{"id":2735,"date":"2025-05-21T08:28:00","date_gmt":"2025-05-21T00:28:00","guid":{"rendered":"https:\/\/www.topfastpcb.com\/?p=2735"},"modified":"2025-05-20T11:09:21","modified_gmt":"2025-05-20T03:09:21","slug":"surface-mount-technology","status":"publish","type":"post","link":"https:\/\/www.topfastpcb.com\/fr\/blog\/surface-mount-technology\/","title":{"rendered":"Technologie de montage en surface (SMT)"},"content":{"rendered":"<p>La technologie de montage en surface (SMT) repr\u00e9sente le c\u0153ur de l'assemblage \u00e9lectronique moderne, transformant les composants discrets traditionnels \u00e0 trous traversants en puces compactes sans plomb ou \u00e0 plomb court mont\u00e9es directement sur les surfaces des cartes de circuits imprim\u00e9s. Cette technologie permet d'assembler des produits \u00e9lectroniques \u00e0 haute densit\u00e9, tr\u00e8s fiables, miniaturis\u00e9s et rentables, tout en prenant en charge les processus de fabrication automatis\u00e9s.<\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_74 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table des mati\u00e8res<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/surface-mount-technology\/#Overview_of_Surface_Mount_Technology\" >Aper\u00e7u de la technologie de montage en surface<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/surface-mount-technology\/#Evolution_and_Technical_Background_of_SMT\" >\u00c9volution et contexte technique de la TMS<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/surface-mount-technology\/#Technological_Development_Context\" >Contexte du d\u00e9veloppement technologique<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/surface-mount-technology\/#Global_Development_History\" >Historique du d\u00e9veloppement mondial<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/surface-mount-technology\/#Current_Status_in_China\" >Situation actuelle en Chine<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/surface-mount-technology\/#Core_Advantages_of_SMT_Technology\" >Principaux avantages de la technologie SMT<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/surface-mount-technology\/#Key_Technological_Trends_in_SMT\" >Principales tendances technologiques dans le domaine du traitement de surface<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/surface-mount-technology\/#Component_Packaging_Innovations\" >Innovations en mati\u00e8re d'emballage des composants<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/surface-mount-technology\/#Production_Equipment_Advancements\" >Progr\u00e8s des \u00e9quipements de production<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/surface-mount-technology\/#Circuit_Board_Technology_Innovations\" >Innovations technologiques en mati\u00e8re de circuits imprim\u00e9s<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/surface-mount-technology\/#Core_Components_of_SMT_Processes\" >Composants essentiels des processus SMT<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/surface-mount-technology\/#Primary_Process_Types\" >Types de processus primaires<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/surface-mount-technology\/#Key_Production_Line_Processes\" >Processus cl\u00e9s de la cha\u00eene de production<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/surface-mount-technology\/#Three_Critical_Process_Details\" >Trois d\u00e9tails essentiels du processus<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/surface-mount-technology\/#Electrostatic_Discharge_ESD_Protection_Management\" >Gestion de la protection contre les d\u00e9charges \u00e9lectrostatiques (ESD)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/surface-mount-technology\/#ESD_Risks\" >Risques li\u00e9s \u00e0 l'ESD<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/surface-mount-technology\/#Protection_Measures\" >Mesures de protection<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/surface-mount-technology\/#SMT_three_core_process_technology_details\" >D\u00e9tails de la technologie des trois proc\u00e9d\u00e9s de base SMT<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/surface-mount-technology\/#1_Solder_Paste_Application_Process\" >1. Processus d'application de la p\u00e2te \u00e0 braser<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/surface-mount-technology\/#2_Component_Placement_Technology\" >2.Technologie de placement des composants<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/surface-mount-technology\/#3_Reflow_Soldering_Process\" >3.Processus de soudage par refusion<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Overview_of_Surface_Mount_Technology\"><\/span>Aper\u00e7u de la technologie de montage en surface<span class=\"ez-toc-section-end\"><\/span><\/h2><p>La technologie de montage en surface (SMT) a r\u00e9volutionn\u00e9 la fabrication \u00e9lectronique moderne en rempla\u00e7ant les composants encombrants \u00e0 trous traversants par des puces compactes et sans plomb qui se montent directement sur les cartes de circuits imprim\u00e9s.En tant que processus d'assemblage dominant de l'industrie, la technologie SMT permet la production automatis\u00e9e d'appareils \u00e9lectroniques miniaturis\u00e9s, ultra-fiables et \u00e0 haute densit\u00e9, \u00e0 des co\u00fbts r\u00e9duits. Cette technologie transformatrice est devenue omnipr\u00e9sente dans les syst\u00e8mes informatiques, les \u00e9quipements de communication et d'innombrables produits \u00e9lectroniques, et son adoption continue de s'\u00e9tendre \u00e0 mesure que l'utilisation des composants traditionnels \u00e0 travers le trou diminue. Les progr\u00e8s constants des processus et des composants SMT en ont fait l'\u00e9talon-or de l'assemblage \u00e9lectronique, stimulant l'innovation tout en r\u00e9pondant \u00e0 la demande croissante d'appareils \u00e9lectroniques plus petits, plus puissants et plus rentables dans tous les secteurs du march\u00e9.<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"402\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/SMT-3.jpg\" alt=\"SMT\" class=\"wp-image-2736\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/SMT-3.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/SMT-3-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/SMT-3-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Evolution_and_Technical_Background_of_SMT\"><\/span>\u00c9volution et contexte technique de la TMS<span class=\"ez-toc-section-end\"><\/span><\/h2><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Technological_Development_Context\"><\/span>Contexte du d\u00e9veloppement technologique<span class=\"ez-toc-section-end\"><\/span><\/h3><p>La tendance \u00e0 l'\u00e9lectronique intelligente, multim\u00e9dia et en r\u00e9seau a entra\u00een\u00e9 trois exigences fondamentales pour la technologie d'assemblage : haute densit\u00e9, haute vitesse et normalisation.Ces exigences ont entra\u00een\u00e9 le passage r\u00e9volutionnaire de la technologie traditionnelle du trou traversant (THT) \u00e0 la technologie du montage en surface.<\/p><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Global_Development_History\"><\/span>Historique du d\u00e9veloppement mondial<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Les SMT ont vu le jour dans les ann\u00e9es 1960 et sont pass\u00e9es par quatre phases cl\u00e9s :<\/p><ol class=\"wp-block-list\"><li><strong>Exploration initiale (ann\u00e9es 1970)<\/strong>: Principalement utilis\u00e9 dans les circuits int\u00e9gr\u00e9s hybrides et les produits de consommation tels que les montres \u00e9lectroniques et les calculatrices.<\/li>\n\n<li><strong>Croissance rapide (milieu des ann\u00e9es 1980)<\/strong>: Une maturit\u00e9 croissante et des applications \u00e9largies<\/li>\n\n<li><strong>Adoption g\u00e9n\u00e9ralis\u00e9e (ann\u00e9es 1990)<\/strong>: Devenue une technologie d'assemblage courante, elle remplace progressivement la technologie THT.<\/li>\n\n<li><strong>Innovation continue (21e si\u00e8cle-aujourd'hui)<\/strong>: Vers une plus grande densit\u00e9, une taille r\u00e9duite et de meilleures performances<\/li><\/ol><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Current_Status_in_China\"><\/span>Situation actuelle en Chine<span class=\"ez-toc-section-end\"><\/span><\/h3><p>La technologie SMT a \u00e9t\u00e9 introduite en Chine dans les ann\u00e9es 1980, d'abord pour la production de syntoniseurs de t\u00e9l\u00e9vision avant de s'\u00e9tendre \u00e0 l'\u00e9lectronique grand public comme les magn\u00e9toscopes et les appareils photo.Depuis 2000, avec le d\u00e9veloppement rapide de l'industrie de l'information \u00e9lectronique, les importations d'\u00e9quipements SMT ont consid\u00e9rablement augment\u00e9, faisant de la Chine la plus grande base de fabrication SMT au monde.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Core_Advantages_of_SMT_Technology\"><\/span>Principaux avantages de la technologie SMT<span class=\"ez-toc-section-end\"><\/span><\/h2><ol class=\"wp-block-list\"><li><strong>Assemblage haute densit\u00e9<\/strong>: R\u00e9duit le volume du produit de 60% et son poids de 75%.<\/li>\n\n<li><strong>Fiabilit\u00e9 exceptionnelle<\/strong>: Taux de d\u00e9fectuosit\u00e9 des joints de soudure inf\u00e9rieurs d'un ordre de grandeur \u00e0 ceux du THT, avec une r\u00e9sistance sup\u00e9rieure aux chocs.<\/li>\n\n<li><strong>Excellentes caract\u00e9ristiques \u00e0 haute fr\u00e9quence<\/strong>: Minimise la capacit\u00e9 et l'inductance parasites tout en r\u00e9duisant les interf\u00e9rences \u00e9lectromagn\u00e9tiques<\/li>\n\n<li><strong>Automatisation efficace<\/strong>: Simplifie les processus de production et am\u00e9liore l'efficacit\u00e9<\/li>\n\n<li><strong>Avantages significatifs en termes de co\u00fbts<\/strong>: R\u00e9duit les co\u00fbts totaux de production de 30 \u00e0 50<\/li><\/ol><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"402\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/SMT-2.jpg\" alt=\"SMT\" class=\"wp-image-2737\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/SMT-2.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/SMT-2-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/SMT-2-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Key_Technological_Trends_in_SMT\"><\/span>Principales tendances technologiques dans le domaine du traitement de surface<span class=\"ez-toc-section-end\"><\/span><\/h2><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Component_Packaging_Innovations\"><\/span>Innovations en mati\u00e8re d'emballage des composants<span class=\"ez-toc-section-end\"><\/span><\/h3><p>La technologie de l'emballage continue d'\u00e9voluer vers des tailles plus petites, plus d'E\/S et une plus grande fiabilit\u00e9 :<\/p><ul class=\"wp-block-list\"><li>Int\u00e9gration de modules multi-puces (MCM)<\/li>\n\n<li>D\u00e9veloppement d'un r\u00e9seau de r\u00e9sistances \u00e0 puce<\/li>\n\n<li>Technologie \"System-in-Package\" (SiP)<\/li>\n\n<li>Int\u00e9gration de syst\u00e8mes sur puce (SoC)<\/li>\n\n<li>Applications du silicium sur isolant (SOI)<\/li>\n\n<li>Recherche sur les dispositifs nano\u00e9lectroniques<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Production_Equipment_Advancements\"><\/span>Progr\u00e8s des \u00e9quipements de production<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Les \u00e9quipements SMT modernes progressent vers l'efficacit\u00e9, la flexibilit\u00e9 et la durabilit\u00e9 environnementale :<\/p><ul class=\"wp-block-list\"><li><strong>Haute efficacit\u00e9<\/strong>: L'alimentation en cartes \u00e0 deux voies et les conceptions \u00e0 t\u00eates multiples augmentent la productivit\u00e9<\/li>\n\n<li><strong>Syst\u00e8mes intelligents<\/strong>: L'inspection par vision et les commandes num\u00e9riques am\u00e9liorent la pr\u00e9cision et la rapidit\u00e9<\/li>\n\n<li><strong>Configurations flexibles<\/strong>: Les conceptions modulaires r\u00e9pondent \u00e0 des besoins de production diversifi\u00e9s<\/li>\n\n<li><strong>Solutions \u00e9cologiques<\/strong>: R\u00e9duction du bruit et contr\u00f4le de la pollution pour une fabrication \u00e9cologique<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Circuit_Board_Technology_Innovations\"><\/span>Innovations technologiques en mati\u00e8re de circuits imprim\u00e9s<span class=\"ez-toc-section-end\"><\/span><\/h3><p>les tendances de d\u00e9veloppement des cartes mont\u00e9es en surface (SMB) :<\/p><ul class=\"wp-block-list\"><li>Haute pr\u00e9cision : largeur de ligne de 0,06 mm, espacement de 0,08 mm<\/li>\n\n<li>Haute densit\u00e9 : ouverture minimale de 0,1 mm<\/li>\n\n<li>Conceptions ultra-minces : Cartes \u00e0 6 couches d'une \u00e9paisseur de 0,45 \u00e0 0,6 mm<\/li>\n\n<li>Cartes multicouches Buildup :Interconnexions haute densit\u00e9 de 30 \u00e0 50 couches<\/li>\n\n<li>Augmentation des applications de carton souple<\/li>\n\n<li>Utilisation g\u00e9n\u00e9ralis\u00e9e de substrats c\u00e9ramiques<\/li>\n\n<li>Technologies de rev\u00eatement de surface sans plomb<\/li><\/ul><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Core_Components_of_SMT_Processes\"><\/span>Composants essentiels des processus SMT<span class=\"ez-toc-section-end\"><\/span><\/h2><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Primary_Process_Types\"><\/span>Types de processus primaires<span class=\"ez-toc-section-end\"><\/span><\/h3><ol class=\"wp-block-list\"><li>Flux de p\u00e2te \u00e0 braser : Simple et efficace pour les produits miniaturis\u00e9s<\/li>\n\n<li>Soudure SMT-Wave :Combine les composants \u00e0 trous traversants et les composants mont\u00e9s en surface<\/li>\n\n<li>Flux de p\u00e2te \u00e0 braser double face :Permet un assemblage \u00e0 tr\u00e8s haute densit\u00e9<\/li>\n\n<li>Assemblage hybride :Int\u00e9gration de multiples avantages technologiques<\/li><\/ol><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Key_Production_Line_Processes\"><\/span>Processus cl\u00e9s de la cha\u00eene de production<span class=\"ez-toc-section-end\"><\/span><\/h3><ol class=\"wp-block-list\"><li><strong>Impression de la p\u00e2te \u00e0 braser<\/strong>:Application pr\u00e9cise sur les plages de la carte de circuit imprim\u00e9<\/li>\n\n<li><strong>Placement des composants<\/strong>Montage de haute pr\u00e9cision des CMS<\/li>\n\n<li><strong>Soudure par refusion<\/strong>Permet de r\u00e9aliser des connexions \u00e9lectriques fiables<\/li>\n\n<li><strong>Nettoyage et inspection<\/strong>: \u00c9limine les r\u00e9sidus et v\u00e9rifie la qualit\u00e9<\/li><\/ol><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Three_Critical_Process_Details\"><\/span>Trois d\u00e9tails essentiels du processus<span class=\"ez-toc-section-end\"><\/span><\/h3><ol class=\"wp-block-list\"><li><strong>Application de la p\u00e2te<\/strong>: Impression automatis\u00e9e ou semi-automatis\u00e9e pour une distribution uniforme<\/li>\n\n<li><strong>Placement des composants<\/strong>Positionnement au micron pr\u00e8s gr\u00e2ce \u00e0 des syst\u00e8mes de placement de pr\u00e9cision<\/li>\n\n<li><strong>Soudure par refusion<\/strong>Profilage pr\u00e9cis de la temp\u00e9rature pour un brasage optimal<\/li><\/ol><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Electrostatic_Discharge_ESD_Protection_Management\"><\/span>Gestion de la protection contre les d\u00e9charges \u00e9lectrostatiques (ESD)<span class=\"ez-toc-section-end\"><\/span><\/h2><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ESD_Risks\"><\/span>Risques li\u00e9s \u00e0 l'ESD<span class=\"ez-toc-section-end\"><\/span><\/h3><p>L'\u00e9lectricit\u00e9 statique peut causer des dommages imm\u00e9diats ou latents aux composants \u00e9lectroniques, les d\u00e9fauts latents repr\u00e9sentant 90 % des d\u00e9faillances et constituant une menace importante pour la qualit\u00e9.<\/p><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Protection_Measures\"><\/span>Mesures de protection<span class=\"ez-toc-section-end\"><\/span><\/h3><ol class=\"wp-block-list\"><li><strong>Syst\u00e8mes de protection individuelle<\/strong>: Bracelets, v\u00eatements et chaussures antistatiques<\/li>\n\n<li><strong>Contr\u00f4les environnementaux<\/strong>: Rev\u00eatements de sol et surfaces de travail \u00e0 s\u00e9curit\u00e9 ESD<\/li>\n\n<li><strong>Protocoles op\u00e9rationnels<\/strong>: Proc\u00e9dures strictes de gestion de l'ESD dans les zones de production<\/li><\/ol><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"402\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/SMT-1.jpg\" alt=\"SMT\" class=\"wp-image-2738\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/SMT-1.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/SMT-1-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/SMT-1-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"SMT_three_core_process_technology_details\"><\/span>D\u00e9tails de la technologie des trois proc\u00e9d\u00e9s de base SMT<span class=\"ez-toc-section-end\"><\/span><\/h2><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Solder_Paste_Application_Process\"><\/span>1. Processus d'application de la p\u00e2te \u00e0 braser<span class=\"ez-toc-section-end\"><\/span><\/h3><p>En tant que premier processus critique dans les lignes de production SMT, la qualit\u00e9 de l'application de la p\u00e2te \u00e0 braser a un impact direct sur les op\u00e9rations suivantes.L'impression moderne de p\u00e2te \u00e0 braser utilise principalement la technologie d'impression au pochoir, dont les principaux aspects techniques sont les suivants :<\/p><ul class=\"wp-block-list\"><li><strong>Mat\u00e9riel d'impression<\/strong>:<\/li>\n\n<li>Les imprimantes enti\u00e8rement automatiques dot\u00e9es de syst\u00e8mes d'alignement par vision atteignent une pr\u00e9cision de positionnement de \u00b112,5\u03bcm.<\/li>\n\n<li>Les mod\u00e8les semi-automatiques conviennent \u00e0 la production de lots moyens\/petits.<\/li>\n\n<li><strong>Contr\u00f4le des processus<\/strong>:<\/li>\n\n<li>L'angle de la raclette est g\u00e9n\u00e9ralement maintenu \u00e0 45-60\u00b0.<\/li>\n\n<li>Vitesse d'impression contr\u00f4l\u00e9e entre 20 et 80 mm\/s<\/li>\n\n<li>Pression d'impression maintenue entre 5 et 15 kg<\/li>\n\n<li><strong>Dessin au pochoir<\/strong>:<\/li>\n\n<li>S\u00e9lection de l'\u00e9paisseur : 0,1-0,15 mm pour les composants standard, 0,08 mm pour les composants \u00e0 pas fin<\/li>\n\n<li>Conception de l'ouverture :Le rapport de surface &gt;0,66 garantit une bonne lib\u00e9ration de la p\u00e2te.<\/li>\n\n<li><strong>Gestion des p\u00e2tes<\/strong>:<\/li>\n\n<li>N\u00e9cessite un reconditionnement d'au moins 4 heures avant utilisation<\/li>\n\n<li>2-3 minutes de m\u00e9lange permettent d'obtenir une viscosit\u00e9 optimale<\/li>\n\n<li>Conditions ambiantes : 23\u00b13\u00b0C, 40-60% RH<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Component_Placement_Technology\"><\/span>2.Technologie de placement des composants<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Au c\u0153ur de la fabrication des CMS, les machines de placement modernes permettent un assemblage automatis\u00e9 ultra-pr\u00e9cis :<\/p><ul class=\"wp-block-list\"><li><strong>Types d'\u00e9quipement<\/strong>:<\/li>\n\n<li>Plaqueuses \u00e0 grande vitesse : Jusqu'\u00e0 250 000 CPH pour les petits composants<\/li>\n\n<li>Machines multifonctionnelles :Manipuler des composants de forme irr\u00e9guli\u00e8re avec une pr\u00e9cision de \u00b125\u03bcm.<\/li>\n\n<li>Syst\u00e8mes modulaires :Des configurations flexibles pour des besoins vari\u00e9s<\/li>\n\n<li><strong>Param\u00e8tres techniques critiques<\/strong>:<\/li>\n\n<li>Pr\u00e9cision de placement : \u00b130\u03bcm@3\u03c3 (les machines haut de gamme atteignent \u00b115\u03bcm).<\/li>\n\n<li>Taille minimale des composants : 0201 (0,25\u00d70,125 mm) ou moins<\/li>\n\n<li>Reconnaissance des composants : CCD haute r\u00e9solution (jusqu'\u00e0 0,01 mm\/pixel)<\/li>\n\n<li><strong>Contr\u00f4les cl\u00e9s des processus<\/strong>:<\/li>\n\n<li>S\u00e9lection et entretien des buses<\/li>\n\n<li>Calibrage de l'alimentateur<\/li>\n\n<li>Contr\u00f4le de la force de placement (r\u00e9glable de 10 \u00e0 500 g)<\/li>\n\n<li>\u00c9talonnage du syst\u00e8me d'alignement de la vision<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Reflow_Soldering_Process\"><\/span>3.Processus de soudage par refusion<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Le processus critique pour des joints de soudure fiables n\u00e9cessite un contr\u00f4le pr\u00e9cis de la temp\u00e9rature :<\/p><ul class=\"wp-block-list\"><li><strong>Zones du profil de temp\u00e9rature<\/strong>:<\/li>\n\n<li>Pr\u00e9chauffage : Ambiant\u2192150\u00b0C \u00e0 une vitesse de rampe de 1-3\u00b0C\/s<\/li>\n\n<li>Trempage : 150-180\u00b0C pendant 60-90 secondes<\/li>\n\n<li>Refusion : Temp\u00e9rature de pointe 220-245\u00b0C pendant 30-60 secondes<\/li>\n\n<li>Refroidissement :Taux &lt;4\u00b0C\/s<\/li>\n\n<li><strong>Types d'\u00e9quipement<\/strong>:<\/li>\n\n<li>Refusion par convection :Excellente uniformit\u00e9 de la temp\u00e9rature<\/li>\n\n<li>Refusion par infrarouge :Efficacit\u00e9 thermique \u00e9lev\u00e9e<\/li>\n\n<li>Syst\u00e8mes hybrides :Combiner les deux avantages<\/li>\n\n<li><strong>Contr\u00f4les critiques des processus<\/strong>:<\/li>\n\n<li>Teneur en oxyg\u00e8ne (&lt;1000ppm)<\/li>\n\n<li>Vitesse du convoyeur (0,8-1,5 m\/min)<\/li>\n\n<li>Placement et contr\u00f4le des thermocouples<\/li>\n\n<li>Optimisation du profil pour diff\u00e9rentes p\u00e2tes<\/li>\n\n<li><strong>Pr\u00e9vention des d\u00e9fauts courants<\/strong>:<\/li>\n\n<li>La mise au tombeau : Optimiser la conception de la plate-forme, contr\u00f4ler le taux de rampe<\/li>\n\n<li>Pontage :Ajuster les ouvertures du pochoir, les param\u00e8tres de la raclette<\/li>\n\n<li>Joints froids :Assurer une temp\u00e9rature et une dur\u00e9e de pointe ad\u00e9quates<\/li><\/ul><p>Ces trois processus constituent le c\u0153ur technologique de la fabrication SMT.Chacun d'entre eux n\u00e9cessite un contr\u00f4le pr\u00e9cis des processus et une gestion stricte de la qualit\u00e9 afin de garantir la fiabilit\u00e9 et la coh\u00e9rence du produit final. Les lignes SMT modernes mettent en \u0153uvre des syst\u00e8mes MES pour le contr\u00f4le de l'ensemble des donn\u00e9es du processus, ce qui garantit la tra\u00e7abilit\u00e9 des param\u00e8tres et la stabilit\u00e9 du processus.<\/p>","protected":false},"excerpt":{"rendered":"<p>La technologie de montage en surface (SMT) repr\u00e9sente le c\u0153ur de l'assemblage \u00e9lectronique moderne, transformant les composants discrets traditionnels \u00e0 trous traversants en puces compactes sans plomb ou \u00e0 plomb court mont\u00e9es directement sur les surfaces des cartes de circuits imprim\u00e9s. <\/p>","protected":false},"author":1,"featured_media":2739,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[112],"tags":[244,243],"class_list":["post-2735","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge","tag-smt","tag-surface-mount-technology"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - 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