IEC 60539-1-ed.4.0

Annotation of standard text IEC 60539-1-ed.4.0 :

IEC 60539-1:2022 is applicable to directly heated negative temperature coefficient thermistors, typically made from transition metal oxide materials with semiconducting properties. It establishes standard terms, inspection procedures and methods of test for use in sectional and detail specifications of electronic components for quality assessment or any other purpose. This edition includes the following significant technical changes with respect to the previous edition:

1. Restructured completely to comply to ISO/IEC directives; categorization and reorganization of test methods into these categories;
2. Annex X added for comparison to the previous edition;
3. Some wordings, figures and references have been revised.

L’IEC 60539-1:2022 s’applique aux thermistances a coefficient de temperature negatif a chauffage direct, generalement constituees d’oxydes de metaux de transition presentant des proprietes semi-conductrices. Elle etablit des termes, des procedures d’inspection et des methodes d’essai normaux a utiliser dans les specifications intermediaires et particulieres des composants electroniques, pour l’assurance de la qualite ou pour tout autre usage. Cette edition inclut les modifications techniques majeures suivantes par rapport a l’edition precedente:

1. cette edition a ete entierement remaniee conformement aux Directives ISO/IEC; differentes categories ont ete definies et les methodes d’essai ont ete reorganisees en fonction de ces categories;
2. l’Annexe X a ete ajoutee a titre de comparaison par rapport a l’edition precedente;
3. certaines formulations, figures et references ont ete revisees.