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IEC 60384-21-ed.4.0-CMV
Fixed capacitors for use in electronic equipment - Part 21: Sectional specification - Fixed surface mount multilayer capacitors of ceramic dielectric, Class 1
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NORM herausgegeben am 21.6.2024
Informationen über die Norm:
Bezeichnung normen: IEC 60384-21-ed.4.0-CMV
Ausgabedatum normen: 21.6.2024
SKU: NS-1188603
Zahl der Seiten: 147
Gewicht ca.: 472 g (1.04 Pfund)
Land: Internationale technische Norm
Kategorie: Technische Normen IEC
Kategorie - ähnliche Normen:
Die Annotation des Normtextes IEC 60384-21-ed.4.0-CMV :
IEC 60384-21:2024 CMV contains both the official standard and its commented version. The commented version provides you with a quick and easy way to compare all the changes between IEC 60384-21:2024 edition 4.0 and the previous IEC 60384-21:2019 edition 3.0. Furthermore, comments from IEC TC 40 experts are provided to explain the reasons of the most relevant changes, or to clarify any part of the content. IEC 60384-21:2024 is applicable to fixed unencapsulated surface mount multilayer capacitors of ceramic dielectric with a defined temperature coefficient (dielectric Class 1), intended for use in electronic equipment. These capacitors have metallized connecting pads or soldering strips and are intended to be mounted on printed boards, or directly onto substrates for hybrid circuits. Capacitors for electromagnetic interference suppression are not included but are covered by IEC 60384-14. The object of this document is to specify preferred ratings and characteristics and to select from IEC 60384-1:2021 the appropriate quality assessment procedures, tests and measuring methods and to give general performance requirements for this type of capacitor. Test severities and requirements specified in detail specifications referring to this sectional specification provide specific test severities and requirements of an equal or higher performance level. Further information on the conception of generic, sectional and detail specifications can be found in the Introduction of IEC 60384-1:2021. This edition includes the following significant technical changes with respect to the previous edition: a) the document has been completely restructured to comply with the ISO/IEC Directives, Part 2 and to make it more useable; tables, figures and references have been revised accordingly; Annex X contains all cross-references of changes in clause/subclause numbers; b) the terms have been replaced by the letter symbols in Table 3; c) code of temperature coefficient and tolerance of C0G, U2J have been added in Table 4, Table 6, Table 8, Table 9, Table 11, Table 13, Table 16 and Annex B; d) the requirement in 5.5.2(visual examination) has been repeated in 5.9.3, 5.10.5, 5.11.4, 5.11.4, 5.13.7, 5.14.5 and 5.15.5; e) the deflection D in the very robust designs has been added in 5.9.1; f) Annex B has been changed informative into normative; g) Clause C.5 (Test schedule for quality conformance inspection) has been newly added to withdraw the blank detail specification: IEC 60384-21-1.
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