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IEC 60068-2-82-ed.2.0
Environmental testing - Part 2-82: Tests - Test Xw1: Whisker test methods for components and parts used in electronic assemblies
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STANDARD published on 14.5.2019
The information about the standard:
Designation standards: IEC 60068-2-82-ed.2.0
Publication date standards: 14.5.2019
SKU: NS-950854
The number of pages: 68
Approximate weight : 204 g (0.45 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Annotation of standard text IEC 60068-2-82-ed.2.0 :
IEC 60068-2-82:2019 specifies tests for the whiskering propensity of surface finishes of electric or electronic components and mechanical parts such as punched/stamped parts (for example, jumpers, electrostatic discharge protection shields, mechanical fixations, press-fit pins and other mechanical parts used in electronic assemblies) representing the finished stage, with tin or tin-alloy finish. Changes of the physical dimensions of mould compounds, plastics and the like during the required test flow are not considered or assessed. The test methods have been developed by using a knowledge-based approach. This edition includes the following significant technical changes with respect to the previous edition: – extension of the scope of the test standard from electronic to electromechanic components and press-fit pins, which are used for assembly and interconnect technology; – significant reduction of the testing effort by a knowledge-based selection of test conditions i.e. tests not relevant for a given materials system can be omitted (see Annex D); – harmonization with JESD 201A by omission of severities M, N for temperature cycling tests; – highly reduced test duration (1 000 h instead of 4 000 h) for damp-heat test by introducing test condition at elevated humidity of 85 % R.H. and a temperature of 85 °C providing increased severity. LIEC 60068-2-82:2019 specifie des essais de verification de la propension au developpement des trichites pour les finis de surface des composants electriques ou electroniques et des pieces mecaniques comme les pieces embouties/estampees (par exemple cavaliers, ecrans de protection contre les decharges electrostatiques, fixations mecaniques, contacts inseres a force et autres pieces mecaniques utilisees dans les ensembles electroniques) qui representent la phase de finition, avec un fini en etain ou en alliage detain. Les modifications des dimensions physiques des composants moules, des plastiques et autres pendant le flux dessai exige ne sont pas prises en compte ni evaluees. Les methodes dessai ont ete mises au point en utilisant une approche fondee sur la connaissance. Cette edition inclut les modifications techniques majeures suivantes par rapport a ledition precedente: – extension du domaine dapplication de la norme dessai des composants electroniques aux composants electromecaniques et aux contacts inseres a force qui sont utilises pour la technologie dassemblage et dinterconnexion; – reduction significative de leffort dessai par une selection de conditions dessai fondee sur la connaissance, cest-a-dire que les essais non applicables a un systeme de materiaux donne peuvent etre omis (voir Annexe D); – harmonisation avec la JESD 201A par omission des severites M et N pour les essais de cycle thermique; – reduction considerable de la duree dessai (1 000 h au lieu de 4 000 h) pour lessai de chaleur humide par lintroduction dune condition dessai a humidite elevee de 85 % H.R. et dune temperature de 85 °C assurant une plus grande severite.
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