060-1:1989，High-voltage test techniques – Part 1: General definitions and testrequirements
IEC 60060-2:1994,High-voltage test techniques – Part 2: Measuring systems
IEC 6o062:1992，Marking codes for resistors and capacitors
Amendment 1 (1995)
IEC 60063:1963,Preferred number series for resistors and capacitorsAmendment 1 (1967)
Amendment 2 (1977)
IEC 60068-1:1988,Environmental testing – Part 1:General and guidanceAmendment 1 (1992)
IEC 60068-2-1:1990: Environmental testing – Part 2: Tests – Tests A: ColdAmendment 1 (1993)
Amendment 2 (1994)
IEC 60068-2-2:1974，Environmental testing – Part 2: Tests – Tests B: Dry heatAmendment 1 (1993)
Amendment 2 (1994)
IEC 60068-2-3:1969,Environmental testing – Part 2:Tests – Test Ca: Damp heat, steady stateAmendment 1 (1984)
2Technical data2.1Units and symbols
For the purposes of this part of lEC 60115, the following definitions apply. In addition,units,graphical symbols， letter symbols and terminology shall, whenever possible, be taken from thefollowing publications:
– IEC 60027;
-IEC 60050;- ISO 1000.
When further items are required they shall be derived in accordance with the principles of thedocuments listed above.
2.2Definitions
For the purposes of this part of lEC 60115, the following definitions apply.
2.2.1
type
group of components having similar design features, the similarity of whose manufacturingtechniques enables them to be grouped together either for qualification approval or for qualityconformance inspection; they are generally covered by a single detail specification
NOTE 1 Components described in several detail specifications, may, in some cases, be considered as belongingto the same type and may therefore be grouped for quality assessment purposes.
NOTE 2 Mounting accessories are ignored, provided they have no significant effect on the test results.NOTE 3 Ratings cover the combination of
– electrical ratings,
-sizes,
– environmental category.
The limits of the range of ratings are to be given in the detail specification.
2.2.2
style
subdivision of a type, generally based on dimensional factors; a style may include severalvariants, generally of a mechanical order
2.2.3
grade
term indicating additional general characteristics concerning the intended application，forexample long-life applications.
The term “grade” may be used only in combination with one or more words (for example, long-life grade) and not with a single letter or number.
The figures to be added after the term “grade” should be arabic numerals
2.2.4
family (of electronic components)
group of electronic components which predominantly displays a particular physical attributeand/or fulfils a defined function
2.2.5
subfamily (of electronic components)
group of components within a family manufactured by similar technological methods