{"id":5148,"date":"2026-04-13T15:01:44","date_gmt":"2026-04-13T07:01:44","guid":{"rendered":"https:\/\/txjpcba.com\/?p=5148"},"modified":"2026-04-13T15:01:44","modified_gmt":"2026-04-13T07:01:44","slug":"quelles-sont-les-zones-qui-ne-doivent-pas-etre-recouvertes-sur-le-circuit-imprime","status":"publish","type":"post","link":"https:\/\/txjpcba.com\/fr\/quelles-sont-les-zones-qui-ne-doivent-pas-etre-recouvertes-sur-le-circuit-imprime\/","title":{"rendered":"Quelles sont les zones qui ne doivent pas \u00eatre recouvertes sur le PCB ?"},"content":{"rendered":"<h3 data-section-id=\"zecr6s\" data-start=\"0\" data-end=\"43\">Rev\u00eatement sur PCB<\/h3>\n<p data-start=\"45\" data-end=\"404\">Pendant <strong data-start=\"52\" data-end=\"73\">Rev\u00eatement conforme<\/strong> en <strong data-start=\"77\" data-end=\"93\">Assemblage du circuit imprim\u00e9<\/strong>, <strong data-start=\"95\" data-end=\"121\">Prototype d'assemblage de circuits imprim\u00e9s<\/strong>, et <strong data-start=\"127\" data-end=\"143\">Assemblage SMT<\/strong>, il est essentiel de d\u00e9finir <strong data-start=\"171\" data-end=\"189\">zones interdites d'acc\u00e8s<\/strong>-Il s'agit de zones qui doivent rester exemptes de rev\u00eatement pour garantir des performances \u00e9lectriques, une connectivit\u00e9 et une facilit\u00e9 d'entretien correctes. L'application d'un rev\u00eatement sur les mauvaises zones peut entra\u00eener un mauvais contact, des probl\u00e8mes de signal, voire une d\u00e9faillance totale du produit.<\/p>\n<figure id=\"attachment_5149\" aria-describedby=\"caption-attachment-5149\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-5149\" src=\"https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/04\/What-areas-should-not-be-coated-on-PCB.jpg\" alt=\"Quelles sont les zones qui ne doivent pas \u00eatre recouvertes sur le PCB ?\" width=\"800\" height=\"597\" srcset=\"https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/04\/What-areas-should-not-be-coated-on-PCB.jpg 800w, https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/04\/What-areas-should-not-be-coated-on-PCB-300x224.jpg 300w, https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/04\/What-areas-should-not-be-coated-on-PCB-768x573.jpg 768w, https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/04\/What-areas-should-not-be-coated-on-PCB-16x12.jpg 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-5149\" class=\"wp-caption-text\">Quelles sont les zones qui ne doivent pas \u00eatre recouvertes sur le PCB ?<\/figcaption><\/figure>\n<p data-start=\"406\" data-end=\"460\">Vous trouverez ci-dessous les domaines cl\u00e9s qui devraient <strong data-start=\"442\" data-end=\"449\">pas<\/strong> \u00eatre enduit :<\/p>\n<p data-start=\"462\" data-end=\"781\"><strong data-start=\"462\" data-end=\"493\">Connecteurs et broches de contact<\/strong><br data-start=\"493\" data-end=\"496\" \/>Tous les connecteurs, les doigts de bordure, les douilles et les tampons de contact doivent rester sans rev\u00eatement. Application <a href=\"https:\/\/txjpcba.com\/fr\/revetement-conforme\/\"><strong data-start=\"583\" data-end=\"604\">Rev\u00eatement conforme<\/strong><\/a> sur ces surfaces peut bloquer la conductivit\u00e9 \u00e9lectrique et emp\u00eacher un accouplement correct avec des c\u00e2bles ou des modules. Il s'agit de l'une des exigences les plus importantes en mati\u00e8re de masquage dans le domaine de la sant\u00e9. <strong data-start=\"764\" data-end=\"780\">Assemblage du circuit imprim\u00e9<\/strong>.<\/p>\n<p data-start=\"783\" data-end=\"1083\"><strong data-start=\"783\" data-end=\"825\">Points de test et interfaces de programmation<\/strong><br data-start=\"825\" data-end=\"828\" \/>Les plots d'essai, les points de sonde et les t\u00eates de programmation doivent \u00eatre exempts de rev\u00eatement pour permettre les essais \u00e9lectriques, le d\u00e9bogage et les mises \u00e0 jour des microprogrammes. En <a href=\"https:\/\/txjpcba.com\/fr\/assemblage-de-prototypes-de-circuits-imprimes\/\"><strong data-start=\"973\" data-end=\"999\">Prototype d'assemblage de circuits imprim\u00e9s<\/strong><\/a>, L'acc\u00e8s \u00e0 ces points est particuli\u00e8rement important pour la validation et le d\u00e9pannage.<\/p>\n<p data-start=\"1085\" data-end=\"1327\"><strong data-start=\"1085\" data-end=\"1123\">Interrupteurs et composants m\u00e9caniques<\/strong><br data-start=\"1123\" data-end=\"1126\" \/>Les boutons, les relais, les cavaliers et les autres pi\u00e8ces mobiles ne doivent pas \u00eatre enduits. Le rev\u00eatement peut interf\u00e9rer avec le fonctionnement m\u00e9canique ou faire coller les composants, r\u00e9duisant ainsi la fonctionnalit\u00e9 de l'appareil. <strong data-start=\"1301\" data-end=\"1317\">Assemblage SMT<\/strong> produits.<\/p>\n<p data-start=\"1329\" data-end=\"1612\"><strong data-start=\"1329\" data-end=\"1366\">Dissipateurs de chaleur et interfaces thermiques<\/strong><br data-start=\"1366\" data-end=\"1369\" \/>Les zones con\u00e7ues pour la dissipation de la chaleur, telles que les dissipateurs de chaleur, les coussinets thermiques ou les composants de puissance, doivent g\u00e9n\u00e9ralement rester sans rev\u00eatement ou utiliser des rev\u00eatements thermiques sp\u00e9cialis\u00e9s. Les rev\u00eatements standard peuvent agir comme des isolants thermiques, r\u00e9duisant ainsi l'efficacit\u00e9 du transfert de chaleur.<\/p>\n<p data-start=\"1614\" data-end=\"1917\"><strong data-start=\"1614\" data-end=\"1645\">Lacunes de s\u00e9curit\u00e9 en mati\u00e8re de haute tension<\/strong><br data-start=\"1645\" data-end=\"1648\" \/>Certaines zones \u00e0 haute tension peuvent n\u00e9cessiter un espacement contr\u00f4l\u00e9 pour des raisons de s\u00e9curit\u00e9 et de performance. Si le rev\u00eatement peut am\u00e9liorer l'isolation, une mauvaise application peut combler des lacunes ou pi\u00e9ger des contaminants, ce qui nuit \u00e0 la fiabilit\u00e9. Une conception minutieuse est n\u00e9cessaire lors de l'application du rev\u00eatement. <a href=\"https:\/\/txjpcba.com\/fr\/assemblage-de-circuits-imprimes\/\"><strong data-start=\"1900\" data-end=\"1916\">Assemblage du circuit imprim\u00e9<\/strong><\/a>.<\/p>\n<p data-start=\"1919\" data-end=\"2097\"><strong data-start=\"1919\" data-end=\"1959\">Points de mise \u00e0 la terre et zones de blindage<\/strong><br data-start=\"1959\" data-end=\"1962\" \/>Les zones de blindage m\u00e9tallique ou les contacts de mise \u00e0 la terre doivent rester expos\u00e9s pour assurer un blindage \u00e9lectromagn\u00e9tique et une mise \u00e0 la terre corrects.<\/p>\n<p data-start=\"2099\" data-end=\"2336\"><strong data-start=\"2099\" data-end=\"2151\">Connecteurs pour signaux \u00e0 haute fr\u00e9quence (zones RF)<\/strong><br data-start=\"2151\" data-end=\"2154\" \/>Dans les circuits RF, le rev\u00eatement peut modifier l'imp\u00e9dance ou les caract\u00e9ristiques du signal. Les zones sensibles telles que les antennes ou les connecteurs RF peuvent ne pas \u00eatre rev\u00eatues ou n\u00e9cessiter des mat\u00e9riaux sp\u00e9cialis\u00e9s.<\/p>\n<p data-start=\"2338\" data-end=\"2595\"><strong data-start=\"2338\" data-end=\"2376\">Composants optiques (DEL, capteurs)<\/strong><br data-start=\"2376\" data-end=\"2379\" \/>Les lentilles LED, les capteurs optiques et les \u00e9l\u00e9ments d'affichage ne doivent pas \u00eatre rev\u00eatus, car le rev\u00eatement peut bloquer ou d\u00e9former la transmission de la lumi\u00e8re. En <a href=\"https:\/\/txjpcba.com\/fr\/services-dassemblage-smt\/\"><strong data-start=\"2510\" data-end=\"2526\">Assemblage SMT<\/strong><\/a>, Le masquage de ces zones est essentiel pour maintenir les performances optiques.<\/p>\n<p data-start=\"2597\" data-end=\"2675\"><strong data-start=\"2597\" data-end=\"2627\">L'importance d'un bon masquage<\/strong><br data-start=\"2627\" data-end=\"2630\" \/>Le fait de ne pas prot\u00e9ger ces zones peut entra\u00eener :<\/p>\n<ul data-start=\"2676\" data-end=\"2813\">\n<li data-section-id=\"1maykgx\" data-start=\"2676\" data-end=\"2707\">Mauvaises connexions \u00e9lectriques<\/li>\n<li data-section-id=\"g3m918\" data-start=\"2708\" data-end=\"2744\">Difficult\u00e9s d'essai et de r\u00e9paration<\/li>\n<li data-section-id=\"h9gk9i\" data-start=\"2745\" data-end=\"2781\">D\u00e9faillance m\u00e9canique des composants<\/li>\n<li data-section-id=\"nrq7tr\" data-start=\"2782\" data-end=\"2813\">Performance thermique r\u00e9duite<\/li>\n<\/ul>\n<p data-start=\"2815\" data-end=\"2970\">En <strong data-start=\"2818\" data-end=\"2844\">Prototype d'assemblage de circuits imprim\u00e9s<\/strong>, Les ing\u00e9nieurs d\u00e9finissent g\u00e9n\u00e9ralement les zones de masquage au d\u00e9but de la phase de conception et les valident par des essais avant la production en s\u00e9rie.<\/p>\n<p data-start=\"2972\" data-end=\"2992\"><strong data-start=\"2972\" data-end=\"2990\">Meilleures pratiques<\/strong><\/p>\n<ul data-start=\"2993\" data-end=\"3186\">\n<li data-section-id=\"11850sk\" data-start=\"2993\" data-end=\"3040\">Marquer clairement les zones d'exclusion dans les dossiers de conception<\/li>\n<li data-section-id=\"1b0gpcv\" data-start=\"3041\" data-end=\"3086\">Utiliser des rubans de masquage, des bottes ou des masques liquides.<\/li>\n<li data-section-id=\"aiwt6\" data-start=\"3087\" data-end=\"3128\">Appliquer un rev\u00eatement s\u00e9lectif pour la pr\u00e9cision<\/li>\n<li data-section-id=\"1g1bg98\" data-start=\"3129\" data-end=\"3186\">Effectuer une inspection post-rev\u00eatement pour v\u00e9rifier la propret\u00e9<\/li>\n<\/ul>\n<p data-start=\"3188\" data-end=\"3464\">En conclusion, toutes les zones d'un PCB ne doivent pas \u00eatre rev\u00eatues. Il convient d'identifier et de prot\u00e9ger correctement les zones sensibles pendant le traitement. <strong data-start=\"3307\" data-end=\"3323\">Assemblage du circuit imprim\u00e9<\/strong>, <strong data-start=\"3325\" data-end=\"3341\">Assemblage SMT<\/strong>, et <strong data-start=\"3347\" data-end=\"3373\">Prototype d'assemblage de circuits imprim\u00e9s<\/strong> veiller \u00e0 ce que <strong data-start=\"3386\" data-end=\"3407\">Rev\u00eatement conforme<\/strong> am\u00e9liore la fiabilit\u00e9 sans compromettre la fonctionnalit\u00e9.<\/p>\n<div style=\"background: #f8f8f8; border: 1px solid #e5e5e5; padding: 25px; margin-top: 30px; border-radius: 6px;\">\n<div style=\"text-align: center;\">\n<h3 style=\"margin-bottom: 10px; font-size: 22px;\">Obtenir un devis pour un rev\u00eatement conforme<\/h3>\n<p style=\"font-size: 15px; color: #555; margin-bottom: 15px;\">Du prototype \u00e0 la production de masse, nous fournissons des services de rev\u00eatement conforme. Demandez votre devis maintenant.<br \/>\nEnvoyez-nous vos exigences et obtenez une r\u00e9ponse rapide de notre \u00e9quipe d'ing\u00e9nieurs.<\/p>\n<p style=\"font-size: 14px; color: #333; margin-bottom: 20px;\">\u2714 R\u00e9ponse dans les 24 heures \u2714 Soutien technique \u2714 Production en petite et grande s\u00e9rie<\/p>\n<\/div>\n<div style=\"text-align: left;\"><style id=\"wpforms-css-vars-2237\">\n\t\t\t\t#wpforms-2237 {\n\t\t\t\t--wpforms-field-size-input-height: 43px;\n--wpforms-field-size-input-spacing: 15px;\n--wpforms-field-size-font-size: 16px;\n--wpforms-field-size-line-height: 19px;\n--wpforms-field-size-padding-h: 14px;\n--wpforms-field-size-checkbox-size: 16px;\n--wpforms-field-size-sublabel-spacing: 5px;\n--wpforms-field-size-icon-size: 1;\n--wpforms-label-size-font-size: 16px;\n--wpforms-label-size-line-height: 19px;\n--wpforms-label-size-sublabel-font-size: 14px;\n--wpforms-label-size-sublabel-line-height: 17px;\n--wpforms-button-size-font-size: 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fichiers.<\/span>\n\t\t\t<\/div>\n<\/div>\n\n<input\n\t\ttype=\"text\"\n\t\tautocomplete=\"off\"\n\t\treadonly\n\t\tclass=\"dropzone-input\"\n\t\tstyle=\"position:absolute!important;clip:rect(0,0,0,0)!important;height:1px!important;width:1px!important;border:0!important;overflow:hidden!important;padding:0!important;margin:0!important;\"\n\t\tid=\"wpforms-2237-field_9\"\n\t\tname=\"wpforms_2237_9\" \t\tvalue=\"\">\n<div id=\"wpforms-2237-field_9-description\" class=\"wpforms-field-description\">Veuillez compresser tous les fichiers Gerber, les fichiers de forage et les nomenclatures dans un seul fichier .ZIP ou .RAR pour un traitement plus rapide.<\/div><\/div><div id=\"wpforms-2237-field_2-container\" class=\"wpforms-field wpforms-field-textarea\" data-field-type=\"textarea\" data-field-id=\"2\"><label class=\"wpforms-field-label\" for=\"wpforms-2237-field_2\">Message<\/label><textarea id=\"wpforms-2237-field_2\" class=\"wpforms-field-medium\" name=\"wpforms[fields][2]\" aria-errormessage=\"wpforms-2237-field_2-error\" aria-describedby=\"wpforms-2237-field_2-description\" ><\/textarea><div id=\"wpforms-2237-field_2-description\" class=\"wpforms-field-description\">\"Veuillez \u00e9num\u00e9rer les composants ou les zones qui ne doivent PAS \u00eatre rev\u00eatus (par exemple, les connecteurs, les points de test). 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