{"id":3872,"date":"2022-07-18T14:03:15","date_gmt":"2022-07-18T06:03:15","guid":{"rendered":"https:\/\/uetpcb.com\/?p=3872"},"modified":"2022-07-19T08:42:53","modified_gmt":"2022-07-19T00:42:53","slug":"difference-between-pcba-and-pcb","status":"publish","type":"post","link":"https:\/\/uetpcb.com\/pt\/difference-between-pcba-and-pcb\/","title":{"rendered":"Qual \u00e9 a diferen\u00e7a entre PCBA e PCB?"},"content":{"rendered":"<div class=\"container section-title-container\" ><h2 class=\"section-title section-title-normal\"><b aria-hidden=\"true\"><\/b><span class=\"section-title-main\" >Qual \u00e9 a diferen\u00e7a entre PCB e PCBA?<\/span><b aria-hidden=\"true\"><\/b><\/h2><\/div>\r\n<p>A placa de circuito impresso (PCB) \u00e9 o suporte de todos os componentes eletr\u00f4nicos e circuitos. Os materiais utilizados nas PCBs podem ser RF4, metal, fibra de vidro, etc., e cada um deles apresenta caracter\u00edsticas diferentes, assim como seu escopo de uso tamb\u00e9m varia. Uma PCB cont\u00e9m principalmente as conex\u00f5es dos diversos orif\u00edcios passantes da placa de circuito, geralmente placas de circuito nuas. J\u00e1 PCBA refere-se ao processo SMT, \u00e0s placas acabadas em geral e \u00e0 montagem de placas de circuito com componentes inseridos.<\/p>\r\n<div class=\"row align-middle\"  id=\"row-1989601859\"> \n\t<div id=\"col-1776944913\" class=\"col medium-6 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t \t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_219862728\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img decoding=\"async\" width=\"817\" height=\"527\" src=\"https:\/\/uetpcb.com\/wp-content\/uploads\/2021\/07\/a5423cc1-2608-4eb4-95a4-81af67ec0658.png\" class=\"attachment-large size-large\" alt=\"pcb\" srcset=\"https:\/\/uetpcb.com\/wp-content\/uploads\/2021\/07\/a5423cc1-2608-4eb4-95a4-81af67ec0658.png 817w, https:\/\/uetpcb.com\/wp-content\/uploads\/2021\/07\/a5423cc1-2608-4eb4-95a4-81af67ec0658-300x194.png 300w, https:\/\/uetpcb.com\/wp-content\/uploads\/2021\/07\/a5423cc1-2608-4eb4-95a4-81af67ec0658-768x495.png 768w\" sizes=\"(max-width: 817px) 100vw, 817px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_219862728 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t \t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t \n\t<div id=\"col-1590656853\" class=\"col medium-6 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t \t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_1899073105\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img decoding=\"async\" width=\"600\" height=\"372\" src=\"https:\/\/uetpcb.com\/wp-content\/uploads\/2021\/09\/1.jpg\" class=\"attachment-large size-large\" alt=\"Placa de circuito impresso\" srcset=\"https:\/\/uetpcb.com\/wp-content\/uploads\/2021\/09\/1.jpg 600w, https:\/\/uetpcb.com\/wp-content\/uploads\/2021\/09\/1-300x186.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_1899073105 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t \t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t <\/div>\r\n<table>\r\n<thead>\r\n<tr>\r\n<th>\u00a0<\/th>\r\n<th>PCB<\/th>\r\n<th>PCBA<\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody>\r\n<tr>\r\n<td>Defini\u00e7\u00e3o<\/td>\r\n<td>Placa de Circuito Impresso<\/td>\r\n<td>Montagem de placas de circuito impresso<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Fun\u00e7\u00e3o<\/td>\r\n<td>Uma placa em branco, um suporte para componentes eletr\u00f4nicos<\/td>\r\n<td>Uma placa funcional que cont\u00e9m v\u00e1rios componentes eletr\u00f4nicos<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Conex\u00e3o<\/td>\r\n<td>Nenhum<\/td>\r\n<td>Existem muitas linhas<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Requisitos de isolamento<\/td>\r\n<td>Menos<\/td>\r\n<td>Mais<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Usos<\/td>\r\n<td>Fa\u00e7a um suporte para componentes eletr\u00f4nicos<\/td>\r\n<td>utilizados diretamente em dispositivos eletr\u00f4nicos<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Custo<\/td>\r\n<td>Barato<\/td>\r\n<td>Caro<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Manuten\u00e7\u00e3o<\/td>\r\n<td>Pouca ou nenhuma manuten\u00e7\u00e3o<\/td>\r\n<td>Exige mais manuten\u00e7\u00e3o no processo de montagem<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Transporte<\/td>\r\n<td>Requer embalagem a v\u00e1cuo<\/td>\r\n<td>Requer compartimentos ou embalagem antiest\u00e1tica<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Processo de fabrica\u00e7\u00e3o<\/td>\r\n<td>Gravura<\/td>\r\n<td>Nenhum<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Soldagem<\/td>\r\n<td>N\u00e3o \u00e9 necess\u00e1rio soldar<\/td>\r\n<td>Obrigat\u00f3rio<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<p>Em termos simples, PCBA \u00e9 a placa de circuito impresso pronta, formada ap\u00f3s a montagem da PCB, o processo SMT etc. As camadas de sinal da PCB s\u00e3o divididas em 2, 4, 6 e 8 camadas. Geralmente, trabalhamos com 4 e 6 camadas.<br \/>O texto acima \u00e9 um resumo sucinto das diferen\u00e7as entre PCB e PCBA. A seguir, apresentaremos brevemente a diferen\u00e7a entre PCBs e montagem de PCBs.<\/p>\r\n<div class=\"container section-title-container\" ><h2 class=\"section-title section-title-normal\"><b aria-hidden=\"true\"><\/b><span class=\"section-title-main\" >Os principais tipos de placas de circuito impresso (PCBs) incluem<\/span><b aria-hidden=\"true\"><\/b><\/h2><\/div>\r\n<h3>PCBs de uma face<\/h3>\r\n<p>As placas de circuito impresso (PCB) de uma face s\u00e3o o tipo mais tradicional de placa de circuito impresso. Essa placa \u00e9 adequada para dispositivos eletr\u00f4nicos simples, como fontes de alimenta\u00e7\u00e3o, ilumina\u00e7\u00e3o LED, etc. Ela possui uma camada condutora na parte superior. O processo de fabrica\u00e7\u00e3o das placas de circuito impresso de uma face \u00e9 simples e de baixo custo, especialmente para projetos de baixa densidade. Quando uma placa de circuito impresso de uma face apresenta falha, o reparo \u00e9 relativamente simples.<\/p>\r\n<h3>PCBs de dupla face<\/h3>\r\n<p>A ind\u00fastria de prot\u00f3tipos de placas de circuito impresso (PCB) de dupla face \u00e9 mais abrangente, abrangendo, por exemplo, sistemas de suporte (SUPs), sistemas de telefonia celular, etc. A diferen\u00e7a entre as PCBs de dupla face e as de face \u00fanica \u00e9 que as primeiras possuem uma camada condutora adicional na parte superior e na parte inferior. Em compara\u00e7\u00e3o com as de uma face, o circuito fica menor e mais compacto. As placas de circuito impresso de dupla face oferecem maior flexibilidade de opera\u00e7\u00e3o. Podemos utilizar a tecnologia de furos passantes ou a tecnologia de montagem em superf\u00edcie para montar o circuito.<\/p>\r\n<h3>PCBs multicamadas<\/h3>\r\n<p>Geralmente, aqueles que cont\u00eam mais de duas camadas de cobre s\u00e3o chamados de PCBs multicamadas. Os PCBs multicamadas podem ser utilizados em dispositivos eletr\u00f4nicos mais avan\u00e7ados, como computadores, sistemas de comunica\u00e7\u00e3o, ind\u00fastria aeroespacial, etc. Eles s\u00e3o projetados para serem mais potentes, mais compactos, menores e, normalmente, mais flex\u00edveis.<\/p>\r\n<h3>PCB r\u00edgida<\/h3>\r\n<p>Uma placa de circuito impresso r\u00edgida \u00e9 uma placa que n\u00e3o pode ser dobrada. Uma placa de circuito impresso r\u00edgida \u00e9 uma placa de circuito impresso robusta e inflex\u00edvel. O substrato da placa \u00e9 r\u00edgido, o que confere rigidez e resist\u00eancia \u00e0 placa. Seu substrato, cobre, adesivos resistentes \u00e0 solda e camadas de serigrafia termoligadas. Sua vantagem em rela\u00e7\u00e3o a outras placas \u00e9 o baixo ru\u00eddo eletr\u00f4nico, o peso leve e a facilidade de manuten\u00e7\u00e3o e diagn\u00f3stico. No entanto, n\u00e3o \u00e9 poss\u00edvel modificar sua forma depois que a placa \u00e9 fabricada.<\/p>\r\n<h3>PCBs flex\u00edveis<\/h3>\r\n<p>As placas de circuito impresso flex\u00edveis (PCBs) s\u00e3o geralmente feitas de poliamida, PEEK ou filme de poli\u00e9ster. A maior vantagem das placas de circuito impresso flex\u00edveis \u00e9 que elas podem ser dobradas no formato desejado. Isso as torna ideais para a soldagem de componentes. Al\u00e9m disso, permitem eliminar o uso de conectores. Por isso, as placas de circuito impresso flex\u00edveis s\u00e3o utilizadas em diversas aplica\u00e7\u00f5es que envolvem altas temperaturas e alta densidade.<\/p>\r\n<h3>PCBs r\u00edgido-flex\u00edveis<\/h3>\r\n<p>A placa de circuito impresso r\u00edgido-flex\u00edvel \u00e9 uma placa h\u00edbrida. Ela combina as vantagens de ambas as tecnologias, permitindo que linhas condutoras mais estreitas ocupem menos espa\u00e7o. As placas de circuito impresso r\u00edgido-flex\u00edveis combinam componentes de placas flex\u00edveis e r\u00edgidas e podem ser dobradas e curvadas continuamente. Essa funcionalidade 3D reduz a necessidade de espa\u00e7o.<\/p>\r\n<h3>Sem halog\u00eanio<\/h3>\r\n<p>Este \u00e9 um tipo de placa de circuito impresso (PCB) ecologicamente correto, que pode ser utilizado na fabrica\u00e7\u00e3o de qualquer tipo de PCB. Sua maior vantagem \u00e9 que n\u00e3o causa polui\u00e7\u00e3o ao meio ambiente.<\/p>\r\n<div class=\"container section-title-container\" ><h2 class=\"section-title section-title-normal\"><b aria-hidden=\"true\"><\/b><span class=\"section-title-main\" >O que \u00e9 uma placa PCBA?<\/span><b aria-hidden=\"true\"><\/b><\/h2><\/div> <div class=\"row align-middle\"  id=\"row-207774090\"> \n\t<div id=\"col-1750516331\" class=\"col medium-8 small-12 large-8\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t \t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_412117098\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img decoding=\"async\" width=\"615\" height=\"384\" src=\"https:\/\/uetpcb.com\/wp-content\/uploads\/2021\/07\/\u56fe\u72471.png\" class=\"attachment-large size-large\" alt=\"PCB de alum\u00ednio\" srcset=\"https:\/\/uetpcb.com\/wp-content\/uploads\/2021\/07\/\u56fe\u72471.png 615w, https:\/\/uetpcb.com\/wp-content\/uploads\/2021\/07\/\u56fe\u72471-300x187.png 300w\" sizes=\"(max-width: 615px) 100vw, 615px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_412117098 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t \t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t <\/div>\r\n<h3>Tecnologia de montagem em superf\u00edcie<\/h3>\r\n<p>O m\u00e9todo de montagem conhecido como Tecnologia de Montagem em Superf\u00edcie (SMT) consiste na fixa\u00e7\u00e3o de componentes el\u00e9tricos \u00e0 superf\u00edcie de uma placa de circuito impresso (PCB). \u00c9 poss\u00edvel obter uma maior densidade de conex\u00f5es gra\u00e7as aos seus altos n\u00edveis de automa\u00e7\u00e3o e flexibilidade. Isso permite que os fabricantes incorporem circuitos complexos em pe\u00e7as min\u00fasculas.<br \/><strong>As quatro etapas b\u00e1sicas do SMT em placas de circuito impresso (PCBA):<\/strong><\/p>\r\n<ol>\r\n<li>PCB: O projetista de PCBA aplica pasta de solda nas placas de circuito impresso (PCB) onde for necess\u00e1rio.<\/li>\r\n<li>Posicionamento dos componentes: Em seguida, a m\u00e1quina de montagem posiciona os componentes na placa.<\/li>\r\n<li>Soldagem por refluxo: A placa PCBA \u00e9 ent\u00e3o aquecida em um forno de refluxo pelo projetista de PCBA at\u00e9 que a pasta de solda atinja a temperatura necess\u00e1ria para a forma\u00e7\u00e3o das juntas de solda.<\/li>\r\n<li>Inspe\u00e7\u00e3o: O montador inspeciona cada etapa do processo de SMT, incluindo antes e depois da soldagem por fluxo e antes e depois da coloca\u00e7\u00e3o dos componentes.<\/li>\r\n<\/ol>\r\n<h3>Tecnologia de orif\u00edcios passantes<\/h3>\r\n<div class=\"row align-middle\"  id=\"row-1166728893\"> \n\t<div id=\"col-117210831\" class=\"col medium-8 small-12 large-8\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t \t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_62545260\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img decoding=\"async\" width=\"312\" height=\"231\" src=\"https:\/\/uetpcb.com\/wp-content\/uploads\/2021\/03\/PCBA-cleaning-process.png\" class=\"attachment-large size-large\" alt=\"Processo de limpeza de PCBA\" srcset=\"https:\/\/uetpcb.com\/wp-content\/uploads\/2021\/03\/PCBA-cleaning-process.png 312w, https:\/\/uetpcb.com\/wp-content\/uploads\/2021\/03\/PCBA-cleaning-process-300x222.png 300w\" sizes=\"(max-width: 312px) 100vw, 312px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_62545260 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t \t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t <\/div>\r\n<p>Em compara\u00e7\u00e3o com a SMT, trata-se de uma tecnologia mais antiga. No entanto, ela refor\u00e7a a liga\u00e7\u00e3o entre a placa e o componente, tornando a montagem mais robusta e confi\u00e1vel.<br \/>\u00c9 poss\u00edvel realizar a montagem por furos passantes de forma totalmente ou parcialmente autom\u00e1tica. O procedimento de montagem por furos passantes da PCBA inclui as seguintes fases.<br \/>A tecnologia de furos passantes \u00e9 montada. Esse processo envolve a perfura\u00e7\u00e3o de furos na placa de circuito impresso (PCB), atrav\u00e9s dos quais podem ser conectados componentes eletr\u00f4nicos chamados terminais.<\/p>\r\n<ol>\r\n<li>Perfura\u00e7\u00e3o: O primeiro passo no processo de furos passantes consiste em perfurar orif\u00edcios na placa de circuito impresso. Esses orif\u00edcios devem ter o tamanho adequado para acomodar os pinos dos componentes.<\/li>\r\n<li>Posicionamento dos terminais: O montador coloca as pontas nos orif\u00edcios.<\/li>\r\n<li>Soldagem: A soldagem \u00e9 a etapa seguinte do processo. Essa etapa garante que o conjunto fique firmemente fixado no lugar.<\/li>\r\n<li>Inspe\u00e7\u00e3o: O conjunto \u00e9 inspecionado continuamente para garantir que a PCBA esteja funcionando conforme o esperado.<\/li>\r\n<\/ol>","protected":false},"excerpt":{"rendered":"<p>PCB is the carrier of all electronic components and circuits. PCB materials can be RF4, metal, fiberglass, etc., and they are different, and their scope of use is also different. A PCB mainly contains the connection of the various through holes of the circuit board, generally bare circuit boards. And PCBA refers to the SMT&#8230;<\/p>","protected":false},"author":10,"featured_media":3729,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-3872","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>PCB and PCBA Manufacturing - What&#039;s the Difference<\/title>\n<meta name=\"description\" content=\"What is the connection between PCB and PCBA? PCB refers to the printed circuit board. 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PCB refers to the printed circuit board. 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