{"id":6047,"date":"2026-08-07T09:00:00","date_gmt":"2026-08-07T01:00:00","guid":{"rendered":"https:\/\/www.topfastpcb.com\/?p=6047"},"modified":"2026-08-04T22:42:54","modified_gmt":"2026-08-04T14:42:54","slug":"navigating-rigid-flex-pcb-design-rules","status":"publish","type":"post","link":"https:\/\/www.topfastpcb.com\/pt\/blog\/navigating-rigid-flex-pcb-design-rules\/","title":{"rendered":"Como lidar com as regras de conce\u00e7\u00e3o de placas de circuito impresso r\u00edgido-flex\u00edveis para obter a m\u00e1xima fiabilidade mec\u00e2nica"},"content":{"rendered":"<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\">\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:\/\/www.topfastpcb.com\/pt\/blog\/navigating-rigid-flex-pcb-design-rules\/#The_Intersection_of_Electronics_and_Mechanics\" >A interse\u00e7\u00e3o entre a eletr\u00f3nica e a mec\u00e2nica<\/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\/pt\/blog\/navigating-rigid-flex-pcb-design-rules\/#Understanding_the_Rigid-Flex_Architecture_and_Materials\" >Compreender a arquitetura e os materiais dos circuitos r\u00edgido-flex\u00edveis<\/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\/pt\/blog\/navigating-rigid-flex-pcb-design-rules\/#The_Core_Materials\" >Os materiais do n\u00facleo<\/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\/pt\/blog\/navigating-rigid-flex-pcb-design-rules\/#The_Critical_Transition_Zone\" >A Zona de Transi\u00e7\u00e3o Cr\u00edtica<\/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\/pt\/blog\/navigating-rigid-flex-pcb-design-rules\/#Dynamic_vs_Static_Flexing\" >Flex\u00e3o din\u00e2mica vs. flex\u00e3o est\u00e1tica<\/a><\/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\/pt\/blog\/navigating-rigid-flex-pcb-design-rules\/#How_to_Design_for_Rigid-Flex_Critical_Design_Rules\" >Como projetar circuitos r\u00edgido-flex\u00edveis (regras cr\u00edticas de projeto)<\/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\/pt\/blog\/navigating-rigid-flex-pcb-design-rules\/#Advanced_Considerations_High-Speed_and_HDI\" >Considera\u00e7\u00f5es avan\u00e7adas: Alta velocidade e HDI<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.topfastpcb.com\/pt\/blog\/navigating-rigid-flex-pcb-design-rules\/#Frequently_Asked_Questions_FAQ\" >Perguntas frequentes (FAQ)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.topfastpcb.com\/pt\/blog\/navigating-rigid-flex-pcb-design-rules\/#Conclusion\" >Conclus\u00e3o<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"The_Intersection_of_Electronics_and_Mechanics\"><\/span>A interse\u00e7\u00e3o entre a eletr\u00f3nica e a mec\u00e2nica<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>As placas de circuito impresso r\u00edgidas tradicionais s\u00e3o est\u00e1ticas; uma vez montadas, n\u00e3o se movem. Mas o que acontece quando os seus componentes eletr\u00f3nicos t\u00eam de se dobrar para caber num min\u00fasculo dispositivo m\u00e9dico vest\u00edvel, torcer-se no interior de um bra\u00e7o rob\u00f3tico ou suportar as vibra\u00e7\u00f5es constantes de um motor aeroespacial? Recorre-se \u00e0 tecnologia Rigid-Flex.<\/p>\n<p>As placas r\u00edgido-flex\u00edveis combinam a estabilidade do FR4 padr\u00e3o com a versatilidade din\u00e2mica dos circuitos flex\u00edveis de poliimida (PI). No entanto, a sua conce\u00e7\u00e3o \u00e9 notoriamente dif\u00edcil, porque j\u00e1 n\u00e3o se \u00e9 apenas um engenheiro el\u00e9trico \u2014 passa-se a ser um engenheiro mec\u00e2nico. Neste artigo, iremos analisar os aspetos essenciais <strong>regras de conce\u00e7\u00e3o de placas de circuito impresso r\u00edgido-flex\u00edveis<\/strong> necess\u00e1rio para evitar fissuras nas pistas, delamina\u00e7\u00e3o e falhas catastr\u00f3ficas em condi\u00e7\u00f5es reais de utiliza\u00e7\u00e3o, garantindo que o seu projeto cumpra o ciclo de vida previsto.<\/p>\n<div style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/Navigating-Rigid-Flex-PCB-Design-Rules.jpg\" alt=\"Como lidar com as regras de conce\u00e7\u00e3o de placas de circuito impresso r\u00edgido-flex\u00edveis\" width=\"600\" height=\"400\" class=\"aligncenter size-full wp-image-6300\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/Navigating-Rigid-Flex-PCB-Design-Rules.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/Navigating-Rigid-Flex-PCB-Design-Rules-300x200.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/Navigating-Rigid-Flex-PCB-Design-Rules-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Understanding_the_Rigid-Flex_Architecture_and_Materials\"><\/span>Compreender a arquitetura e os materiais dos circuitos r\u00edgido-flex\u00edveis<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Uma placa r\u00edgida-flex\u00edvel t\u00edpica n\u00e3o consiste simplesmente em duas placas r\u00edgidas ligadas por um cabo de fita. As camadas flex\u00edveis de poliimida est\u00e3o integradas diretamente na estrutura das sec\u00e7\u00f5es r\u00edgidas.<\/p>\n<div style=\"text-align: center;\"><\/div>\n<h3><span class=\"ez-toc-section\" id=\"The_Core_Materials\"><\/span>Os materiais do n\u00facleo<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Poliimida (PI)<\/strong>: A espinha dorsal da sec\u00e7\u00e3o flex\u00edvel. O PI possui uma incr\u00edvel resist\u00eancia \u00e0 tra\u00e7\u00e3o, estabilidade t\u00e9rmica (suporta a soldadura por refluxo) e resist\u00eancia qu\u00edmica.<\/li>\n<li><strong>Cobre laminado recozido (RA)<\/strong>: Para flex\u00f5es din\u00e2micas, o cobre RA \u00e9 prefer\u00edvel ao cobre eletrodepositado (ED). A sua estrutura de gr\u00e3o horizontal permite que seja dobrado milh\u00f5es de vezes sem se partir.<\/li>\n<li><strong>Camada de cobertura vs. m\u00e1scara de solda<\/strong>: N\u00e3o se deve utilizar uma m\u00e1scara de solda l\u00edquida fotoimagem\u00e1vel (LPI) padr\u00e3o na sec\u00e7\u00e3o flex\u00edvel; esta rachar\u00e1 instantaneamente. Em vez disso, \u00e9 laminada uma camada de cobertura flex\u00edvel de poliimida sobre os tra\u00e7os, para prote\u00e7\u00e3o.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"The_Critical_Transition_Zone\"><\/span>A Zona de Transi\u00e7\u00e3o Cr\u00edtica<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A \u00e1rea mais vulner\u00e1vel de qualquer projeto r\u00edgido-flex\u00edvel \u00e9 a <strong>Zona de Transi\u00e7\u00e3o<\/strong>\u2014a linha exata onde o material r\u00edgido FR4 termina e a poliimida flex\u00edvel come\u00e7a. Esta jun\u00e7\u00e3o funciona como um importante concentrador de tens\u00f5es. Se uma placa vier a falhar mecanicamente, em 90% dos casos, a falha ocorre precisamente na zona de transi\u00e7\u00e3o.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Dynamic_vs_Static_Flexing\"><\/span>Flex\u00e3o din\u00e2mica vs. flex\u00e3o est\u00e1tica<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Antes do encaminhamento, \u00e9 necess\u00e1rio definir o tipo de aplica\u00e7\u00e3o:<br \/>* <strong>Est\u00e1tico (dobrar para instalar)<\/strong>: A placa \u00e9 dobrada uma vez durante a montagem para caber na caixa e raramente volta a mover-se. As regras neste caso s\u00e3o um pouco mais flex\u00edveis.<br \/>* <strong>Din\u00e2mico<\/strong>: A placa ir\u00e1 flexionar constantemente ao longo da sua vida \u00fatil (por exemplo, a dobradi\u00e7a de um computador port\u00e1til ou um atuador rob\u00f3tico). As regras de conce\u00e7\u00e3o devem ser rigorosamente aplicadas para que a placa resista a milh\u00f5es de ciclos de flex\u00e3o.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_to_Design_for_Rigid-Flex_Critical_Design_Rules\"><\/span>Como projetar circuitos r\u00edgido-flex\u00edveis (regras cr\u00edticas de projeto)<span class=\"ez-toc-section-end\"><\/span><\/h2><div class=\"schema-how-to wp-block-yoast-how-to-block\"><p class=\"schema-how-to-description\">Siga estas regras de engenharia.<\/p> <ol class=\"schema-how-to-steps\"><li class=\"schema-how-to-step\" id=\"how-to-step-1\"><strong class=\"schema-how-to-step-name\">Calcular o raio m\u00ednimo de curvatura<\/strong> <p class=\"schema-how-to-step-text\">Nunca dobre um circuito flex\u00edvel como se fosse uma folha de papel. O raio m\u00ednimo de curvatura determina at\u00e9 que ponto \u00e9 poss\u00edvel dobrar a placa sem partir o cobre.<br\/>Flexibilidade din\u00e2mica de uma ou duas faces: O raio de curvatura deve ser de 10 a 20 vezes a espessura total da sec\u00e7\u00e3o flex\u00edvel.<br\/>Flexibilidade est\u00e1tica: O raio de curvatura pode atingir 10 vezes a espessura. <br\/>(Exemplo: Se a sua sec\u00e7\u00e3o flex\u00edvel tiver 0,2 mm de espessura, o seu raio de curvatura din\u00e2mico m\u00ednimo absoluto \u00e9 de 2,0 mm a 4,0 mm).<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-2\"><strong class=\"schema-how-to-step-name\">Proteger a zona de transi\u00e7\u00e3o<\/strong> <p class=\"schema-how-to-step-text\">Nunca coloque vias, orif\u00edcios metalizados ou componentes de montagem em superf\u00edcie a uma dist\u00e2ncia inferior a 0,1 polegadas (2,54 mm) da zona de transi\u00e7\u00e3o. A tens\u00e3o mec\u00e2nica neste limite ir\u00e1 rasgar as vias e partir as juntas de solda dos componentes. Os fabricantes costumam aplicar uma camada de ep\u00f3xi ou silicone (al\u00edvio de tens\u00e3o) nesta jun\u00e7\u00e3o.<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-3\"><strong class=\"schema-how-to-step-name\">Utilizar \u00abTeardrops\u00bb e \u00abRadiused Traces\u00bb<\/strong> <p class=\"schema-how-to-step-text\">Um canto de 90 graus numa pista constitui um ponto de concentra\u00e7\u00e3o de tens\u00f5es. Quando a placa se flexiona, o cobre racha exatamente no canto interior agudo. Utilize sempre arcos suaves e amplos para tra\u00e7ar as pistas na zona de flex\u00e3o. Al\u00e9m disso, adicione formas em l\u00e1grima a todas as liga\u00e7\u00f5es de vias e pads para refor\u00e7ar a jun\u00e7\u00e3o do cobre no ponto em que este se encontra com o anel anular.<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-4\"><strong class=\"schema-how-to-step-name\">Deslocar os tra\u00e7os (circuito flex\u00edvel de dupla face)<\/strong> <p class=\"schema-how-to-step-text\">Se tiver tra\u00e7os de cobre tanto na parte superior como na parte inferior do material flex\u00edvel, **n\u00e3o os fa\u00e7a passar diretamente uns por cima dos outros**. Isso cria rigidez localizada (conhecida como \u00abefeito viga em I\u00bb) e aumenta o risco de fratura. Em vez disso, alterne os tra\u00e7os de forma a que se intercalem, distribuindo a tens\u00e3o de maneira uniforme.<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-5\"><strong class=\"schema-how-to-step-name\">Utilizar preenchimentos de cobre com hachuras cruzadas<\/strong> <p class=\"schema-how-to-step-text\">Os planos de terra em cobre maci\u00e7o tornam a \u00e1rea flex\u00edvel incrivelmente r\u00edgida e propensa a fissuras. Substitua as camadas cont\u00ednuas de cobre maci\u00e7o por um padr\u00e3o de grelha hachurada ou em malha nas regi\u00f5es flex\u00edveis. Uma propor\u00e7\u00e3o t\u00edpica \u00e9 uma pista de 0,2 mm com uma janela de 0,4 mm. Isto mant\u00e9m a blindagem el\u00e9trica, ao mesmo tempo que melhora consideravelmente a flexibilidade.<\/p> <\/li><\/ol><\/div><p>Para alcan\u00e7ar a m\u00e1xima fiabilidade mec\u00e2nica e cumprir as normas IPC-2223, integre estes <strong>regras de conce\u00e7\u00e3o de placas de circuito impresso r\u00edgido-flex\u00edveis<\/strong> no seu ambiente CAD.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Advanced_Considerations_High-Speed_and_HDI\"><\/span>Considera\u00e7\u00f5es avan\u00e7adas: Alta velocidade e HDI<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A combina\u00e7\u00e3o de placas r\u00edgido-flex\u00edveis com requisitos el\u00e9tricos de \u00faltima gera\u00e7\u00e3o acrescenta mais um n\u00edvel de complexidade.<\/p>\n<div style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/Navigating-Rigid-Flex-PCB-Design-Rules-1.jpg\" alt=\"Como lidar com as regras de conce\u00e7\u00e3o de placas de circuito impresso r\u00edgido-flex\u00edveis\" width=\"600\" height=\"400\" class=\"aligncenter size-full wp-image-6301\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/Navigating-Rigid-Flex-PCB-Design-Rules-1.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/Navigating-Rigid-Flex-PCB-Design-Rules-1-300x200.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/Navigating-Rigid-Flex-PCB-Design-Rules-1-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/div>\n<p>Se estiver a encaminhar sinais de v\u00e1rios gigabits atrav\u00e9s de um limite flex\u00edvel, deve garantir que a imped\u00e2ncia se mant\u00e9m est\u00e1vel. A constante diel\u00e9trica da poliimida (PI) \u00e9 diferente da do FR4 (normalmente cerca de 3,2 contra 4,4), e a substitui\u00e7\u00e3o de um plano de terra s\u00f3lido por um plano de terra hachurado altera a capacit\u00e2ncia do tra\u00e7o. Deve utilizar um solucionador de campo 3D para recalcular a largura da pista especificamente para a sec\u00e7\u00e3o flex\u00edvel, de modo a manter essa imped\u00e2ncia de 85 ohms ou 100 ohms. Para uma compreens\u00e3o mais aprofundada da integridade do sinal, leia o nosso guia sobre <a href=\"\/pt\/blog\/essential-high-speed-pcb-routing-techniques\/\">T\u00e9cnicas essenciais de fresagem de placas de circuito impresso de alta velocidade<\/a>.<\/p>\n<p>Al\u00e9m disso, se as suas sec\u00e7\u00f5es r\u00edgidas exigirem uma miniaturiza\u00e7\u00e3o extrema, pode integrar <a href=\"\/pt\/blog\/mastering-any-layer-hdi-pcb-manufacturing\/\">Fabrico de placas de circuito impresso (PCB) HDI com qualquer n\u00famero de camadas<\/a> dentro das zonas r\u00edgidas, limitando as camadas flex\u00edveis a apenas 1 ou 2 camadas de traseamento, de modo a maximizar a flexibilidade.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions_FAQ\"><\/span>Perguntas frequentes (FAQ)<span class=\"ez-toc-section-end\"><\/span><\/h2><div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1\"><strong class=\"schema-faq-question\">O que \u00e9 um \u00abrefor\u00e7o\u00bb numa placa de circuito impresso flex\u00edvel?<\/strong> <p class=\"schema-faq-answer\">Um refor\u00e7o \u00e9 uma pe\u00e7a adicional de material r\u00edgido (normalmente FR4, poliimida ou a\u00e7o inoxid\u00e1vel) colada a uma \u00e1rea espec\u00edfica do circuito flex\u00edvel. \u00c9 utilizado para proporcionar suporte mec\u00e2nico sob componentes pesados (como conectores) ou para refor\u00e7ar a borda do circuito flex\u00edvel, de modo a que possa ser inserido num conector ZIF (Zero Insertion Force).<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-2\"><strong class=\"schema-faq-question\">Posso colocar componentes na parte flex\u00edvel da placa?<\/strong> <p class=\"schema-faq-answer\">Sim, mas com algumas ressalvas. Os componentes na \u00e1rea flex\u00edvel devem ser pequenos e orientados de forma a que a sua dimens\u00e3o mais longa fique paralela ao eixo de flex\u00e3o, para minimizar a tens\u00e3o nas juntas de solda. Al\u00e9m disso, \u00e9 necess\u00e1rio utilizar refor\u00e7os por baixo de componentes com um elevado n\u00famero de pinos ou de conectores pesados, para evitar que o material flex\u00edvel se rasgue.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-3\"><strong class=\"schema-faq-question\">Posso utilizar cobre eletrodepositado (ED) normal numa placa flex\u00edvel din\u00e2mica?<\/strong> <p class=\"schema-faq-answer\">\u00c9 altamente desaconselhado. O cobre ED apresenta uma estrutura de gr\u00e3o vertical que \u00e9 propensa a microfissuras sob tens\u00e3o repetida. O cobre laminado recozido (RA), com a sua estrutura de gr\u00e3o horizontal, \u00e9 muito superior para flex\u00e3o din\u00e2mica.<\/p> <\/div> <\/div><h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclus\u00e3o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Masteriza\u00e7\u00e3o <strong>regras de conce\u00e7\u00e3o de placas de circuito impresso r\u00edgido-flex\u00edveis<\/strong> preenche a lacuna entre a funcionalidade el\u00e9trica e a resist\u00eancia mec\u00e2nica. Ao gerir meticulosamente o raio de curvatura, refor\u00e7ar as zonas de transi\u00e7\u00e3o, escalonar as pistas e suavizar os cantos geom\u00e9tricos, os engenheiros podem conceber interconex\u00f5es altamente din\u00e2micas, capazes de resistir aos ambientes mais adversos. Embora a fase de conce\u00e7\u00e3o seja inegavelmente mais exigente, a redu\u00e7\u00e3o da \u00e1rea ocupada pelo produto e os ganhos em termos de fiabilidade que da\u00ed resultam compensam largamente o esfor\u00e7o.<\/p>","protected":false},"excerpt":{"rendered":"<p>A intersec\u00e7\u00e3o entre a eletr\u00f3nica e a mec\u00e2nica. As placas de circuito impresso r\u00edgidas tradicionais s\u00e3o est\u00e1ticas; uma vez montadas, n\u00e3o se movem. Mas o que acontece quando os seus componentes eletr\u00f3nicos t\u00eam de se dobrar num min\u00fasculo dispositivo m\u00e9dico vest\u00edvel, torcer-se no interior de um bra\u00e7o rob\u00f3tico ou suportar as vibra\u00e7\u00f5es constantes de um motor aeroespacial? Recorre-se \u00e0 tecnologia Rigid-Flex. As placas \u00abRigid-Flex\u00bb combinam a estabilidade das placas padr\u00e3o [\u2026]<\/p>","protected":false},"author":1,"featured_media":6302,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"rigid flex PCB design rules","_yoast_wpseo_title":"Rigid-Flex PCB Design Rules for Maximum Mechanical Reliability","_yoast_wpseo_metadesc":"Explore essential rigid-flex PCB design rules, including bend radius, layer stackup, material selection, and mechanical reliability considerations for durable flexible circuits.","footnotes":""},"categories":[108],"tags":[505,507,506,508,504],"class_list":["post-6047","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-flexible-electronics","tag-mechanical-reliability","tag-pcb-design-rules","tag-polyimide","tag-rigid-flex-pcb-2"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - 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