{"id":5700,"date":"2022-07-29T11:14:09","date_gmt":"2022-07-29T09:14:09","guid":{"rendered":"https:\/\/ksg-pcb.com\/?p=5700"},"modified":"2025-02-18T08:35:17","modified_gmt":"2025-02-18T07:35:17","slug":"ksg-qualitaetslabor-test-de-changement-de-temperature","status":"publish","type":"post","link":"https:\/\/www.ksg-pcb.com\/fr\/ksg-qualitaetslabor-temperaturwechseltest\/","title":{"rendered":"5+1 questions sur le test de changement de temp\u00e9rature"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"5700\" class=\"elementor elementor-5700\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-58e0dde0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"58e0dde0\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5510add9\" data-id=\"5510add9\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-355c5297 elementor-widget elementor-widget-text-editor\" data-id=\"355c5297\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>La fiabilit\u00e9 des circuits imprim\u00e9s est influenc\u00e9e par de nombreux facteurs.\u00a0<span style=\"color: var( --e-global-color-primary );\">Dans les secteurs de l'automobile, de l'a\u00e9rospatiale et de l'industrie, la temp\u00e9rature ambiante des circuits imprim\u00e9s peut varier entre -40\u00b0 et +180\u00b0Celcius. Afin de pouvoir d\u00e9terminer la fiabilit\u00e9 des modules \u00e9lectroniques dans ces conditions, les circuits imprim\u00e9s peuvent \u00eatre soumis \u00e0 un test de changement de temp\u00e9rature - \u00e9galement appel\u00e9 test de choc thermique.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-34f9473 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"34f9473\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4a6f3fd\" data-id=\"4a6f3fd\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8bfa89e elementor-widget elementor-widget-image\" data-id=\"8bfa89e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"768\" height=\"536\" src=\"https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_umweltfaktoren-2-768x536.png\" class=\"attachment-medium_large size-medium_large wp-image-5795\" alt=\"Facteurs environnementaux du circuit imprim\u00e9 dans un graphique en forme de tarte\" srcset=\"https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_umweltfaktoren-2-768x536.png 768w, https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_umweltfaktoren-2-300x209.png 300w, https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_umweltfaktoren-2-1024x715.png 1024w, https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_umweltfaktoren-2-1536x1072.png 1536w, https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_umweltfaktoren-2.png 2000w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Outre la propret\u00e9 technique, les vibrations, la poussi\u00e8re ou l'humidit\u00e9, le froid et la chaleur jouent un r\u00f4le important.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-bb29e4f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"bb29e4f\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f6c6a38\" data-id=\"f6c6a38\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d4f0368 elementor-widget elementor-widget-text-editor\" data-id=\"d4f0368\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-style: inherit; font-weight: inherit; color: var( --e-global-color-primary );\">Sur le pcb-blog.com, nous r\u00e9pondons \u00e0 cinq questions fr\u00e9quemment pos\u00e9es sur notre m\u00e9thode de test et nous vous montrons comment r\u00e9duire l'influence des variations de temp\u00e9rature.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-10afb5d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"10afb5d\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4a2af71\" data-id=\"4a2af71\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5fde1ec elementor-widget elementor-widget-heading\" data-id=\"5fde1ec\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u00c0 quoi sert le test de changement de temp\u00e9rature ?\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3817141 elementor-widget elementor-widget-text-editor\" data-id=\"3817141\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Les appareils \u00e9lectroniques utilis\u00e9s dans les secteurs de l'automobile, de l'a\u00e9rospatiale ou encore de l'industrie doivent parfois r\u00e9sister \u00e0 de tr\u00e8s fortes variations de temp\u00e9rature.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ae46e21 elementor-widget elementor-widget-image\" data-id=\"ae46e21\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"768\" height=\"543\" src=\"https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_temperaturschwankungen-768x543.png\" class=\"attachment-medium_large size-medium_large wp-image-5786\" alt=\"Variations de temp\u00e9rature affectant le circuit imprim\u00e9 dans diff\u00e9rents secteurs, dans un diagramme \u00e0 barres\" srcset=\"https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_temperaturschwankungen-768x543.png 768w, https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_temperaturschwankungen-300x212.png 300w, https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_temperaturschwankungen-1024x724.png 1024w, https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_temperaturschwankungen-1536x1086.png 1536w, https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_temperaturschwankungen.png 2000w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Variations de temp\u00e9rature dans l'environnement des circuits imprim\u00e9s selon le secteur et le domaine d'utilisation<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e4ce3d4 elementor-widget elementor-widget-text-editor\" data-id=\"e4ce3d4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Pour les circuits imprim\u00e9s qui y sont int\u00e9gr\u00e9s, cela signifie qu'ils doivent conserver leurs propri\u00e9t\u00e9s fonctionnelles en tant que support de composants et syst\u00e8me de conducteurs \u00e9lectriques, m\u00eame sous contrainte thermique. Cela peut \u00eatre simul\u00e9 au moyen d'un test de changement de temp\u00e9rature, qui sert \u00e0 v\u00e9rifier le comportement de vieillissement des circuits imprim\u00e9s \u00e0 des temp\u00e9ratures changeant rapidement.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-377edab elementor-widget elementor-widget-heading\" data-id=\"377edab\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Qu'est-ce qui caract\u00e9rise un test de changement de temp\u00e9rature ?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d46ac74 elementor-widget elementor-widget-text-editor\" data-id=\"d46ac74\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Le test de changement de temp\u00e9rature est souvent effectu\u00e9 en fin de vie, c'est-\u00e0-dire qu'il se termine d\u00e8s que toutes les pi\u00e8ces test\u00e9es sont tomb\u00e9es en panne. Ensuite, les donn\u00e9es obtenues sont g\u00e9n\u00e9ralement soumises \u00e0 une analyse de d\u00e9faillance de Weibull et \u00e9valu\u00e9es sur la base des param\u00e8tres caract\u00e9ristiques que sont la dur\u00e9e de vie, le facteur de forme et le temps sans d\u00e9faillance. Si l'on veut v\u00e9rifier qu'un crit\u00e8re de d\u00e9faillance donn\u00e9 est respect\u00e9, on parle de \"Success Run\". Cela signifie que toutes les pi\u00e8ces test\u00e9es ne doivent pas tomber en panne avant d'avoir atteint une limite temporelle.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1fa53a0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1fa53a0\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-57355c7\" data-id=\"57355c7\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3416b7c elementor-widget elementor-widget-heading\" data-id=\"3416b7c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Comment se d\u00e9roule un test de changement de temp\u00e9rature ?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0bbac0e elementor-widget elementor-widget-text-editor\" data-id=\"0bbac0e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Lors des tests de changement de temp\u00e9rature r\u00e9alis\u00e9s par le groupe KSG, les \u00e9chantillons sont install\u00e9s dans un panier d'essai qui est d\u00e9plac\u00e9 de mani\u00e8re cyclique dans une chambre froide et une chambre chaude.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f8936e1 elementor-widget elementor-widget-image\" data-id=\"f8936e1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"768\" height=\"543\" src=\"https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_simulation-768x543.png\" class=\"attachment-medium_large size-medium_large wp-image-5784\" alt=\"Armoire \u00e0 temp\u00e9rature variable dans le laboratoire de qualit\u00e9 KSG avec chambre chaude et froide\" srcset=\"https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_simulation-768x543.png 768w, https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_simulation-300x212.png 300w, https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_simulation-1024x724.png 1024w, https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_simulation-1536x1086.png 1536w, https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_simulation.png 2000w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e479b08 elementor-widget elementor-widget-text-editor\" data-id=\"e479b08\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Les conditions typiques de mise en \u0153uvre sont les suivantes :<\/p><ul><li><span style=\"font-style: inherit; font-weight: inherit; color: var( --e-global-color-primary );\">chambre froide : -40\u00b0C<\/span><\/li><li>chambre chaude : +125\u00b0C<\/li><li>Temp\u00e9rature par chambre : 25 min<\/li><li>temps de changement entre les chambres : &lt; 30 s<\/li><li>Nombre de cycles : 1.000<\/li><\/ul><p>Pour les circuits r\u00e9els, l'\u00e9valuation des tests peut se faire visuellement ou au moyen d'un contr\u00f4le par rectification. L'utilisation du test de r\u00e9sistance est beaucoup plus efficace. Pour cela, il est n\u00e9cessaire d'\u00e9tablir des mises en page de test appropri\u00e9es et de d\u00e9finir des crit\u00e8res de d\u00e9faillance ad\u00e9quats.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e9e072f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e9e072f\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d0a97e9\" data-id=\"d0a97e9\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-06c1c05 elementor-widget elementor-widget-heading\" data-id=\"06c1c05\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Quels types de d\u00e9fauts sont contr\u00f4l\u00e9s au moyen du test de changement de temp\u00e9rature ?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4dbedd9 elementor-widget elementor-widget-text-editor\" data-id=\"4dbedd9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Lors du test de changement de temp\u00e9rature, l'accent est mis sur les types de d\u00e9fauts suivants :<\/p><ul><li>Formation de fissures dans le manchon de cuivre des trous d\u00e9bouchants et des grands trous borgnes<\/li><li>D\u00e9molition des liaisons des couches internes des trous traversants et borgnes<ul style=\"list-style-type: square;\"><li>D\u00e9faillance de la connexion de la couche interne des vias LASER sur le pad cible<\/li><li>Fissuration des masques de soudure\u00a0\u00a0<\/li><li>D\u00e9laminage des structures composites<\/li><\/ul><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bdc7b23 elementor-widget elementor-widget-heading\" data-id=\"bdc7b23\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Quelle est la principale cause de d\u00e9faillance des circuits imprim\u00e9s lors d'un test de changement de temp\u00e9rature ?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-25e3ec8 elementor-widget elementor-widget-text-editor\" data-id=\"25e3ec8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Un circuit imprim\u00e9 est g\u00e9n\u00e9ralement compos\u00e9 de cuivre, de r\u00e9sine \u00e9poxy et de mats de fibres de verre - des mat\u00e9riaux qui se distinguent les uns des autres par leurs propri\u00e9t\u00e9s, telles que la r\u00e9sistance et le coefficient de dilatation thermique. Cela signifie qu'une augmentation de la temp\u00e9rature entra\u00eene des dilatations diff\u00e9rentes des mat\u00e9riaux, ce qui cr\u00e9e des champs de tension non homog\u00e8nes. Ceux-ci peuvent \u00e0 leur tour provoquer des augmentations locales des contraintes et donc la formation de fissures. Si ces fissures se propagent, cela entra\u00eene des interruptions \u00e9lectriques et donc la d\u00e9faillance du circuit imprim\u00e9.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-001ebf7 elementor-widget elementor-widget-heading\" data-id=\"001ebf7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Comment obtenir une r\u00e9sistance \u00e9lev\u00e9e aux chocs thermiques pour les circuits imprim\u00e9s ?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e8d0d03 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e8d0d03\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-1867b3a\" data-id=\"1867b3a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-72112e7 elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"72112e7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<i aria-hidden=\"true\" class=\"fas fa-info-circle\"><\/i>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9d6967d elementor-widget elementor-widget-text-editor\" data-id=\"9d6967d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Pour obtenir une r\u00e9sistance \u00e9lev\u00e9e aux chocs thermiques sur les circuits imprim\u00e9s, il convient de tenir compte des principaux facteurs suivants :<\/p><ul><li>un faible pr\u00e9-vieillissement gr\u00e2ce \u00e0 un faible impact lors du stockage et de l'\u00e9quipement<\/li><li>une faible extension de l'assemblage des couches dans la direction z,<\/li><li>l'utilisation de mat\u00e9riaux de base ayant des coefficients de dilatation thermique aussi faibles que possible, surtout dans la direction z<\/li><li>une \u00e9paisseur \u00e9lev\u00e9e des manchons de cuivre dans les trous,<\/li><li>un diam\u00e8tre de per\u00e7age aussi grand que possible et une r\u00e9partition uniforme,<\/li><li>une grande qualit\u00e9 de fabrication de la structure du circuit imprim\u00e9.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-f21c480\" data-id=\"f21c480\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-28c6fa8 elementor-widget elementor-widget-image\" data-id=\"28c6fa8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"543\" src=\"https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_grafik-768x543.png\" class=\"attachment-medium_large size-medium_large wp-image-5782\" alt=\"Aper\u00e7u des principaux facteurs d&#039;influence sur la r\u00e9sistance aux chocs thermiques du circuit imprim\u00e9\" srcset=\"https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_grafik-768x543.png 768w, https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_grafik-300x212.png 300w, https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_grafik-1024x724.png 1024w, https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_grafik-1536x1086.png 1536w, https:\/\/www.ksg-pcb.com\/wp-content\/uploads\/2022\/07\/temperaturwechseltest_grafik.png 2000w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a998c8a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a998c8a\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4fc5eb2\" data-id=\"4fc5eb2\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-504827b elementor-widget elementor-widget-text-editor\" data-id=\"504827b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Vous avez d'autres questions ? Vous trouverez plus d'informations sur le test de changement de temp\u00e9rature dans notre s\u00e9minaire en ligne XPERTS\u00a0<span style=\"color: var( --e-global-color-primary );\">\"Tout d\u00e9pend de la stratification : Les circuits imprim\u00e9s dans le test de changement de temp\u00e9rature\" avec\u00a0<\/span><span style=\"font-style: inherit; font-weight: inherit; color: var( --e-global-color-primary );\">Dr. Swantje Fr\u00fchauf et Holger B\u00f6nitz. Pour acc\u00e9der \u00e0 la version \u00e0 la demande disponible \u00e0 tout moment, vous pouvez<a href=\"https:\/\/attendee.gotowebinar.com\/register\/7881997959722857996?source=Blog\"> <span style=\"text-decoration: underline;\">s'inscrire ici<\/span><\/a>.\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Pour que les circuits imprim\u00e9s fonctionnent de mani\u00e8re fiable m\u00eame en cas de fortes variations de temp\u00e9rature, ils sont soumis \u00e0 des tests intensifs au pr\u00e9alable. KSG explique comment.<\/p>","protected":false},"author":26,"featured_media":5766,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[221],"tags":[202,161,371],"class_list":["post-5700","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-endoberflaechen","tag-loetoberflaechen","tag-strombelastbarkeit"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>5+1 Fragen zum Temperaturwechseltest \u26af pcb-blog.com<\/title>\n<meta name=\"description\" content=\"Damit Leiterplatten bei Temperaturschwankungen zuverl\u00e4ssig arbeiten, testet KSG sie vorab intensiv. 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