IEC 60068-2-20-ed.6.0

Detail information

Designation: IEC 60068-2-20-ed.6.0

Publication date: 30/03/2021

Pages: 42

Country: International technical standard

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Anotation

IEC 60068-2-20:2021 outlines Tests Ta and Tb, applicable to devices with leads and leads themselves. Soldering tests for surface mounting devices (SMD) are described in IEC 60068-2-58. This document provides procedures for determining the solderability and resistance to soldering heat of devices in applications using solder alloys, which are eutectic or near eutectic tin lead (Pb), or lead-free alloys. The procedures in this document include the solder bath method and soldering iron method. The objective of this document is to ensure that component lead or termination solderability meets the applicable solder joint requirements of IEC 61191-3 and IEC 61191-4. In addition, test methods are provided to ensure that the component body can be resistant to the heat load to which it is exposed during soldering. This edition includes the following significant technical changes with respect to the previous edition: - update of and clarification of pre-conditioning (former "aging") and its relation to natural aging. LIEC 60068-2-20:2021 decrit les essais Ta et Tb qui s’appliquent aux dispositifs a broches et aux broches elles-memes. Les essais de brasage des composants pour montage en surface (CMS) sont decrits dans l’IEC 60068-2-58. Le present document fournit des procedures pour determiner la brasabilite et la resistance a la chaleur de brasage des dispositifs dans les applications qui utilisent des alliages de brasure, qui sont soit des brasures etain plomb (Pb) eutectique ou quasi eutectique, soit des alliages de brasure sans plomb. Les procedures du present document incluent les methodes dites de bain de brasage et de fer a braser. Le but du present document est d’assurer que les broches des composants ou la brasabilite de leurs bornes sont en mesure de satisfaire aux exigences applicables aux joints de brasures de l’IEC 61191-3 et de l’IEC 61191-4. De plus, des methodes d’essai sont fournies pour assurer que le corps du composant peut resister a la charge calorifique a laquelle il est expose pendant le brasage. Cette edition inclut les modifications techniques majeures suivantes par rapport a ledition precedente: - mise a jour et clarification du preconditionnement (auparavant "vieillissement") et sa relation au vieillissement naturel.