{"id":2945,"date":"2025-06-01T08:32:00","date_gmt":"2025-06-01T00:32:00","guid":{"rendered":"https:\/\/www.topfastpcb.com\/?p=2945"},"modified":"2025-05-28T18:34:39","modified_gmt":"2025-05-28T10:34:39","slug":"what-is-pcb-surface-finishes","status":"publish","type":"post","link":"https:\/\/www.topfastpcb.com\/fr\/blog\/what-is-pcb-surface-finishes\/","title":{"rendered":"Qu'est-ce que le traitement de surface des PCB ?"},"content":{"rendered":"<p>Le traitement de surface des circuits imprim\u00e9s fait r\u00e9f\u00e9rence \u00e0 la zone de la feuille de cuivre expos\u00e9e du circuit imprim\u00e9 (comme les plots, les chemins conducteurs) recouverte d'une couche de m\u00e9tal ou d'alliage, en tant que surface de cuivre de la \"barri\u00e8re protectrice\" et du \"milieu de soudage\".<\/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\/what-is-pcb-surface-finishes\/#PCB_Surface_Finishing_Core_Functions\" >Fonctions essentielles du traitement de surface des circuits imprim\u00e9s<\/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\/what-is-pcb-surface-finishes\/#The_importance_of_PCB_surface_treatment\" >L'importance du traitement de surface des PCB<\/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\/what-is-pcb-surface-finishes\/#Core_purpose_to_solve_the_%E2%80%9Coxidation_problem%E2%80%9D_of_the_copper_surface\" >Objectif principal : r\u00e9soudre le \"probl\u00e8me d'oxydation\" de la surface du cuivre.<\/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\/what-is-pcb-surface-finishes\/#Industry_Importance_a_critical_process_throughout_the_PCB_life_cycle\" >Importance pour l'industrie : processus critique tout au long du cycle de vie des PCB<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/what-is-pcb-surface-finishes\/#In-Depth_Comparison_of_7_PCB_Surface_Finishes\" >Comparaison approfondie de 7 finitions de surface de circuits imprim\u00e9s<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/what-is-pcb-surface-finishes\/#1_Hot_Air_Solder_Leveling_HASL\" >1. Mise \u00e0 niveau de la soudure \u00e0 l'air chaud (HASL)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/what-is-pcb-surface-finishes\/#2_Electroless_Nickel_Immersion_Gold_ENIG\" >2.Nickel dor\u00e9 par immersion sans \u00e9lectrolyse (ENIG)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/what-is-pcb-surface-finishes\/#3_Organic_Solderability_Preservative_OSP\" >3.Conservateur de soudabilit\u00e9 organique (OSP)<\/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\/what-is-pcb-surface-finishes\/#4_Immersion_Tin_ImSn\" >4.\u00c9tain par immersion (ImSn)<\/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\/what-is-pcb-surface-finishes\/#5_Immersion_Silver_ImAg\" >5.Argent d'immersion (ImAg)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/what-is-pcb-surface-finishes\/#6_Electroless_Nickel_Electroless_Palladium_Immersion_Gold_ENEPIG\" >6.Nickel chimique Palladium chimique Or d'immersion (ENEPIG)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/what-is-pcb-surface-finishes\/#7_Electrolytic_Hard_Gold\" >7.Or dur \u00e9lectrolytique<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/what-is-pcb-surface-finishes\/#Selection_Decision_Tree\" >Arbre de d\u00e9cision pour la s\u00e9lection<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/what-is-pcb-surface-finishes\/#5_Common_Failure_Clinics\" >5 cliniques d'\u00e9chec courantes<\/a><\/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\/what-is-pcb-surface-finishes\/#Pro_Tips_from_PCB_Manufacturers\" >Conseils de pro des fabricants de circuits imprim\u00e9s<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/what-is-pcb-surface-finishes\/#Cost-Performance_Tradeoff_Analysis\" >Analyse du compromis co\u00fbt-performance<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/what-is-pcb-surface-finishes\/#Future_Trends_in_Surface_Finishes\" >Tendances futures en mati\u00e8re de finitions de surface<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"PCB_Surface_Finishing_Core_Functions\"><\/span>Fonctions essentielles du traitement de surface des circuits imprim\u00e9s<span class=\"ez-toc-section-end\"><\/span><\/h2><p>Protection physique : Le cuivre est isol\u00e9 du contact avec l'air et l'humidit\u00e9, ce qui emp\u00eache l'oxydation, la sulfuration et d'autres r\u00e9actions corrosives ;<br>Optimisation de la soudabilit\u00e9 :Fournir une interface de soudure plate et stable pour assurer une connexion fiable entre la soudure (par exemple, la p\u00e2te \u00e0 braser) et la couche de cuivre ;<br>Garantie de performance \u00e9lectrique : pour maintenir la stabilit\u00e9 de la conduction du circuit, pour \u00e9viter les anomalies d'imp\u00e9dance ou les risques de court-circuit dus \u00e0 la d\u00e9t\u00e9rioration de la surface du cuivre.<\/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\/PCB-Surface-Finishes-1.jpg\" alt=\"Finitions de surface des circuits imprim\u00e9s\" class=\"wp-image-2948\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes-1.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes-1-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes-1-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"The_importance_of_PCB_surface_treatment\"><\/span>L'importance du traitement de surface des PCB<span class=\"ez-toc-section-end\"><\/span><\/h2><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Core_purpose_to_solve_the_%E2%80%9Coxidation_problem%E2%80%9D_of_the_copper_surface\"><\/span>Objectif principal : r\u00e9soudre le \"probl\u00e8me d'oxydation\" de la surface du cuivre.<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Le cuivre \u00e0 temp\u00e9rature ambiante avec l'oxyg\u00e8ne de l'air, le contact avec la vapeur d'eau g\u00e9n\u00e8re de l'oxyde de cuivre (CuO) ou du carbonate de cuivre alcalin (vert de cuivre), ces couches oxyd\u00e9es r\u00e9duisent de mani\u00e8re significative la mouillabilit\u00e9 de la soudure &amp;#8212 ce qui se manifeste sp\u00e9cifiquement par le fait que la soudure \"refuse de souder\", que les joints de soudure sont faux ou fissur\u00e9s. La pr\u00e9paration de la surface garantit que la surface du cuivre est active pendant le brasage en la recouvrant d'un rev\u00eatement qui bloque radicalement le chemin de contact du cuivre avec l'oxydant.<\/p><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Industry_Importance_a_critical_process_throughout_the_PCB_life_cycle\"><\/span>Importance pour l'industrie : processus critique tout au long du cycle de vie des PCB<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>1.Fabrication<\/strong><br>Garantir les rendements de la technologie SMT (Surface Mount Technology) et r\u00e9duire les co\u00fbts de reprise dus \u00e0 une mauvaise soudabilit\u00e9 ;<br>L'uniformit\u00e9 de l'enrobage a une incidence directe sur la r\u00e9sistance m\u00e9canique des composants apr\u00e8s le brasage (par exemple, la tension du joint de soudure, la force de cisaillement).<\/p><p><strong>2. le stockage et le transport<br><\/strong>Dans le cadre d'un stockage \u00e0 long terme, le rev\u00eatement peut r\u00e9sister \u00e0 l'humidit\u00e9, au brouillard salin et \u00e0 l'\u00e9rosion due \u00e0 d'autres facteurs environnementaux (dans les zones c\u00f4ti\u00e8res o\u00f9 se trouvent des \u00e9quipements, les PCB doivent faire l'objet d'une attention particuli\u00e8re afin de pr\u00e9venir la rouille) ;<br>\u00c9viter les dommages \u00e0 la surface du cuivre caus\u00e9s par les frottements et les collisions pendant le transport.<\/p><p><strong>3. adaptation \u00e0 l'utilisation des sc\u00e8nes<br><\/strong>Les environnements \u00e0 haute temp\u00e9rature (tels que l'\u00e9lectronique automobile, le contr\u00f4le industriel) exigent que le rev\u00eatement ait une r\u00e9sistance au vieillissement afin d'\u00e9viter la d\u00e9composition ou l'oxydation du rev\u00eatement \u00e0 haute temp\u00e9rature ;<br>Dans les circuits \u00e0 haute fr\u00e9quence, la plan\u00e9it\u00e9 du rev\u00eatement affecte la perte de transmission du signal (par exemple, le proc\u00e9d\u00e9 de dorure par immersion est couramment utilis\u00e9 dans les circuits imprim\u00e9s RF en raison de la bonne uniformit\u00e9 du rev\u00eatement).<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"In-Depth_Comparison_of_7_PCB_Surface_Finishes\"><\/span>Comparaison approfondie de 7 finitions de surface de circuits imprim\u00e9s<span class=\"ez-toc-section-end\"><\/span><\/h2><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Hot_Air_Solder_Leveling_HASL\"><\/span>1. Mise \u00e0 niveau de la soudure \u00e0 l'air chaud (HASL)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Principe du processus<\/strong>:<br>L'immersion des circuits imprim\u00e9s dans de la soudure en fusion \u00e0 260\u00b0C (Sn63Pb37 ou SAC305), suivie de l'\u00e9limination de l'exc\u00e8s de soudure \u00e0 l'air chaud \u00e0 haute pression (400\u00b0C), cr\u00e9e des surfaces irr\u00e9guli\u00e8res et accident\u00e9es.<\/p><p><strong>Id\u00e9al pour<\/strong>:<\/p><ul class=\"wp-block-list\"><li>\u00c9lectronique grand public (chargeurs, pilotes de LED)<\/li>\n\n<li>Commandes de gros volumes sensibles aux co\u00fbts<\/li><\/ul><p><strong>Une le\u00e7on difficile<\/strong>:<br>Un fabricant de routeurs a connu des vides g\u00e9n\u00e9ralis\u00e9s dans les BGA en utilisant du HASL sans plomb, et a fini par ajouter une \u00e9tape de pr\u00e9-\u00e9tamage des tampons qui a augment\u00e9 le co\u00fbt de 0,17 $\/carte.<\/p><p><strong>Contr\u00f4les critiques<\/strong>:<\/p><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Param\u00e8tres<\/th><th>Cible<\/th><th>Risque de d\u00e9viation<\/th><\/tr><\/thead><tbody><tr><td>Teneur en Cu de la soudure<\/td><td>&lt;0.7%<\/td><td>Fragilit\u00e9 des joints de soudure<\/td><\/tr><tr><td>Angle de la lame d'air<\/td><td>75\u00b0\u00b12\u00b0<\/td><td>Epaisseur in\u00e9gale<\/td><\/tr><tr><td>Taux de refroidissement<\/td><td>4\u00b0C\/s<\/td><td>Rugosit\u00e9 excessive<\/td><\/tr><\/tbody><\/table><\/figure><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Electroless_Nickel_Immersion_Gold_ENIG\"><\/span>2.Nickel dor\u00e9 par immersion sans \u00e9lectrolyse (ENIG)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Structure des couches<\/strong>:<br>&#8220;Sandwich&#8221; deposition: Ni sans \u00e9lectrolyse (3-5\u03bcm) \u2192 Au de d\u00e9placement (0,05-0,1\u03bcm). Le Ni agit comme un &#8220;pare-feu de cuivre,&amp;#8221 ; Au comme une &#8220;interface de soudure.&amp;#8221 ;<\/p><p><strong>\u00c9tude de cas sur les fr\u00e9quences \u00e9lev\u00e9es<\/strong>:<br>Une carte radar \u00e0 ondes millim\u00e9triques a choisi ENIG plut\u00f4t qu'OSP parce que la perte d'effet de peau d'Au \u00e9tait 23% plus faible (@77GHz).<\/p><p><strong>Analyse du coussin noir<\/strong>:<br>Lorsque le bain de Ni d\u00e9passe 91\u00b0C, la s\u00e9gr\u00e9gation du phosphore forme des phases Ni3P fragiles (le MEB montre une morphologie craquel\u00e9e). Pr\u00e9vention :<\/p><ul class=\"wp-block-list\"><li>Ajouter le tampon d'acide citrique<\/li>\n\n<li>Mettre en \u0153uvre le placage par impulsion<\/li>\n\n<li>Inclure le micro-mordan\u00e7age avant le d\u00e9p\u00f4t d'Au<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Organic_Solderability_Preservative_OSP\"><\/span>3.Conservateur de soudabilit\u00e9 organique (OSP)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Protection mol\u00e9culaire<\/strong>:<br>Les ch\u00e9lates benzimidazole-cuivre forment des films de 0,2-0,5\u03bcm r\u00e9sistant \u00e0 une oxydation naturelle de 6 mois.<\/p><p><strong>Le choix privil\u00e9gi\u00e9 de la 5G<\/strong>:<br>Une carte AAU de station de base utilisant OSP+LDI a \u00e9conomis\u00e9 4,2 $\/m\u00b2 par rapport \u00e0 ENIG avec une perte d'insertion inf\u00e9rieure de 0,3dB\/cm (@28GHz).<\/p><p><strong>Ce qu&amp;#8217il ne faut pas faire en mati\u00e8re de stockage<\/strong>:<\/p><ul class=\"wp-block-list\"><li>RH&gt;60% provoque l'hydrolyse du film<\/li>\n\n<li>Les emballages contenant du soufre cr\u00e9ent des taches noires de Cu2S<\/li>\n\n<li>Doit SMT dans les 24 heures suivant le d\u00e9ballage<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Immersion_Tin_ImSn\"><\/span>4.\u00c9tain par immersion (ImSn)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Microstructure<\/strong>:<br>L'\u00e9paisseur de l'interm\u00e9tallique Cu6Sn5 (id\u00e9al : 1,2-1,8\u03bcm via EDX) d\u00e9termine la fiabilit\u00e9.<\/p><p><strong>Succ\u00e8s automobile<\/strong>:<br>Un module ECU a pass\u00e9 3000x cycles -40\u00b0C~125\u00b0C avec ImSn contre 2400x avec ENIG.<\/p><p><strong>Risques li\u00e9s au processus<\/strong>:<\/p><ul class=\"wp-block-list\"><li>Croissance des chuchotements d'\u00e9tain (supprim\u00e9e par le pr\u00e9-vieillissement par refusion)<\/li>\n\n<li>Contamination crois\u00e9e dans les panneaux double face<\/li>\n\n<li>Incompatible avec le collage de fils d'aluminium<\/li><\/ul><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\/PCB-Surface-Finishes-2.jpg\" alt=\"Finitions de surface des circuits imprim\u00e9s\" class=\"wp-image-2949\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes-2.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes-2-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes-2-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Immersion_Silver_ImAg\"><\/span>5.Argent d'immersion (ImAg)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Int\u00e9grit\u00e9 du signal Bord<\/strong>:<br>La perte d'insertion \u00e0 10 GHz est inf\u00e9rieure de 15 % \u00e0 celle de l'ENIG (selon IPC-6012B).<\/p><p><strong>Contre-mesures en mati\u00e8re de migration<\/strong>:<br>Le dopage par nanoparticules augmente le seuil de migration de 3,1V \u00e0 5,6V pour les modules d'alimentation de 48V.<\/p><p><strong>Contr\u00f4le de l'\u00e9paisseur<\/strong>:<\/p><ul class=\"wp-block-list\"><li>Le thiosulfate de sodium comme inhibiteur<\/li>\n\n<li>Cuve de m\u00e9tallisation par pulv\u00e9risation<\/li>\n\n<li>Post-traitement de passivation au chromate<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6_Electroless_Nickel_Electroless_Palladium_Immersion_Gold_ENEPIG\"><\/span>6.Nickel chimique Palladium chimique Or d'immersion (ENEPIG)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Innovation en couches<\/strong>:<br>Le Pd de 0,1-0,2\u03bcm entre Ni (3-4\u03bcm) et Au (0,03-0,05\u03bcm) emp\u00eache la diffusion de Au.<\/p><p><strong>Application SiP<\/strong>:<br>Un bo\u00eetier 3D r\u00e9alis\u00e9 par brasage mixte fil Au\/SnAgCu \u00e0 l'aide d'ENEPIG.<\/p><p><strong>Optimisation des co\u00fbts<\/strong>:<\/p><ul class=\"wp-block-list\"><li>Gradient d'\u00e9paisseur de Pd (0.15\u03bcm au bord\/0.08\u03bcm au centre)<\/li>\n\n<li>Alliage Pd-Co au lieu de Pd pur<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"7_Electrolytic_Hard_Gold\"><\/span>7.Or dur \u00e9lectrolytique<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Protection de niveau militaire<\/strong>:<br>L'Au dop\u00e9 au cobalt (1-3\u03bcm) \u00e0 une duret\u00e9 de 180HV r\u00e9siste \u00e0 une usure 50x plus importante que l'ENIG.<\/p><p><strong>Sp\u00e9cifications du connecteur<\/strong>:<\/p><ul class=\"wp-block-list\"><li>Biseau des doigts en or : 30\u00b0\u00b11\u00b0.<\/li>\n\n<li>\u00c9paisseur du nickel \u22655\u03bcm<\/li>\n\n<li>Zones de transition de 3 mm requises<\/li><\/ul><p><strong>Pi\u00e8ge des co\u00fbts<\/strong>:<br>La zone de placage incorrecte d&amp;#8217un fond de panier a fait passer le co\u00fbt de la finition de 8 % \u00e0 34 % du total.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Selection_Decision_Tree\"><\/span>Arbre de d\u00e9cision pour la s\u00e9lection<span class=\"ez-toc-section-end\"><\/span><\/h2><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"723\" height=\"549\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/Selection-Decision-Tree.jpg\" alt=\"Arbre de d\u00e9cision pour la s\u00e9lection\" class=\"wp-image-2946\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/Selection-Decision-Tree.jpg 723w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/Selection-Decision-Tree-300x228.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/Selection-Decision-Tree-16x12.jpg 16w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/Selection-Decision-Tree-600x456.jpg 600w\" sizes=\"auto, (max-width: 723px) 100vw, 723px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Common_Failure_Clinics\"><\/span>5 cliniques d'\u00e9chec courantes<span class=\"ez-toc-section-end\"><\/span><\/h2><p><strong>Q1 : R\u00e9sidus noirs sur les pastilles ENIG apr\u00e8s refusion ?<\/strong><br>\u2192 &#8220;Fragilisation de l'or&#8221; ! V\u00e9rifier imm\u00e9diatement :<\/p><ol class=\"wp-block-list\"><li>Teneur en Ni-P (7-9% optimale)<\/li>\n\n<li>\u00c9paisseur d'au &gt;0.08\u03bcm ?<\/li>\n\n<li>P\u00e2te \u00e0 braser Contenu Bi<\/li><\/ol><p><strong>Q2 : Des moustaches d'\u00e9tain sur l'ImSn apr\u00e8s un stockage de 3 mois ?<\/strong><br>\u2192 Ex\u00e9cuter le \"trio de sauvetage\" :<\/p><ol class=\"wp-block-list\"><li>150\u00b0C au four pendant 2 heures<\/li>\n\n<li>Application d'un nanorev\u00eatement anti-diffusion<\/li>\n\n<li>Passer au proc\u00e9d\u00e9 de l'\u00e9tain mat<\/li><\/ol><p><strong>Q3 : Les cartes OSP pr\u00e9sentent une mauvaise mouillabilit\u00e9 apr\u00e8s de multiples reflux ?<\/strong><br>\u2192 Le film organique se d\u00e9grade ! Proc\u00e9dez comme suit :<\/p><ol class=\"wp-block-list\"><li>V\u00e9rifier que la temp\u00e9rature maximale de refusion n&amp;#8217a pas d\u00e9pass\u00e9 245\u00b0C<\/li>\n\n<li>V\u00e9rifier la dur\u00e9e de stockage &amp;#8211 ; les OSP se d\u00e9gradent apr\u00e8s 6 mois<\/li>\n\n<li>Envisager l'ajout d'une atmosph\u00e8re d'azote pendant la refusion<\/li><\/ol><p><strong>Q4 : Les cartes ENEPIG \u00e9chouent aux tests d'arrachage des fils ?<\/strong><br>\u2192 G\u00e9n\u00e9ralement, il s'agit d'un probl\u00e8me de couche de palladium :<\/p><ol class=\"wp-block-list\"><li>Mesurer l'\u00e9paisseur de Pd (0.15-0.25\u03bcm id\u00e9al)<\/li>\n\n<li>V\u00e9rifier l'oxydation du Pd (analyse XPS recommand\u00e9e)<\/li>\n\n<li>Ajuster le pH du bain de PD entre 8,2 et 8,6<\/li><\/ol><p><strong>Q5 : Avez-vous des cartes HASL avec une \u00e9paisseur de soudure in\u00e9gale ?<\/strong><br>\u2192 Calibrage de la lame d'air n\u00e9cessaire :<\/p><ol class=\"wp-block-list\"><li>V\u00e9rifier la pression de la lame d'air (25-35 psi typiquement)<\/li>\n\n<li>V\u00e9rifier le temps de mise \u00e0 niveau (3-5 secondes au maximum)<\/li>\n\n<li>Inspecter les fixations du support de la carte pour v\u00e9rifier qu'il n'y a pas de d\u00e9formation<\/li><\/ol><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Pro_Tips_from_PCB_Manufacturers\"><\/span>Conseils de pro de <a href=\"https:\/\/www.topfastpcb.com\/fr\/\">Fabricants de circuits imprim\u00e9s<\/a><span class=\"ez-toc-section-end\"><\/span><\/h2><ol class=\"wp-block-list\"><li><strong>HASL<\/strong> &amp;#8211 ; Pour les cartes double face, demander un traitement \"dual dip\" pour \u00e9viter l&amp;#8217effet d&amp;#8217ombre.<\/li>\n\n<li><strong>ENIG<\/strong> &amp;#8211 ; Toujours sp\u00e9cifier &#8220;mid-phosphorus&amp;#8221 ; nickel (6-9% P) pour une meilleure fiabilit\u00e9<\/li>\n\n<li><strong>OSP<\/strong> &amp;#8211 ; Pour les applications \u00e0 haute fiabilit\u00e9, choisissez les formulations OSP de type 3.<\/li>\n\n<li><strong>ImSn<\/strong> &amp;#8211 ; Le stockage dans des armoires \u00e0 azote prolonge la dur\u00e9e de conservation de 6 \u00e0 12 mois<\/li>\n\n<li><strong>ImAg<\/strong> &amp;#8211 ; Ajouter un traitement anti-ternissement si les panneaux doivent subir plusieurs cycles thermiques<\/li>\n\n<li><strong>ENEPIG<\/strong> &amp;#8211 ; Sp\u00e9cifiez &#8220;le nickel \u00e0 faible contrainte&amp;#8221 ; pour les applications de circuits imprim\u00e9s flexibles<\/li>\n\n<li><strong>Or dur<\/strong> &amp;#8211 ; La teneur en cobalt doit \u00eatre comprise entre 0,1 et 0,3 % pour une r\u00e9sistance optimale \u00e0 l'usure.<\/li><\/ol><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cost-Performance_Tradeoff_Analysis\"><\/span>Analyse du compromis co\u00fbt-performance<span class=\"ez-toc-section-end\"><\/span><\/h2><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Finition<\/th><th>Co\u00fbt relatif<\/th><th>Soudabilit\u00e9<\/th><th>Dur\u00e9e de conservation<\/th><th>Perte de signal<\/th><\/tr><\/thead><tbody><tr><td>HASL<\/td><td>$<\/td><td>\u2605\u2605\u2605\u2605\u2606<\/td><td>12 mois<\/td><td>Haut<\/td><\/tr><tr><td>ENIG<\/td><td>$$$$<\/td><td>\u2605\u2605\u2605\u2606\u2606<\/td><td>12 mois<\/td><td>Moyen<\/td><\/tr><tr><td>OSP<\/td><td>$<\/td><td>\u2605\u2605\u2605\u2605\u2606<\/td><td>6 mois<\/td><td>Le plus bas<\/td><\/tr><tr><td>ImSn<\/td><td>$$<\/td><td>\u2605\u2605\u2605\u2605\u2605<\/td><td>6 mois<\/td><td>Moyen<\/td><\/tr><tr><td>ImAg<\/td><td>$$$<\/td><td>\u2605\u2605\u2605\u2605\u2606<\/td><td>9 mois<\/td><td>Faible<\/td><\/tr><tr><td>ENEPIG<\/td><td>$$$$$<\/td><td>\u2605\u2605\u2605\u2606\u2606<\/td><td>12 mois<\/td><td>Moyen<\/td><\/tr><tr><td>Or dur<\/td><td>$$$$$$<\/td><td>\u2605\u2605\u2606\u2606\u2606<\/td><td>24 mois<\/td><td>Haut<\/td><\/tr><\/tbody><\/table><\/figure><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\/PCB-Surface-Finishes-4.jpg\" alt=\"Finitions de surface des circuits imprim\u00e9s\" class=\"wp-image-2950\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes-4.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes-4-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes-4-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Future_Trends_in_Surface_Finishes\"><\/span>Tendances futures en mati\u00e8re de finitions de surface<span class=\"ez-toc-section-end\"><\/span><\/h2><ol class=\"wp-block-list\"><li><strong>Nanocomposite OSP<\/strong> &amp;#8211 ; Des essais montrent que les formulations am\u00e9lior\u00e9es par le graph\u00e8ne ont une dur\u00e9e de conservation deux fois plus longue<\/li>\n\n<li><strong>ENIG basse temp\u00e9rature<\/strong> &amp;#8211 ; De nouvelles chimies permettent un traitement \u00e0 65\u00b0C au lieu des 85\u00b0C traditionnels<\/li>\n\n<li><strong>Finitions s\u00e9lectives<\/strong> &amp;#8211 ; Combinaison de diff\u00e9rentes finitions sur des cartes uniques (par exemple, ENIG + OSP)<\/li>\n\n<li><strong>Films d'autogu\u00e9rison<\/strong> &amp;#8211 ; OSP exp\u00e9rimental qui r\u00e9pare les rayures mineures pendant la refusion<\/li>\n\n<li><strong>Proc\u00e9d\u00e9s sans halog\u00e8ne<\/strong> &amp;#8211 ; R\u00e9pondre aux futures r\u00e9glementations environnementales de l'UE<\/li><\/ol><p>Lorsque vous \u00e9valuez les finitions de surface, n&amp;#8217oubliez pas qu&amp;#8217il n&amp;#8217y a pas d&amp;#8217option universelle &#8220;meilleure&amp;#8221 ; il n&amp;#8217y a que la solution la plus appropri\u00e9e pour vos exigences de conception sp\u00e9cifiques, vos contraintes budg\u00e9taires et vos capacit\u00e9s de fabrication. La finition la plus ch\u00e8re n&amp;#8217est pas n\u00e9cessairement le bon choix, tout comme l&amp;#8217option la plus \u00e9conomique peut entra\u00eener des d\u00e9faillances sur le terrain. Effectuez toujours des tests en conditions r\u00e9elles avec votre conception de carte de circuit imprim\u00e9 et vos composants avant de finaliser votre s\u00e9lection.<\/p>","protected":false},"excerpt":{"rendered":"<p>De l'\u00e9lectronique grand public \u00e0 l'\u00e9quipement a\u00e9rospatial, les finitions de surface des PCB ont un impact critique sur la fiabilit\u00e9 des produits.Ce guide examine les 7 principaux proc\u00e9d\u00e9s au niveau microstructural, compare les co\u00fbts\/performances, r\u00e9v\u00e8le les m\u00e9canismes de d\u00e9faillance tels que le black pad ENIG et la carbonisation OSP, et fournit des strat\u00e9gies de s\u00e9lection optimales pour diff\u00e9rents budgets\/exigences.<\/p>","protected":false},"author":1,"featured_media":2947,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[109],"tags":[266],"class_list":["post-2945","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-faq","tag-pcb-surface-finishes"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is PCB Surface Finishes? - Topfastpcb<\/title>\n<meta name=\"description\" content=\"In-depth comparison of 7 PCB surface finish processes (HASL\/ENIG\/OSP\/Immersion Tin\/Immersion Silver\/ENEPIG\/Electrolytic Hard Gold), including their pros\/cons, selection criteria, and solutions to 5 common soldering failures.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.topfastpcb.com\/fr\/blog\/what-is-pcb-surface-finishes\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is PCB Surface Finishes? - Topfastpcb\" \/>\n<meta property=\"og:description\" content=\"In-depth comparison of 7 PCB surface finish processes (HASL\/ENIG\/OSP\/Immersion Tin\/Immersion Silver\/ENEPIG\/Electrolytic Hard Gold), including their pros\/cons, selection criteria, and solutions to 5 common soldering failures.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.topfastpcb.com\/fr\/blog\/what-is-pcb-surface-finishes\/\" \/>\n<meta property=\"og:site_name\" content=\"Topfastpcb\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T00:32:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"402\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"\u6258\u666e\u6cd5\u65af\u7279\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u6258\u666e\u6cd5\u65af\u7279\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/\"},\"author\":{\"name\":\"\u6258\u666e\u6cd5\u65af\u7279\",\"@id\":\"https:\/\/www.topfastpcb.com\/#\/schema\/person\/39870874f1c329f3cd3693593dbdce3a\"},\"headline\":\"What is PCB Surface Finishes?\",\"datePublished\":\"2025-06-01T00:32:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/\"},\"wordCount\":1180,\"publisher\":{\"@id\":\"https:\/\/www.topfastpcb.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes.jpg\",\"keywords\":[\"PCB Surface Finishes\"],\"articleSection\":[\"FAQ\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/\",\"url\":\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/\",\"name\":\"What is PCB Surface Finishes? - Topfastpcb\",\"isPartOf\":{\"@id\":\"https:\/\/www.topfastpcb.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes.jpg\",\"datePublished\":\"2025-06-01T00:32:00+00:00\",\"description\":\"In-depth comparison of 7 PCB surface finish processes (HASL\/ENIG\/OSP\/Immersion Tin\/Immersion Silver\/ENEPIG\/Electrolytic Hard Gold), including their pros\/cons, selection criteria, and solutions to 5 common soldering failures.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#primaryimage\",\"url\":\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes.jpg\",\"contentUrl\":\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes.jpg\",\"width\":600,\"height\":402,\"caption\":\"PCB Surface Finishes\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.topfastpcb.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"What is PCB Surface Finishes?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.topfastpcb.com\/#website\",\"url\":\"https:\/\/www.topfastpcb.com\/\",\"name\":\"Topfastpcb\",\"description\":\"Topfast Prime Choice for Global Electronics Manufacturing\",\"publisher\":{\"@id\":\"https:\/\/www.topfastpcb.com\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.topfastpcb.com\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.topfastpcb.com\/#organization\",\"name\":\"Topfastpcb\",\"url\":\"https:\/\/www.topfastpcb.com\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/www.topfastpcb.com\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/02\/cropped-topfast-logo.png\",\"contentUrl\":\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/02\/cropped-topfast-logo.png\",\"width\":144,\"height\":56,\"caption\":\"Topfastpcb\"},\"image\":{\"@id\":\"https:\/\/www.topfastpcb.com\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.topfastpcb.com\/#\/schema\/person\/39870874f1c329f3cd3693593dbdce3a\",\"name\":\"\u6258\u666e\u6cd5\u65af\u7279\",\"sameAs\":[\"http:\/\/www.topfastpcb.com\"],\"url\":\"https:\/\/www.topfastpcb.com\/fr\/blog\/author\/admin\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"What is PCB Surface Finishes? - Topfastpcb","description":"In-depth comparison of 7 PCB surface finish processes (HASL\/ENIG\/OSP\/Immersion Tin\/Immersion Silver\/ENEPIG\/Electrolytic Hard Gold), including their pros\/cons, selection criteria, and solutions to 5 common soldering failures.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.topfastpcb.com\/fr\/blog\/what-is-pcb-surface-finishes\/","og_locale":"fr_FR","og_type":"article","og_title":"What is PCB Surface Finishes? - Topfastpcb","og_description":"In-depth comparison of 7 PCB surface finish processes (HASL\/ENIG\/OSP\/Immersion Tin\/Immersion Silver\/ENEPIG\/Electrolytic Hard Gold), including their pros\/cons, selection criteria, and solutions to 5 common soldering failures.","og_url":"https:\/\/www.topfastpcb.com\/fr\/blog\/what-is-pcb-surface-finishes\/","og_site_name":"Topfastpcb","article_published_time":"2025-06-01T00:32:00+00:00","og_image":[{"width":600,"height":402,"url":"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes.jpg","type":"image\/jpeg"}],"author":"\u6258\u666e\u6cd5\u65af\u7279","twitter_card":"summary_large_image","twitter_misc":{"\u00c9crit par":"\u6258\u666e\u6cd5\u65af\u7279","Dur\u00e9e de lecture estim\u00e9e":"7 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#article","isPartOf":{"@id":"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/"},"author":{"name":"\u6258\u666e\u6cd5\u65af\u7279","@id":"https:\/\/www.topfastpcb.com\/#\/schema\/person\/39870874f1c329f3cd3693593dbdce3a"},"headline":"What is PCB Surface Finishes?","datePublished":"2025-06-01T00:32:00+00:00","mainEntityOfPage":{"@id":"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/"},"wordCount":1180,"publisher":{"@id":"https:\/\/www.topfastpcb.com\/#organization"},"image":{"@id":"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#primaryimage"},"thumbnailUrl":"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes.jpg","keywords":["PCB Surface Finishes"],"articleSection":["FAQ"],"inLanguage":"fr-FR"},{"@type":"WebPage","@id":"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/","url":"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/","name":"What is PCB Surface Finishes? - Topfastpcb","isPartOf":{"@id":"https:\/\/www.topfastpcb.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#primaryimage"},"image":{"@id":"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#primaryimage"},"thumbnailUrl":"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes.jpg","datePublished":"2025-06-01T00:32:00+00:00","description":"In-depth comparison of 7 PCB surface finish processes (HASL\/ENIG\/OSP\/Immersion Tin\/Immersion Silver\/ENEPIG\/Electrolytic Hard Gold), including their pros\/cons, selection criteria, and solutions to 5 common soldering failures.","breadcrumb":{"@id":"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#primaryimage","url":"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes.jpg","contentUrl":"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes.jpg","width":600,"height":402,"caption":"PCB Surface Finishes"},{"@type":"BreadcrumbList","@id":"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.topfastpcb.com\/"},{"@type":"ListItem","position":2,"name":"What is PCB Surface Finishes?"}]},{"@type":"WebSite","@id":"https:\/\/www.topfastpcb.com\/#website","url":"https:\/\/www.topfastpcb.com\/","name":"Topfastpcb","description":"Topfast Prime Choice for Global Electronics Manufacturing","publisher":{"@id":"https:\/\/www.topfastpcb.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.topfastpcb.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Organization","@id":"https:\/\/www.topfastpcb.com\/#organization","name":"Topfastpcb","url":"https:\/\/www.topfastpcb.com\/","logo":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.topfastpcb.com\/#\/schema\/logo\/image\/","url":"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/02\/cropped-topfast-logo.png","contentUrl":"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/02\/cropped-topfast-logo.png","width":144,"height":56,"caption":"Topfastpcb"},"image":{"@id":"https:\/\/www.topfastpcb.com\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/www.topfastpcb.com\/#\/schema\/person\/39870874f1c329f3cd3693593dbdce3a","name":"\u6258\u666e\u6cd5\u65af\u7279","sameAs":["http:\/\/www.topfastpcb.com"],"url":"https:\/\/www.topfastpcb.com\/fr\/blog\/author\/admin\/"}]}},"_links":{"self":[{"href":"https:\/\/www.topfastpcb.com\/fr\/wp-json\/wp\/v2\/posts\/2945","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.topfastpcb.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.topfastpcb.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.topfastpcb.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.topfastpcb.com\/fr\/wp-json\/wp\/v2\/comments?post=2945"}],"version-history":[{"count":3,"href":"https:\/\/www.topfastpcb.com\/fr\/wp-json\/wp\/v2\/posts\/2945\/revisions"}],"predecessor-version":[{"id":2953,"href":"https:\/\/www.topfastpcb.com\/fr\/wp-json\/wp\/v2\/posts\/2945\/revisions\/2953"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.topfastpcb.com\/fr\/wp-json\/wp\/v2\/media\/2947"}],"wp:attachment":[{"href":"https:\/\/www.topfastpcb.com\/fr\/wp-json\/wp\/v2\/media?parent=2945"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.topfastpcb.com\/fr\/wp-json\/wp\/v2\/categories?post=2945"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.topfastpcb.com\/fr\/wp-json\/wp\/v2\/tags?post=2945"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}