{"id":8077,"date":"2025-10-30T16:39:44","date_gmt":"2025-10-30T08:39:44","guid":{"rendered":"https:\/\/topfastpcba.com\/?p=8077"},"modified":"2025-10-30T16:39:50","modified_gmt":"2025-10-30T08:39:50","slug":"pcb-fundamentals","status":"publish","type":"post","link":"https:\/\/topfastpcba.com\/es\/pcb-fundamentals\/","title":{"rendered":"Fundamentos de PCB"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_75 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\">\u00cdndice<\/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:\/\/topfastpcba.com\/es\/pcb-fundamentals\/#1_Introduction_to_PCBs_and_Core_Components\" >1. Introducci\u00f3n a los PCB y los componentes principales<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/topfastpcba.com\/es\/pcb-fundamentals\/#2_PCB_Classification_System\" >2. Sistema de clasificaci\u00f3n de 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:\/\/topfastpcba.com\/es\/pcb-fundamentals\/#21_Classification_by_Substrate_Material\" >2.1 Clasificaci\u00f3n seg\u00fan el material del sustrato<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/topfastpcba.com\/es\/pcb-fundamentals\/#22_Classification_by_Structural_Characteristics\" >2.2 Clasificaci\u00f3n seg\u00fan caracter\u00edsticas estructurales<\/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:\/\/topfastpcba.com\/es\/pcb-fundamentals\/#3_In-Depth_Analysis_of_PCB_Substrate_Technology\" >3. An\u00e1lisis en profundidad de la tecnolog\u00eda de sustratos PCB<\/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:\/\/topfastpcba.com\/es\/pcb-fundamentals\/#31_Layer_Stack-up_Structure\" >3.1 Estructura de apilamiento de capas<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/topfastpcba.com\/es\/pcb-fundamentals\/#32_Via_Technologies\" >3.2 Via Technologies<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/topfastpcba.com\/es\/pcb-fundamentals\/#33_Key_Performance_Parameters\" >3.3 Par\u00e1metros clave de rendimiento<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/topfastpcba.com\/es\/pcb-fundamentals\/#4_Precision_PCB_Manufacturing_Process_Flow\" >4. Flujo del proceso de fabricaci\u00f3n de PCB de precisi\u00f3n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/topfastpcba.com\/es\/pcb-fundamentals\/#5_Comprehensive_Comparison_of_Surface_Finish_Treatments\" >5. Comparaci\u00f3n exhaustiva de los tratamientos de acabado superficial<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Introduction_to_PCBs_and_Core_Components\"><\/span>1. Introducci\u00f3n a los PCB y los componentes principales<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Circuitos impresos<\/strong> (PCB) son componentes fundamentales en la industria electr\u00f3nica. Sus funciones principales incluyen <strong>transmisi\u00f3n de se\u00f1ales<\/strong>, <strong>apoyo f\u00edsico<\/strong>, <strong>distribuci\u00f3n de energ\u00eda<\/strong>y <strong>gesti\u00f3n t\u00e9rmica<\/strong>. Una PCB comprende varios elementos especializados: el <strong>capa serigr\u00e1fica<\/strong> (Superposici\u00f3n) para la identificaci\u00f3n de componentes, <strong>acabados superficiales<\/strong> (como ENIG, HASL), <strong>v\u00edas<\/strong> para conexiones el\u00e9ctricas entre capas, <strong>Componentes de orificio pasante<\/strong> (PTH) y <strong>Dispositivos de montaje superficial<\/strong> (SMD), <strong>cobro de cobre<\/strong> (Pol\u00edgono), <strong>almohadillas t\u00e9rmicas de alivio<\/strong>, <strong>trazas de se\u00f1ales<\/strong> (Pista) y <strong>almohadillas<\/strong>, entre otras caracter\u00edsticas fundamentales.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_PCB_Classification_System\"><\/span>2. Sistema de clasificaci\u00f3n de PCB<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"21_Classification_by_Substrate_Material\"><\/span>2.1 Clasificaci\u00f3n seg\u00fan el material del sustrato<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><a href=\"https:\/\/topfastpcba.com\/es\/ceramic-pcb\/\"><strong>Sustratos cer\u00e1micos<\/strong>:<\/a> Utilizing materials like Alumina (Al\u2082O\u2083), Aluminum Nitride (AlN), or Silicon Carbide (SiC), these offer exceptional thermal conductivity and are designed for high-temperature environments and high-power applications.<\/p>\n\n\n\n<p><strong><a href=\"https:\/\/topfastpcba.com\/es\/metal-pcb\/\">PCB con n\u00facleo met\u00e1lico<\/a><\/strong> (MCPCB): Incluyen sustratos a base de aluminio y cobre, conocidos por su excelente disipaci\u00f3n del calor, ampliamente utilizados en circuitos de alta potencia e iluminaci\u00f3n LED.<\/p>\n\n\n\n<p><strong>Sustratos basados en papel<\/strong>: Como los grados FR-1 y FR-2, utilizan papel de fibra como refuerzo, impregnado con resina y laminado con l\u00e1mina de cobre, adecuado principalmente para placas de una o dos caras.<\/p>\n\n\n\n<p><strong>Sustratos compuestos<\/strong>: Combinar de forma innovadora las caracter\u00edsticas de m\u00faltiples materiales, por ejemplo, CEM-2 (resina epoxi con n\u00facleo de papel y superficies de tela de vidrio), para cumplir requisitos de rendimiento espec\u00edficos.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"22_Classification_by_Structural_Characteristics\"><\/span>2.2 Clasificaci\u00f3n seg\u00fan caracter\u00edsticas estructurales<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong><a href=\"https:\/\/topfastpcba.com\/es\/rigid-pcb-board\/\">PCB r\u00edgidos<\/a><\/strong>: Utilice sustratos r\u00edgidos no flexibles, incluyendo diversos tipos como FR-4 (epoxi de vidrio), sustratos basados en papel, compuestos, cer\u00e1micos y placas con n\u00facleo met\u00e1lico.<\/p>\n\n\n\n<p><a href=\"https:\/\/topfastpcba.com\/es\/flexible-pcb\/\"><strong>Placas de circuito impreso flexibles<\/strong> <\/a>(PCB flexibles): emplean sustratos aislantes flexibles, lo que permite doblarlos, enrollarlos y plegarlos, lo que resulta ideal para las limitaciones de espacio de los dispositivos electr\u00f3nicos port\u00e1tiles.<\/p>\n\n\n\n<p><strong><a href=\"https:\/\/topfastpcba.com\/es\/rigid-flex-pcb\/\">Placas de circuito impreso r\u00edgido-flexibles<\/a><\/strong>: Integra de forma inteligente zonas r\u00edgidas y zonas flexibles, ofreciendo tanto resistencia estructural como flexibilidad de instalaci\u00f3n.<\/p>\n\n\n\n<p><strong><a href=\"https:\/\/topfastpcba.com\/es\/hdi-pcb\/\">PCB de IDH<\/a><\/strong> (Interconexi\u00f3n de alta densidad): Utiliza tecnolog\u00eda de microv\u00edas y l\u00e1minas de cobre ultradelgadas para satisfacer las exigencias de miniaturizaci\u00f3n de los dispositivos electr\u00f3nicos. Las estructuras incluyen v\u00edas apiladas en dos pasos, v\u00edas escalonadas en dos pasos y HDI en un solo paso.<\/p>\n\n\n\n<p><strong>Sustratos IC<\/strong>: Dise\u00f1ado espec\u00edficamente para el encapsulado de chips, proporciona funciones cr\u00edticas como conexi\u00f3n el\u00e9ctrica, protecci\u00f3n f\u00edsica, soporte estructural y gesti\u00f3n t\u00e9rmica.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"402\" src=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/09\/PCB-layers-3.jpg\" alt=\"PCB\" class=\"wp-image-7958\" srcset=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/09\/PCB-layers-3.jpg 600w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/09\/PCB-layers-3-300x201.jpg 300w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/09\/PCB-layers-3-18x12.jpg 18w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/09\/PCB-layers-3-150x101.jpg 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_In-Depth_Analysis_of_PCB_Substrate_Technology\"><\/span>3. An\u00e1lisis en profundidad de la tecnolog\u00eda de sustratos PCB<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"31_Layer_Stack-up_Structure\"><\/span>3.1 Estructura de apilamiento de capas<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Las placas de circuito impreso modernas presentan un dise\u00f1o multicapa:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>N\u00facleo<\/strong>: Laminado compuesto por tela de fibra de vidrio y resina epoxi, revestido con cobre por ambos lados.<\/li>\n\n\n\n<li><strong>Preimpregnado<\/strong> (Preimpregnado): compuesto de tela de fibra de vidrio y resina parcialmente curada, responsable de unir las capas durante la laminaci\u00f3n.<\/li>\n\n\n\n<li><strong>L\u00e1mina de cobre<\/strong>: Divided into Electro-Deposited (ED) copper (preferred for rigid boards) and Rolled Annealed (RA) copper (used for flexible boards). Thickness is measured in ounces (OZ), e.g., 1 OZ (\u224835\u00b5m).<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"32_Via_Technologies\"><\/span>3.2 Via Technologies<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Las v\u00edas de interconexi\u00f3n de PCB se clasifican en tres tipos:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Viaje a trav\u00e9s del agujero<\/strong>: Pasa por todas las capas del circuito.<\/li>\n\n\n\n<li><strong>V\u00eda ciega<\/strong>: Conecta una capa externa con una o m\u00e1s capas internas, pero no atraviesa toda la placa.<\/li>\n\n\n\n<li><strong>Enterrado V\u00eda<\/strong>: Situado \u00edntegramente dentro de las capas internas, conectando dos o m\u00e1s capas internas sin llegar a las superficies externas.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"33_Key_Performance_Parameters\"><\/span>3.3 Par\u00e1metros clave de rendimiento<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>Par\u00e1metros t\u00e9rmicos<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Tg<\/strong> (Temperatura de transici\u00f3n v\u00edtrea): El punto cr\u00edtico en el que la resina pasa de un estado r\u00edgido a uno m\u00e1s blando, lo que afecta directamente a la resistencia al calor del sustrato.<\/li>\n\n\n\n<li><strong>Td<\/strong> (Temperatura de descomposici\u00f3n): Temperatura a la que la resina pierde el 5 % de su masa debido a la degradaci\u00f3n t\u00e9rmica.<\/li>\n\n\n\n<li><strong>CTE<\/strong> (Coefficient of Thermal Expansion): Determines dimensional stability under temperature variations. Typically X\/Y: 16-18 ppm\/\u00b0C, Z: 40-60 ppm\/\u00b0C.<\/li>\n<\/ul>\n\n\n\n<p><strong>Par\u00e1metros el\u00e9ctricos<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Dk<\/strong> (Dielectric Constant): Influences signal propagation speed and characteristic impedance. A lower Dk generally allows faster signal speed (V = C\/\u221aDk).<\/li>\n\n\n\n<li><strong>Df<\/strong> (Factor de disipaci\u00f3n): Afecta a la integridad y calidad de la se\u00f1al; un Df m\u00e1s bajo significa menos p\u00e9rdida de se\u00f1al.<\/li>\n\n\n\n<li>Resistividad superficial\/volum\u00e9trica: mide el rendimiento conductivo.<\/li>\n<\/ul>\n\n\n\n<p><strong>Par\u00e1metros mec\u00e1nicos<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Resistencia a la flexi\u00f3n y resistencia al desprendimiento<\/li>\n\n\n\n<li>Absorci\u00f3n de agua: afecta a la estabilidad y fiabilidad del sustrato. La humedad puede aumentar el Dk y el riesgo de delaminaci\u00f3n (\u00abpopcorning\u00bb).<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Precision_PCB_Manufacturing_Process_Flow\"><\/span>4. Flujo del proceso de fabricaci\u00f3n de PCB de precisi\u00f3n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>La fabricaci\u00f3n de PCB sigue una secuencia estricta:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Imagen de la capa interna<\/strong> \u2192 2. <strong>Laminado fotorresistente<\/strong> \u2192 3. <strong>Exposici\u00f3n<\/strong> \u2192 4. <strong>Desarrollo<\/strong> \u2192 5. <strong>Grabado<\/strong> \u2192 6. <strong>Resistencia de tira<\/strong> \u2192 7. <strong>Apilamiento de capas<\/strong> \u2192 8. <strong>Laminaci\u00f3n<\/strong> \u2192 9. <strong>Perforaci\u00f3n<\/strong> \u2192 10. <strong>Recubrimiento (PTH)<\/strong> \u2192 11. <strong>Laminado resistente de capa exterior<\/strong> \u2192 12. <strong>Exposici\u00f3n<\/strong> \u2192 13. <strong>Desarrollo<\/strong> \u2192 14. <strong>Recubrimiento de patrones (Cu\/Sn)<\/strong> \u2192 15. <strong>Resistencia de tira<\/strong> \u2192 16. <strong>Grabado<\/strong> \u2192 17. <strong>Tira de hojalata<\/strong> \u2192 18. <strong>Serigraf\u00eda\/Impresi\u00f3n de leyendas<\/strong> \u2192 19. <strong>Acabado superficial<\/strong><\/li>\n<\/ol>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"402\" src=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/10\/PCB-Manufacturing-Process.jpg\" alt=\"Proceso de fabricaci\u00f3n de PCB\" class=\"wp-image-8078\" srcset=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/10\/PCB-Manufacturing-Process.jpg 600w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/10\/PCB-Manufacturing-Process-300x201.jpg 300w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/10\/PCB-Manufacturing-Process-18x12.jpg 18w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/10\/PCB-Manufacturing-Process-150x101.jpg 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Comprehensive_Comparison_of_Surface_Finish_Treatments\"><\/span>5. Comparaci\u00f3n exhaustiva de los tratamientos de acabado superficial<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Acabado superficial<\/th><th>Caracter\u00edsticas y ventajas principales<\/th><th>Limitaciones \/ Retos<\/th><th>Nivel de costes<\/th><th>Thickness Range (\u00b5m)<\/th><th>Vida \u00fatil<\/th><\/tr><\/thead><tbody><tr><td><strong>HASL (sin plomo)<\/strong><\/td><td>Adecuado para almohadillas grandes, espaciado amplio<\/td><td>No es ideal para HDI; alta temperatura; superficie irregular.<\/td><td>Medio-alto<\/td><td>2-5 (en la almohadilla)<\/td><td>12 meses<\/td><\/tr><tr><td><strong>HASL (a base de plomo)<\/strong><\/td><td>Excelente resistencia mec\u00e1nica<\/td><td>Preocupaci\u00f3n medioambiental (contenido en Pb)<\/td><td>Medio-alto<\/td><td>2-5 (en la almohadilla)<\/td><td>12 meses<\/td><\/tr><tr><td><strong>OSP<\/strong><\/td><td>Proceso sencillo, bajo coste.<\/td><td>No apto para m\u00faltiples reflujos; inspecci\u00f3n dif\u00edcil.<\/td><td>M\u00e1s bajo<\/td><td>0.1 &#8211; 0.5<\/td><td>6 meses<\/td><\/tr><tr><td><strong>ENIG<\/strong> (N\u00edquel qu\u00edmico\/Oro por inmersi\u00f3n)<\/td><td>Soldadura fiable, superficie plana, buena resistencia a la corrosi\u00f3n.<\/td><td>Potencial de \u00abBlack Pad\u00bb (corrosi\u00f3n del n\u00edquel), \u00abGold Embrittlement\u00bb (fragilidad del oro)<\/td><td>Alta<\/td><td>Ni: 3-5 \/ Au: 0,03-0,08<\/td><td>12 meses<\/td><\/tr><tr><td><strong>ENEPIG<\/strong> (N\u00edquel qu\u00edmico\/paladio qu\u00edmico\/oro por inmersi\u00f3n)<\/td><td>Aplicaciones de alta gama, resistencia superior a la corrosi\u00f3n, apto para soldadura por hilo.<\/td><td>Control complejo del proceso, posibilidad de manchas negras\/decoloraci\u00f3n.<\/td><td>Alta<\/td><td>Ni: 2-5 \/ Pd: 0,05-0,15 \/ Au: 0,05-0,15<\/td><td>6 meses<\/td><\/tr><tr><td><strong>Plata de inmersi\u00f3n (ImAg)<\/strong><\/td><td>Superficie plana, adecuada para m\u00faltiples reflujos.<\/td><td>Se empa\u00f1a f\u00e1cilmente, requiere condiciones de almacenamiento estrictas.<\/td><td>Medio<\/td><td>0.1 &#8211; 0.5<\/td><td>12 meses<\/td><\/tr><tr><td><strong>Lata de inmersi\u00f3n (ImSn)<\/strong><\/td><td>Buena planitud, soldabilidad<\/td><td>Riesgo de formaci\u00f3n de bigotes de esta\u00f1o, mala resistencia al envejecimiento t\u00e9rmico.<\/td><td>Low<\/td><td>0.8 &#8211; 1.2<\/td><td>6 meses<\/td><\/tr><tr><td><strong>Ni\/Au electrol\u00edtico<\/strong> (Oro suave)<\/td><td>Excelente resistencia al desgaste, fiabilidad de contacto.<\/td><td>Alto consumo de oro, posibles problemas de adhesi\u00f3n de la m\u00e1scara de soldadura sobre el oro.<\/td><td>M\u00e1s alto<\/td><td>Ni: 3-5 \/ Au: \u22650.05 (selective)<\/td><td>12 meses<\/td><\/tr><tr><td><strong>Oro duro electrol\u00edtico<\/strong><\/td><td>Resistencia extrema al desgaste (por ejemplo, para los dedos).<\/td><td>Mayor coste, proceso m\u00e1s complejo<\/td><td>M\u00e1s alto<\/td><td>0,3 &#8211; 3,0 (al contacto)<\/td><td>12 meses<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>El sistema de conocimientos b\u00e1sicos sobre placas de circuito impreso (PCB) ofrece una cobertura completa, desde conceptos fundamentales hasta tecnolog\u00edas avanzadas. El contenido incluye clasificaciones detalladas de PCB por sustrato y estructura, interpretaci\u00f3n de indicadores t\u00e9cnicos clave, como los valores Tg y los par\u00e1metros Dk\/Df de las placas, an\u00e1lisis paso a paso de los procesos de fabricaci\u00f3n de placas multicapa y an\u00e1lisis comparativos en profundidad de diversas t\u00e9cnicas de tratamiento de superficies. Este recurso permite tomar decisiones informadas sobre la selecci\u00f3n, el dise\u00f1o y el control de calidad de las PCB.<\/p>","protected":false},"author":2,"featured_media":6761,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[52,155],"class_list":["post-8077","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-pcb","tag-pcb-fundamentals"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>PCB Fundamentals - Topfastpcba<\/title>\n<meta name=\"description\" content=\"PCB Fundamentals covers printed circuit board classification, substrate parameters, manufacturing processes, and surface treatment techniques. 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