{"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":"que-zonas-no-deben-recubrirse-en-pcb","status":"publish","type":"post","link":"https:\/\/txjpcba.com\/es\/que-zonas-no-deben-recubrirse-en-pcb\/","title":{"rendered":"\u00bfQu\u00e9 zonas no deben recubrirse en la placa de circuito impreso?"},"content":{"rendered":"<h3 data-section-id=\"zecr6s\" data-start=\"0\" data-end=\"43\">Recubierto en PCB<\/h3>\n<p data-start=\"45\" data-end=\"404\">En <strong data-start=\"52\" data-end=\"73\">Revestimiento conforme<\/strong> en <strong data-start=\"77\" data-end=\"93\">Montaje de PCB<\/strong>, <strong data-start=\"95\" data-end=\"121\">Montaje de prototipos de PCB<\/strong>, y <strong data-start=\"127\" data-end=\"143\">Montaje SMT<\/strong>, es esencial definir <strong data-start=\"171\" data-end=\"189\">zonas de exclusi\u00f3n<\/strong>-regiones que deben permanecer libres de revestimiento para garantizar un rendimiento el\u00e9ctrico, una conectividad y un mantenimiento adecuados. Recubrir las zonas equivocadas puede provocar un contacto deficiente, problemas de se\u00f1al o incluso el fallo completo del producto.<\/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=\"\u00bfQu\u00e9 zonas no deben recubrirse en los 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\">\u00bfQu\u00e9 zonas no deben recubrirse en los PCB?<\/figcaption><\/figure>\n<p data-start=\"406\" data-end=\"460\">A continuaci\u00f3n se indican las \u00e1reas clave que deben <strong data-start=\"442\" data-end=\"449\">no<\/strong> estar recubierto:<\/p>\n<p data-start=\"462\" data-end=\"781\"><strong data-start=\"462\" data-end=\"493\">Conectores y clavijas de contacto<\/strong><br data-start=\"493\" data-end=\"496\" \/>Todos los conectores, dedos de borde, z\u00f3calos y almohadillas de contacto deben permanecer sin recubrimiento. Aplicaci\u00f3n de <a href=\"https:\/\/txjpcba.com\/es\/revestimiento-de-conformacion\/\"><strong data-start=\"583\" data-end=\"604\">Revestimiento conforme<\/strong><\/a> en estas superficies puede bloquear la conductividad el\u00e9ctrica e impedir un acoplamiento adecuado con cables o m\u00f3dulos. Este es uno de los requisitos de enmascaramiento m\u00e1s cr\u00edticos en <strong data-start=\"764\" data-end=\"780\">Montaje de PCB<\/strong>.<\/p>\n<p data-start=\"783\" data-end=\"1083\"><strong data-start=\"783\" data-end=\"825\">Puntos de prueba e interfaces de programaci\u00f3n<\/strong><br data-start=\"825\" data-end=\"828\" \/>Las almohadillas de prueba, los puntos de sonda y los cabezales de programaci\u00f3n deben mantenerse libres de revestimiento para permitir las pruebas el\u00e9ctricas, la depuraci\u00f3n y las actualizaciones de firmware. En <a href=\"https:\/\/txjpcba.com\/es\/montaje-de-prototipos-de-pcb\/\"><strong data-start=\"973\" data-end=\"999\">Montaje de prototipos de PCB<\/strong><\/a>, El acceso a estos puntos es especialmente importante para la validaci\u00f3n y la resoluci\u00f3n de problemas.<\/p>\n<p data-start=\"1085\" data-end=\"1327\"><strong data-start=\"1085\" data-end=\"1123\">Interruptores y componentes mec\u00e1nicos<\/strong><br data-start=\"1123\" data-end=\"1126\" \/>Los botones, rel\u00e9s, puentes y otras piezas m\u00f3viles no deben recubrirse. El recubrimiento puede interferir con el funcionamiento mec\u00e1nico o hacer que los componentes se peguen, reduciendo la funcionalidad en <strong data-start=\"1301\" data-end=\"1317\">Montaje SMT<\/strong> productos.<\/p>\n<p data-start=\"1329\" data-end=\"1612\"><strong data-start=\"1329\" data-end=\"1366\">Disipadores t\u00e9rmicos e interfaces t\u00e9rmicas<\/strong><br data-start=\"1366\" data-end=\"1369\" \/>Las zonas dise\u00f1adas para la disipaci\u00f3n de calor, como los disipadores de calor, las almohadillas t\u00e9rmicas o los componentes de potencia, deben permanecer sin recubrimiento o utilizar recubrimientos t\u00e9rmicos especializados. Los recubrimientos est\u00e1ndar pueden actuar como aislantes t\u00e9rmicos, reduciendo la eficiencia de la transferencia de calor.<\/p>\n<p data-start=\"1614\" data-end=\"1917\"><strong data-start=\"1614\" data-end=\"1645\">Huecos libres de alta tensi\u00f3n<\/strong><br data-start=\"1645\" data-end=\"1648\" \/>Determinadas zonas de alta tensi\u00f3n pueden requerir un espaciado controlado por motivos de seguridad y rendimiento. Aunque el revestimiento puede mejorar el aislamiento, una aplicaci\u00f3n incorrecta puede tapar huecos o atrapar contaminantes, afectando a la fiabilidad. Es necesario tener en cuenta el dise\u00f1o durante <a href=\"https:\/\/txjpcba.com\/es\/montaje-de-pcb\/\"><strong data-start=\"1900\" data-end=\"1916\">Montaje de PCB<\/strong><\/a>.<\/p>\n<p data-start=\"1919\" data-end=\"2097\"><strong data-start=\"1919\" data-end=\"1959\">Puntos de conexi\u00f3n a tierra y zonas de apantallamiento<\/strong><br data-start=\"1959\" data-end=\"1962\" \/>Las zonas de apantallamiento met\u00e1lico o los contactos de puesta a tierra deben permanecer expuestos para garantizar un apantallamiento electromagn\u00e9tico y un rendimiento de puesta a tierra adecuados.<\/p>\n<p data-start=\"2099\" data-end=\"2336\"><strong data-start=\"2099\" data-end=\"2151\">Conectores para se\u00f1ales de alta frecuencia (zonas RF)<\/strong><br data-start=\"2151\" data-end=\"2154\" \/>En los circuitos de RF, el revestimiento puede alterar la impedancia o las caracter\u00edsticas de la se\u00f1al. Las zonas sensibles, como las antenas o los conectores de RF, pueden tener que permanecer sin revestimiento o requerir materiales especializados.<\/p>\n<p data-start=\"2338\" data-end=\"2595\"><strong data-start=\"2338\" data-end=\"2376\">Componentes \u00f3pticos (LED, sensores)<\/strong><br data-start=\"2376\" data-end=\"2379\" \/>Las lentes LED, los sensores \u00f3pticos y los elementos de visualizaci\u00f3n no deben estar recubiertos, ya que el recubrimiento puede bloquear o distorsionar la transmisi\u00f3n de la luz. En <a href=\"https:\/\/txjpcba.com\/es\/servicios-de-montaje-de-smt\/\"><strong data-start=\"2510\" data-end=\"2526\">Montaje SMT<\/strong><\/a>, El enmascaramiento de estas zonas es crucial para mantener el rendimiento \u00f3ptico.<\/p>\n<p data-start=\"2597\" data-end=\"2675\"><strong data-start=\"2597\" data-end=\"2627\">Por qu\u00e9 es importante un enmascaramiento adecuado<\/strong><br data-start=\"2627\" data-end=\"2630\" \/>No proteger estas zonas puede provocar:<\/p>\n<ul data-start=\"2676\" data-end=\"2813\">\n<li data-section-id=\"1maykgx\" data-start=\"2676\" data-end=\"2707\">Conexiones el\u00e9ctricas deficientes<\/li>\n<li data-section-id=\"g3m918\" data-start=\"2708\" data-end=\"2744\">Dificultad de comprobaci\u00f3n y reparaci\u00f3n<\/li>\n<li data-section-id=\"h9gk9i\" data-start=\"2745\" data-end=\"2781\">Fallo mec\u00e1nico de los componentes<\/li>\n<li data-section-id=\"nrq7tr\" data-start=\"2782\" data-end=\"2813\">Reducci\u00f3n del rendimiento t\u00e9rmico<\/li>\n<\/ul>\n<p data-start=\"2815\" data-end=\"2970\">En <strong data-start=\"2818\" data-end=\"2844\">Montaje de prototipos de PCB<\/strong>, Por lo general, los ingenieros definen las zonas de enmascaramiento al principio de la fase de dise\u00f1o y las validan mediante pruebas antes de la producci\u00f3n en serie.<\/p>\n<p data-start=\"2972\" data-end=\"2992\"><strong data-start=\"2972\" data-end=\"2990\">Buenas pr\u00e1cticas<\/strong><\/p>\n<ul data-start=\"2993\" data-end=\"3186\">\n<li data-section-id=\"11850sk\" data-start=\"2993\" data-end=\"3040\">Marque claramente las zonas de exclusi\u00f3n en los archivos de dise\u00f1o<\/li>\n<li data-section-id=\"1b0gpcv\" data-start=\"3041\" data-end=\"3086\">Utilizar cintas de enmascarar, botas o m\u00e1scaras l\u00edquidas<\/li>\n<li data-section-id=\"aiwt6\" data-start=\"3087\" data-end=\"3128\">Aplique un revestimiento selectivo para mayor precisi\u00f3n<\/li>\n<li data-section-id=\"1g1bg98\" data-start=\"3129\" data-end=\"3186\">Realizar una inspecci\u00f3n posterior al revestimiento para verificar la limpieza<\/li>\n<\/ul>\n<p data-start=\"3188\" data-end=\"3464\">En conclusi\u00f3n, no todas las zonas de un PCB deben revestirse. La correcta identificaci\u00f3n y protecci\u00f3n de las zonas sensibles durante <strong data-start=\"3307\" data-end=\"3323\">Montaje de PCB<\/strong>, <strong data-start=\"3325\" data-end=\"3341\">Montaje SMT<\/strong>, y <strong data-start=\"3347\" data-end=\"3373\">Montaje de prototipos de PCB<\/strong> garantizar que <strong data-start=\"3386\" data-end=\"3407\">Revestimiento conforme<\/strong> mejora la fiabilidad sin comprometer la funcionalidad.<\/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;\">Obtenga un presupuesto de revestimiento de conformaci\u00f3n<\/h3>\n<p style=\"font-size: 15px; color: #555; margin-bottom: 15px;\">Desde el prototipo hasta la producci\u00f3n en serie, ofrecemos servicios de revestimiento de conformaci\u00f3n. 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