{"id":34836,"date":"2025-12-24T16:28:28","date_gmt":"2025-12-24T08:28:28","guid":{"rendered":"https:\/\/pcbcool.com\/?p=34836"},"modified":"2026-01-04T19:21:46","modified_gmt":"2026-01-04T11:21:46","slug":"low-volume-high-power-audio-pcb-assembly-project","status":"publish","type":"post","link":"https:\/\/pcbcool.com\/pt-br\/case-studies\/low-volume-high-power-audio-pcb-assembly-project\/","title":{"rendered":"Projeto de Montagem de PCB de \u00c1udio de Baixo Volume e Alta Pot\u00eancia"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"34836\" class=\"elementor elementor-34836\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"wd-negative-gap elementor-element elementor-element-6bff3ff e-flex e-con-boxed e-con e-parent\" data-id=\"6bff3ff\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-6abee4e e-con-full e-flex e-con e-child\" data-id=\"6abee4e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6d0ac02 color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"6d0ac02\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>TM teve um problema.<\/p><p>Eles precisaram construir o \u201cHammerhead Dyno\u201d, um equipamento de medi\u00e7\u00e3o de \u00e1udio de.<\/p><p>Este n\u00e3o foi um trabalho padr\u00e3o de \u201cimprimir e colocar\u201d. O design exigia <strong>Montagem de Placas de Circuito Impresso de Baixo Volume<\/strong> (lotes de 25 a 100 unidades), mas exigiu a confiabilidade da eletr\u00f4nica de pot\u00eancia industrial. A placa tinha 2,0 mm de espessura \u2013 significativamente mais espessa que os 1,6 mm padr\u00e3o \u2013 e era populada com resistores de pot\u00eancia massivos da s\u00e9rie 3550 da TE Connectivity.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"wd-lazy-fade aligncenter wp-image-34841 size-full\" src=\"https:\/\/pcbcool.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Inquiry-request-sent-by-the-customer.jpg\" alt=\"Solicita\u00e7\u00e3o de consulta enviada pelo cliente\" width=\"916\" height=\"928\" srcset=\"\" data-srcset=\"https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Inquiry-request-sent-by-the-customer.jpg 916w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Inquiry-request-sent-by-the-customer-150x152.jpg 150w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Inquiry-request-sent-by-the-customer-600x608.jpg 600w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Inquiry-request-sent-by-the-customer-296x300.jpg 296w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Inquiry-request-sent-by-the-customer-790x800.jpg 790w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Inquiry-request-sent-by-the-customer-768x778.jpg 768w\" sizes=\"auto, (max-width: 916px) 100vw, 916px\" \/><\/p><p>N\u00e3o aceitamos apenas os arquivos Gerber e operamos as m\u00e1quinas. Isso teria falhado. Tivemos que reengenhar o processo de montagem, especificamente em rela\u00e7\u00e3o a <strong>Paineliza\u00e7\u00e3o Heterog\u00eanea<\/strong> e <strong>Montagem de Massa T\u00e9rmica Elevada<\/strong>, para fazer com que a economia funcione e manter a f\u00edsica sob controle.<\/p><p>Aqui est\u00e1 a an\u00e1lise detalhada de como lidamos com os trade-offs de engenharia, as falhas que evitamos e os dados por tr\u00e1s das decis\u00f5es.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f42f3a5 wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"f42f3a5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-primary wd-title-style-underlined wd-title-size-large text-left\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<h2 class=\"woodmart-title-container title wd-fontsize-xxl\">Desafios e Restri\u00e7\u00f5es Principais<\/h2> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-12be22b wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"12be22b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-default wd-title-style-default wd-title-size-medium text-left\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<h3 class=\"woodmart-title-container title wd-fontsize-xl\">A \u201cArmadilha da Variante\u201d na Produ\u00e7\u00e3o de Baixo Volume<\/h3> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8e0f916 color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"8e0f916\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>A primeira quest\u00e3o n\u00e3o foi t\u00e9cnica; foi financeira. O RFQ da TM listava sete variantes de resist\u00eancia diferentes (1,0\u03a9, 1,8\u03a9, 4,7\u03a9, etc.) para o mesmo fator de forma.<\/p><p>Em um fluxo de trabalho padr\u00e3o de f\u00e1brica de PCBA, cada SKU exclusivo \u00e9 tratado como um trabalho separado.<\/p><p><strong>A Matem\u00e1tica:<\/strong><\/p><ul><li><em>Gabarito a Laser<\/em> ~$80 \u2013 $150 por projeto.<\/li><li><em>Configura\u00e7\u00e3o da M\u00e1quina (Pick &amp; Place + Reflow):<\/em> ~$100 \u2013 $200 por execu\u00e7\u00e3o.<\/li><li><em>Custo Total de Engenharia N\u00e3o Recorrente (NRE) por variante:<\/em> ~$250.<\/li><li><em>Total para 7 variantes:<\/em> $1.750 apenas para ligar as m\u00e1quinas.<\/li><\/ul><p>Para uma startup que produz 25 unidades de cada modelo, esse custo de NRE acrescenta quase $10 por placa, antes mesmo de voc\u00ea pagar pelos componentes ou pela placa de circuito impresso em branco. Isso acaba com a margem de lucro.<\/p><p>N\u00e3o pudemos tratar estes como sete empregos.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ac41058 wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"ac41058\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-default wd-title-style-default wd-title-size-medium text-left\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<h3 class=\"woodmart-title-container title wd-fontsize-xl\">O Problema de F\u00edsica: Placas de 2,0 mm e Grandes Resistores<\/h3> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f1a68e6 color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"f1a68e6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>O problema t\u00e9cnico foi mais dif\u00edcil. <strong>Fabrica\u00e7\u00e3o de PCBAs de \u00c1udio<\/strong> requer integridade de sinal, e para uma carga fict\u00edcia (um dispositivo que absorve pot\u00eancia para testar amplificadores), isso significa estabilidade t\u00e9rmica.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wd-lazy-fade aligncenter wp-image-34854 size-full\" src=\"https:\/\/pcbcool.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/High-power-heatsink-with-RF-connector-for-audio-or-RF-PCB-testing-modules.jpg\" alt=\"Dissipador de calor de alta pot\u00eancia com conector RF para m\u00f3dulos de teste de PCB de \u00e1udio ou RF\" width=\"1024\" height=\"814\" srcset=\"\" data-srcset=\"https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/High-power-heatsink-with-RF-connector-for-audio-or-RF-PCB-testing-modules.jpg 1024w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/High-power-heatsink-with-RF-connector-for-audio-or-RF-PCB-testing-modules-150x119.jpg 150w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/High-power-heatsink-with-RF-connector-for-audio-or-RF-PCB-testing-modules-600x477.jpg 600w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/High-power-heatsink-with-RF-connector-for-audio-or-RF-PCB-testing-modules-377x300.jpg 377w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/High-power-heatsink-with-RF-connector-for-audio-or-RF-PCB-testing-modules-1006x800.jpg 1006w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/High-power-heatsink-with-RF-connector-for-audio-or-RF-PCB-testing-modules-768x611.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<p>O projeto utilizou um substrato FR-4 de 2,0 mm. Isso adiciona rigidez, o que \u00e9 bom. Mas termicamente, ele age como um dissipador de calor durante o processo de soldagem. Ele retira o calor da pasta de solda antes que ela possa aderir \u00e0 pastilha.<\/p>\n<p>Em seguida, existem os resistores TE 3550. Estes s\u00e3o Componentes com Termina\u00e7\u00e3o Inferior (BTCs) com grandes pads t\u00e9rmicos. A conex\u00e3o entre o componente e a placa \u00e9 o caminho principal para a dissipa\u00e7\u00e3o de calor.<\/p>\n<p><a href=\"https:\/\/www.researchgate.net\/publication\/3425952_A_thermal_mechanical_and_electrical_study_of_voiding_in_the_solder_die-attach_of_power_MOSFETs\" target=\"_blank\" rel=\"nofollow noopener\">Se essa junta de solda apresentar bolhas (vazios), o calor n\u00e3o poder\u00e1 sair.<\/a><\/p>\n<ul>\n<li><em>O risco espec\u00edfico:<\/em> O g\u00e1s de fluxo fica preso sob o grande pad durante o reflow. O g\u00e1s possui condutividade t\u00e9rmica terr\u00edvel em compara\u00e7\u00e3o com a liga de solda.<\/li>\n<li><em>A consequ\u00eancia:<\/em> Uma cavidade cria um \u201cgargalo no fluxo de calor\u201d. A corrente \u00e9 for\u00e7ada a passar por uma \u00e1rea menor, criando pontos de superaquecimento. Se a \u00e1rea da cavidade exceder 20-50%, a temperatura do chip dispara.<\/li>\n<li><em>O Impacto do \u00c1udio:<\/em> \u00c0 medida que o resistor aquece, sua resist\u00eancia muda (Coeficiente de Temperatura de Resist\u00eancia, ou TCR). Se a resist\u00eancia variar, o Dyno fornecer\u00e1 leituras falsas.<\/li>\n<\/ul>\n<p>A TM declarou: \u201cNenhum Teste Funcional \u00e9 necess\u00e1rio.\u201d (Isso \u00e9 sempre assustador para um fabricante. Significa que se cometermos um erro, s\u00f3 o descobriremos quando o cliente o conectar. Tivemos que ter certeza.)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-53aff67 wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"53aff67\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-primary wd-title-style-underlined wd-title-size-large text-left\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<h2 class=\"woodmart-title-container title wd-fontsize-xxl\">Solu\u00e7\u00f5es de Engenharia PCBCool<\/h2> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-090eb95 wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"090eb95\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-default wd-title-style-default wd-title-size-medium text-left\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<h3 class=\"woodmart-title-container title wd-fontsize-xl\">Solu\u00e7\u00e3o 1: Paineliza\u00e7\u00e3o Heterog\u00eanea<\/h3> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-894ac07 color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"894ac07\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Abordagem padr\u00e3o: construir cada variante em pain\u00e9is separados, pagar sete taxas de NRE.<\/p><p>Nossa abordagem: combinar todos os sete designs em um \u00fanico \u201cpainel familiar\u201d utilizando paineliza\u00e7\u00e3o heterog\u00eanea.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"wd-lazy-fade aligncenter wp-image-34861 size-full\" src=\"https:\/\/pcbcool.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Solution-1-Heterogeneous-Panelization.jpg\" alt=\"Solu\u00e7\u00e3o 1 Paineliza\u00e7\u00e3o Heterog\u00eanea\" width=\"1111\" height=\"958\" srcset=\"\" data-srcset=\"https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Solution-1-Heterogeneous-Panelization.jpg 1111w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Solution-1-Heterogeneous-Panelization-150x129.jpg 150w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Solution-1-Heterogeneous-Panelization-600x517.jpg 600w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Solution-1-Heterogeneous-Panelization-348x300.jpg 348w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Solution-1-Heterogeneous-Panelization-928x800.jpg 928w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Solution-1-Heterogeneous-Panelization-768x662.jpg 768w\" sizes=\"auto, (max-width: 1111px) 100vw, 1111px\" \/><\/p><p style=\"text-align: center;\"><strong>Compara\u00e7\u00e3o de Layout de Painel<\/strong><\/p><table><thead><tr><th>Abordagem<\/th><th>Unidades por Painel<\/th><th>Desperd\u00edcio de Material<\/th><\/tr><\/thead><tbody><tr><td>Variante \u00fanica (7 pain\u00e9is)<\/td><td>45 cada<\/td><td>12%<\/td><\/tr><tr><td>Painel Familiar (combinado)<\/td><td>315 total<\/td><td>3%<\/td><\/tr><\/tbody><\/table><p>Utilizamos o corte em V para a separa\u00e7\u00e3o. O corte em V n\u00e3o requer espa\u00e7amento entre as placas, maximizando o aproveitamento do material. Para os m\u00f3dulos retangulares da TM, isso representou uma economia de 9% de \u00e1rea de painel em compara\u00e7\u00e3o com a fresagem.<\/p><p>Detalhe chave: fiduciais globais a cada 150 mm em todo o painel. A m\u00e1quina de coloca\u00e7\u00e3o Fuji NXT III utiliza estes para corrigir o estiramento do painel durante o aquecimento. Sem eles, a coloca\u00e7\u00e3o de resistores desvia \u00b10,1 mm em pain\u00e9is grandes.<\/p><p>(No projeto do primeiro painel, esquecemos os pontos de refer\u00eancia. Tivemos que descartar 10 prot\u00f3tipos. Li\u00e7\u00e3o aprendida com o $340.)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3aa2dde wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"3aa2dde\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-default wd-title-style-default wd-title-size-medium text-left\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<h3 class=\"woodmart-title-container title wd-fontsize-xl\">Solu\u00e7\u00e3o 2: Combatendo Vazios de Solda<\/h3> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4b935f7 color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"4b935f7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>O fluxo \u00e9 f\u00edsica. Vol\u00e1teis de fluxo evaporam a 150-180\u00b0C. Se os gases n\u00e3o conseguirem escapar antes que a solda solidifique a 217\u00b0C, eles ficam presos.<\/p><p><strong>Mecanismo de Forma\u00e7\u00e3o de V\u00e1cuo<\/strong><\/p><pre class=\"wp-block-code\"><code>Almoxarifado grande (abertura \u00fanica)\n\u251c\u2500 Dep\u00f3sitos de pasta de solda\n\u251c\u2500 Os componentes vol\u00e1teis do fluxo evaporam-se\n\u2514\u2500 Gases retidos \u2192 forma\u00e7\u00e3o de cavidades no 25-40%\n<\/code><\/pre><p>Implementamos <a href=\"https:\/\/www.farnell.com\/datasheets\/2254442.pdf\" target=\"_blank\" rel=\"nofollow noopener\">design de stencil para vitr\u00f4<\/a>. Em vez de uma \u00fanica abertura grande, usamos uma grade de 3\u00d73 de aberturas menores.<\/p><p><strong>Especifica\u00e7\u00e3o de Est\u00eancil<\/strong><\/p><ul><li><em>Fornecedor:<\/em> Stencils Unlimited, a\u00e7o inoxid\u00e1vel cortado a laser<\/li><li><em>Espessura:<\/em> 0,125 mm (5 mil)<\/li><li><em>Redu\u00e7\u00e3o de abertura:<\/em> 60% de \u00e1rea da almofada (e n\u00e3o 50-80%, como se supunha inicialmente)<\/li><li><em>Largura da ponte:<\/em> 0,2 mm entre aberturas<\/li><\/ul><p>Isso cria canais de escape. Os compostos vol\u00e1teis s\u00e3o liberados pelas pontes. O volume de res\u00edduos diminuiu de 35% (primeiro teste) para 8% (processo final).<\/p><p>A escolha da pasta de solda \u00e9 importante. Testamos tr\u00eas pastas \"no-clean\":<\/p><table><thead><tr><th>Cola de Marca<\/th><th>Taxa de Anula\u00e7\u00e3o<\/th><th>Custo\/kg<\/th><th>Coment\u00e1rio<\/th><\/tr><\/thead><tbody><tr><td>Senju M40-LS720V<\/td><td>8.2%<\/td><td>$85<\/td><td>Selecionado<\/td><\/tr><tr><td>\u00cdndio NC-SMQ92J<\/td><td>11.5%<\/td><td>$92<\/td><td>Bom backup<\/td><\/tr><tr><td>META REL61<\/td><td>15.3%<\/td><td>$78<\/td><td>Vota\u00e7\u00e3o muito alta<\/td><\/tr><\/tbody><\/table><p>O Senju M40 venceu. Seu sistema de fluxo utiliza 2,51 TP3T de compostos vol\u00e1teis, em compara\u00e7\u00e3o com os 4,11 TP3T do AIM REL61. Menos compostos vol\u00e1teis = menos g\u00e1s a ser retido.<\/p><p>(Inicialmente, utilizamos pasta sol\u00favel em \u00e1gua porque era $12 mais barata. Grande erro. O n\u00edvel de res\u00edduos atingiu 42% na primeira execu\u00e7\u00e3o. Tivemos que limpar as placas e reiniciar. Perdemos tr\u00eas dias.)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1851506 wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"1851506\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-default wd-title-style-default wd-title-size-medium text-left\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<h3 class=\"woodmart-title-container title wd-fontsize-xl\">Solu\u00e7\u00e3o 3: Perfil de Refluxo para Massa T\u00e9rmica<\/h3> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-21528f6 color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"21528f6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Perfil padr\u00e3o sem chumbo:<\/p><ul><li><em>Mergulhar:<\/em> 60-90 segundos a 150-180\u00b0C<\/li><li><em>Tempo Acima do L\u00edquido (TAL):<\/em> 45-60 segundos<\/li><\/ul><p><img loading=\"lazy\" decoding=\"async\" class=\"wd-lazy-fade aligncenter wp-image-34868 size-full\" src=\"https:\/\/pcbcool.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Reflow-Temp-Zone.jpg\" alt=\"Zona de Refluxo\" width=\"1062\" height=\"729\" srcset=\"\" data-srcset=\"https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Reflow-Temp-Zone.jpg 1062w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Reflow-Temp-Zone-150x103.jpg 150w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Reflow-Temp-Zone-600x412.jpg 600w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Reflow-Temp-Zone-400x275.jpg 400w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Reflow-Temp-Zone-768x527.jpg 768w\" sizes=\"auto, (max-width: 1062px) 100vw, 1062px\" \/><\/p><p>Para placa de 2,0 mm com resistores 3550, isto falha. A placa atua como dissipador de calor.<\/p><p>Nosso perfil otimizado:<\/p><ul><li><em>Extens\u00e3o do tempo de imers\u00e3o:<\/em> 120 segundos a 160\u00b0C<\/li><li><em>TAL<\/em> 75 segundos a 235\u00b0C de pico<\/li><li><em>Taxa de resfriamento:<\/em> 2.5\u00b0C\/seg (lento para reduzir o estresse)<\/li><\/ul><p>Por qu\u00ea? A placa de 2,0 mm leva mais tempo para atingir o equil\u00edbrio t\u00e9rmico. Tempo de aquecimento insuficiente = gradiente de temperatura na placa = juntas frias nas bordas externas.<\/p><p style=\"text-align: center;\"><strong>Dados de C\u00e2mera T\u00e9rmica<\/strong><\/p><table><thead><tr><th>Painel de Controle<\/th><th>Perfil Padr\u00e3o<\/th><th>Perfil Otimizado<\/th><th>\u0394T<\/th><\/tr><\/thead><tbody><tr><td>Centro<\/td><td>235\u00b0C<\/td><td>237\u00b0C<\/td><td>+2\u00b0C<\/td><\/tr><tr><td>Borda<\/td><td>201\u00b0C<\/td><td>231\u00b0C<\/td><td>+30\u00b0C<\/td><\/tr><tr><td>Pad de resistor<\/td><td>215\u00b0C<\/td><td>234\u00b0C<\/td><td>+19\u00b0C<\/td><\/tr><\/tbody><\/table><p>A temperatura da borda saltou de 201\u00b0C para 231\u00b0C. Essa \u00e9 a diferen\u00e7a entre uma solda fria e uma boa solda.<\/p><p>(L.Wang, nosso engenheiro de processo, argumentou por 140 segundos de imers\u00e3o. Chegamos a um acordo de 120 segundos. Ele provavelmente estava certo \u2014 a placa ainda mostrava um gradiente de 5\u00b0C. Adicionou-se 15 segundos no pr\u00f3ximo lote.)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f46fa94 wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"f46fa94\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-default wd-title-style-default wd-title-size-medium text-left\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<h3 class=\"woodmart-title-container title wd-fontsize-xl\">Solu\u00e7\u00e3o 4: C\u00e1lculos de Vazios T\u00e9rmicos<\/h3> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c0fc022 color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"c0fc022\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Condutividade t\u00e9rmica do FR-4: 0,3 W\/mK. Cobre: 398 W\/mK. Vias s\u00e3o autoestradas t\u00e9rmicas atrav\u00e9s da placa.<\/p><p><strong>Requisito de Projeto<\/strong><\/p><ul><li><em>Pot\u00eancia do resistor:<\/em> 20W m\u00e1x<\/li><li><em>TCR:<\/em> 25 ppm\/\u00b0C (especifica\u00e7\u00e3o Vishay)<\/li><li><em>\u0394R Permitido:<\/em> 0,1% \u2192 \u0394T m\u00e1ximo: 40 \u00b0C<\/li><li><em>Ambiente:<\/em> 25\u00b0C \u2192 Tj M\u00e1x: 65\u00b0C<\/li><\/ul><p>C\u00e1lculo de resist\u00eancia t\u00e9rmica:<\/p><pre class=\"wp-block-code\"><code>R\u03b8JA = (Tj - Ta) \/ P = (65 - 25) \/ 20 = 2,0\u00b0C\/W\n<\/code><\/pre><p>Placa sem vias: R\u03b8JA \u2248 45\u00b0C\/W (estimativa da simula\u00e7\u00e3o Flotherm)<\/p><p>Cada via (0,3mm de di\u00e2metro, 1,6mm de comprimento, revestida com 25\u03bcm):<\/p><pre class=\"wp-block-code\"><code>R\u03b8via = 1 \/ (k \u00d7 A) = 1 \/ (0,4 W\/mmK \u00d7 0,07 mm\u00b2) = 36\u00b0C\/W por via\n<\/code><\/pre><p>Necess\u00e1rio 25 vias em paralelo: 36\u00b0C\/W \u00f7 25 = 1.44\u00b0C\/W<\/p><p>Adicionar resist\u00eancia de espalhamento: ~0,5\u00b0C\/W<\/p><p>Total: 1.94\u00b0C\/W \u2192 atende \u00e0 meta de 2.0\u00b0C\/W.<\/p><p>Posicionamos vias em uma grade 5x5, com passo de 0,5 mm, diretamente abaixo da pastilha do resistor. <a href=\"https:\/\/www.ti.com\/lit\/pdf\/sloa120\" target=\"_blank\" rel=\"nofollow noopener\">Di\u00e2metro limitado a 0,3 mm para evitar que a solda suba<\/a>.<\/p><p>(O projeto inicial utilizava vias de 0,4 mm. A solda escorria por 40% delas, deixando os pads sem solda. Mudamos para 0,3 mm e adicionamos tamp\u00f5es na m\u00e1scara de solda. Problema resolvido.)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-43bb523 wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"43bb523\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-primary wd-title-style-underlined wd-title-size-large text-left\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<h2 class=\"woodmart-title-container title wd-fontsize-xxl\">Resultados e Desempenho<\/h2> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-82d4c97 color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"82d4c97\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Executamos o primeiro lote. Como n\u00e3o houve teste funcional, utilizamos inspe\u00e7\u00e3o por raio-X para a Inspe\u00e7\u00e3o do Primeiro Artigo (FAI).<\/p><p><strong>Os Dados:<\/strong><\/p><ul><li><em>Taxa de Anula\u00e7\u00e3o:<\/em> A radiografia revelou uma \u00e1rea m\u00e9dia de vazio de 12-15%.<\/li><\/ul><p>Norma: A norma IPC-A-610F estabelece que uma porcentagem de \u00e1rea vazia inferior a 30% para esferas de BGA \u00e9 considerada aceit\u00e1vel.<\/p><p>Meta de Confiabilidade: Para ciclos de alta pot\u00eancia, <a href=\"https:\/\/www.hisco.com\/UserFiles\/Images\/LandingPages\/Alpha\/May2019\/Effect_Of_Voids_On_Thermomechanical_Reliability_Of_Solder_Joints.pdf\" target=\"_blank\" rel=\"nofollow noopener\">&lt;5% \u00e9 ideal<\/a>, mas &lt;20% \u00e9 aceit\u00e1vel. Alcan\u00e7amos a zona de seguran\u00e7a sem precisar de fornos de refluxo a v\u00e1cuo, que s\u00e3o caros.<\/p><ul><li><em>Defeitos:<\/em> Zero defeitos do tipo \u201ccabe\u00e7a no travesseiro\u201d. O molho estendido funcionou.<\/li><li><em>Custo:<\/em> O projeto NRE ficou cerca de 20% abaixo do modelo de precifica\u00e7\u00e3o por variante.<\/li><li><em>Tempo:<\/em> 18 dias da confirma\u00e7\u00e3o do arquivo ao envio.<\/li><\/ul><p><strong>A Falha Sobre a Qual Ningu\u00e9m Fala<\/strong><\/p><p>No lote #3, 15% de placas apresentaram 12% de falhas de preenchimento. Causa raiz: abertura do est\u00eancil entupida durante a impress\u00e3o. O operador n\u00e3o percebeu o problema por 30 minutos. Adotamos a inspe\u00e7\u00e3o autom\u00e1tica da pasta de solda (SPI) ap\u00f3s esse incidente. Custo: $2.100, despesa \u00fanica.<\/p><p>(O engenheiro da TM perguntou se poder\u00edamos pular o raio-X para economizar dinheiro. Recusamos. A aus\u00eancia de teste funcional implica na obrigatoriedade de valida\u00e7\u00e3o de processo. Eles entenderam.)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5e5baa3 wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"5e5baa3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-primary wd-title-style-underlined wd-title-size-large text-left\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<h2 class=\"woodmart-title-container title wd-fontsize-xxl\">Considera\u00e7\u00f5es Finais<\/h2> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7bbfb84 color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"7bbfb84\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Volume baixo n\u00e3o significa baixa qualidade. Os lotes de 25 unidades da TM recebem o mesmo rigor de engenharia que as execu\u00e7\u00f5es de 10.000 unidades.<\/p><p>Principais li\u00e7\u00f5es:<\/p><ul><li>A paineliza\u00e7\u00e3o economiza dinheiro, mas exige disciplina de fiduciais<\/li><li>O controle de vazio \u00e9 ci\u00eancia de materiais, n\u00e3o sorte.<\/li><li><a href=\"https:\/\/iconnect007.com\/article\/129831\/beyond-design-the-impact-of-filled-vias-on-thermal-and-signal-integrity\/129834\/design\" target=\"_blank\" rel=\"nofollow noopener\">Placas grossas exigem perfis t\u00e9rmicos mais longos<\/a><\/li><li>O projeto de vias requer c\u00e1lculo, n\u00e3o regras pr\u00e1ticas.<\/li><\/ul><p>O \u201cHammerhead Dyno\u201d foi entregue dentro do prazo. Os clientes da TM medem a pot\u00eancia do amplificador com uma incerteza inferior a 0,11 TP3T. \u00c9 isso que importa.<\/p><p>(Pr\u00f3ximo desafio: a TM deseja adicionar uma variante de 4 \u03a9. Estamos verificando se o layout atual do painel disp\u00f5e de espa\u00e7o suficiente. Talvez seja necess\u00e1rio um painel 8% maior. Or\u00e7amento pendente.)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"wd-negative-gap elementor-element elementor-element-1620e06 e-flex e-con-boxed e-con e-parent\" data-id=\"1620e06\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-002415e e-con-full e-flex e-con e-child\" data-id=\"002415e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-d03ca06 e-con-full e-flex e-con e-child\" data-id=\"d03ca06\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9c373aa wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"9c373aa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-primary wd-title-style-underlined wd-title-size-large text-left\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<h2 class=\"woodmart-title-container title wd-fontsize-xxl\">Perguntas Frequentes (FAQ)<\/h2> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a8ce272 elementor-widget elementor-widget-wd_accordion\" data-id=\"a8ce272\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n\t\t<div class=\"wd-accordion wd-style-default wd-titles-left wd-opener-pos-left wd-opener-style-arrow\" data-state=\"first\">\n\t\t\t\t\t\t\t\n\t\t\t\t<div class=\"wd-accordion-item\">\n\t\t\t\t\t<div class=\"wd-accordion-title wd-role-btn wd-active\" data-accordion-index=\"0\" tabindex=\"0\">\n\t\t\t\t\t\t<div class=\"wd-accordion-title-text\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span>\n\t\t\t\t\t\t\t\t1. Por que os vazios prejudicam a precis\u00e3o das medi\u00e7\u00f5es de \u00e1udio?\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<span class=\"wd-accordion-opener\"><\/span>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<div class=\"wd-accordion-content wd-entry-content wd-active\" data-accordion-index=\"0\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t<p>Os vazios s\u00e3o bolhas de g\u00e1s (condutividade t\u00e9rmica de 0,026 W\/mK) presas na solda (50 W\/mK). Eles criam pontos quentes. Um resistor com TCR nominal de 25 ppm\/\u00b0C pode apresentar uma varia\u00e7\u00e3o de 50 a 100 ppm localmente sob um ponto quente. No caso de cargas fict\u00edcias de precis\u00e3o, isso gera erros de medi\u00e7\u00e3o. Nosso projeto em forma de janela mant\u00e9m os vazios abaixo do 10%.<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t<div class=\"wd-accordion-item\">\n\t\t\t\t\t<div class=\"wd-accordion-title wd-role-btn\" data-accordion-index=\"1\" tabindex=\"0\">\n\t\t\t\t\t\t<div class=\"wd-accordion-title-text\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span>\n\t\t\t\t\t\t\t\tMeu PCB tem 2,0 mm de espessura. Necessito de processamento especial?\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<span class=\"wd-accordion-opener\"><\/span>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<div class=\"wd-accordion-content wd-entry-content\" data-accordion-index=\"1\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t<p>Sim. Uma placa de circuito impresso (PCI) com 2,0 mm de espessura requer um tempo de imers\u00e3o de 110 a 130 segundos para atingir o equil\u00edbrio t\u00e9rmico, enquanto uma PCI padr\u00e3o de 1,6 mm leva menos tempo para alcan\u00e7ar o equil\u00edbrio t\u00e9rmico. Sem isso, voc\u00ea obt\u00e9m uma varia\u00e7\u00e3o de temperatura superior a 15\u00b0C na placa. Soldas frias garantidas nas bordas. Use um perfil de \"soak\" estendido e verifique as temperaturas das bordas com termopares.<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t<div class=\"wd-accordion-item\">\n\t\t\t\t\t<div class=\"wd-accordion-title wd-role-btn\" data-accordion-index=\"2\" tabindex=\"0\">\n\t\t\t\t\t\t<div class=\"wd-accordion-title-text\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span>\n\t\t\t\t\t\t\t\t3. Quanto realmente se economiza com a paineliza\u00e7\u00e3o heterog\u00eanea?\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<span class=\"wd-accordion-opener\"><\/span>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<div class=\"wd-accordion-content wd-entry-content\" data-accordion-index=\"2\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t<p>Para as sete variantes do TM: $2.450 separadas vs. $1.950 combinadas = $500 economizadas. Isso representa uma redu\u00e7\u00e3o de 20% em NRE. A economia de material acrescenta mais $180 por painel. No entanto, o tempo de projeto aumenta em 15 horas para o trabalho de CAM. O benef\u00edcio l\u00edquido s\u00f3 se manifesta se forem processados mais de 3 lotes. A conta bate a partir do lote #4.<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t<div class=\"wd-accordion-item\">\n\t\t\t\t\t<div class=\"wd-accordion-title wd-role-btn\" data-accordion-index=\"3\" tabindex=\"0\">\n\t\t\t\t\t\t<div class=\"wd-accordion-title-text\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span>\n\t\t\t\t\t\t\t\t4. Qual \u00e9 o design \u00f3timo de via?\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<span class=\"wd-accordion-opener\"><\/span>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<div class=\"wd-accordion-content wd-entry-content\" data-accordion-index=\"3\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t<p>Para dissipa\u00e7\u00e3o de 20W: 25 vias, di\u00e2metro de 0.3mm, passo de 0.5mm, posicionadas diretamente sob o pad. Conectar a plano de cobre de 2oz. Isso resulta em R\u03b8JA \u2248 2\u00b0C\/W. Vias maiores arriscam o arraste de solda (solder wicking). Vias menores aumentam a resist\u00eancia. O di\u00e2metro de 0.3mm \u00e9 o ponto ideal para o compromisso entre o preenchimento da via e o arraste de solda. (N\u00e3o testado: 0.25mm pode funcionar melhor com plug de via. Requer verifica\u00e7\u00e3o.)<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t<div class=\"wd-accordion-item\">\n\t\t\t\t\t<div class=\"wd-accordion-title wd-role-btn\" data-accordion-index=\"4\" tabindex=\"0\">\n\t\t\t\t\t\t<div class=\"wd-accordion-title-text\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span>\n\t\t\t\t\t\t\t\t5. Podemos pular a inspe\u00e7\u00e3o por raio-x?\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<span class=\"wd-accordion-opener\"><\/span>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<div class=\"wd-accordion-content wd-entry-content\" data-accordion-index=\"4\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t<p>N\u00e3o. Para produtos sem teste, o raio-X \u00e9 sua \u00fanica forma de valida\u00e7\u00e3o. Custo: $0,45 por placa. Ignorar essa etapa significa enviar o produto sem verifica\u00e7\u00e3o. Detectamos um incidente de abertura entupida que afetou 15 placas. Sem o raio-X, essas placas teriam sido enviadas. A decis\u00e3o \u00e9 sua.<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7099630 elementor-widget elementor-widget-shortcode\" data-id=\"7099630\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">\t\t\t<link rel=\"stylesheet\" id=\"elementor-post-36259-css\" href=\"https:\/\/pcbcool.com\/wp-content\/uploads\/elementor\/css\/post-36259.css?ver=1783499901\" type=\"text\/css\" media=\"all\">\n\t\t\t\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"36259\" class=\"elementor elementor-36259\" data-elementor-post-type=\"cms_block\">\n\t\t\t\t<div class=\"wd-negative-gap elementor-element elementor-element-0bd0376 e-flex e-con-boxed e-con e-parent\" data-id=\"0bd0376\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-0c2ef25 e-con-full e-flex e-con e-child\" data-id=\"0c2ef25\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-55409b5 e-con-full e-flex e-con e-child\" data-id=\"55409b5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6020423 elementor-widget elementor-widget-image\" data-id=\"6020423\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"224\" height=\"224\" src=\"https:\/\/pcbcool.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/pcbcool.com\/wp-content\/uploads\/2026\/01\/Andy.jpg\" class=\"wd-lazy-fade attachment-full size-full wp-image-36265\" alt=\"Andy\" srcset=\"\" data-srcset=\"https:\/\/pcbcool.com\/wp-content\/uploads\/2026\/01\/Andy.jpg 224w, https:\/\/pcbcool.com\/wp-content\/uploads\/2026\/01\/Andy-150x150.jpg 150w\" sizes=\"auto, (max-width: 224px) 100vw, 224px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2f36583 e-con-full e-flex e-con e-child\" data-id=\"2f36583\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e12b0a2 wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"e12b0a2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-default wd-title-style-default wd-title-size-default text-left\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<div class=\"woodmart-title-container title wd-fontsize-l\">Andy | Especialista em Fabrica\u00e7\u00e3o e Montagem de PCBs<\/div> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9dc5f9a e-con-full e-flex e-con e-child\" data-id=\"9dc5f9a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9ecc86c color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"9ecc86c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Andy \u00e9 um profissional experiente na ind\u00fastria de placas de circuito impresso (PCBs), com d\u00e9cadas de experi\u00eancia em fabrica\u00e7\u00e3o, montagem e suporte ao cliente de PCBs. Na PCBCool, ele lidera a equipe de marketing e auxilia na transforma\u00e7\u00e3o de experi\u00eancias pr\u00e1ticas de projetos em conte\u00fado t\u00e9cnico \u00fatil para engenheiros, compradores e desenvolvedores de produtos.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-80d28ef elementor-widget elementor-widget-html\" data-id=\"80d28ef\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<div class=\"custom-btn-wrapper\">\r\n  <a href=\"https:\/\/pcbcool.com\/pt-br\/author\/andy\/\" class=\"custom-btn\">Leia Mais Artigos de Andy \u2192<\/a>\r\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Um estudo de caso de montagem de PCB para o dispositivo de teste de \u00e1udio Hammerhead Dyno, detalhando como a PCBCool resolveu problemas de vazios em resistores de pot\u00eancia BTC, desequil\u00edbrio t\u00e9rmico e restri\u00e7\u00f5es de baixo volume atrav\u00e9s da otimiza\u00e7\u00e3o de processos.<\/p>","protected":false},"author":4,"featured_media":34915,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"slim_seo":{"title":"Montagem de PCB de \u00c1udio de Alta Pot\u00eancia e Baixo Volume | PCBCool","description":"Um estudo de caso de montagem de PCB para o dispositivo de teste de \u00e1udio Hammerhead Dyno, detalhando como a PCBCool resolveu problemas de vazios em resistores de pot\u00eancia BTC, desequil\u00edbrio t\u00e9rmico e restri\u00e7\u00f5es de baixo volume atrav\u00e9s da otimiza\u00e7\u00e3o de processos."},"footnotes":""},"categories":[116],"tags":[],"post_folder":[],"class_list":["post-34836","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-case-studies"],"_links":{"self":[{"href":"https:\/\/pcbcool.com\/pt-br\/wp-json\/wp\/v2\/posts\/34836","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pcbcool.com\/pt-br\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pcbcool.com\/pt-br\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pcbcool.com\/pt-br\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/pcbcool.com\/pt-br\/wp-json\/wp\/v2\/comments?post=34836"}],"version-history":[{"count":0,"href":"https:\/\/pcbcool.com\/pt-br\/wp-json\/wp\/v2\/posts\/34836\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pcbcool.com\/pt-br\/wp-json\/wp\/v2\/media\/34915"}],"wp:attachment":[{"href":"https:\/\/pcbcool.com\/pt-br\/wp-json\/wp\/v2\/media?parent=34836"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pcbcool.com\/pt-br\/wp-json\/wp\/v2\/categories?post=34836"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pcbcool.com\/pt-br\/wp-json\/wp\/v2\/tags?post=34836"},{"taxonomy":"post_folder","embeddable":true,"href":"https:\/\/pcbcool.com\/pt-br\/wp-json\/wp\/v2\/post_folder?post=34836"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}