{"id":35012,"date":"2025-12-25T17:12:19","date_gmt":"2025-12-25T09:12:19","guid":{"rendered":"https:\/\/pcbcool.com\/?p=35012"},"modified":"2026-01-15T19:11:59","modified_gmt":"2026-01-15T11:11:59","slug":"esp32-pcb-failure-case-study-on-power-and-rf-layout","status":"publish","type":"post","link":"https:\/\/pcbcool.com\/pt-br\/case-studies\/esp32-pcb-failure-case-study-on-power-and-rf-layout\/","title":{"rendered":"Estudo de Caso de Falha de PCB ESP32 em Layout de Energia e RF"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"35012\" class=\"elementor elementor-35012\" 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-78ebb0a color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"78ebb0a\" 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>Um tema recorrente em nosso laborat\u00f3rio de an\u00e1lise de falhas de PCB \u00e9:\u201c<em>Funcionou na protoboard \u2014 por que n\u00e3o funciona na placa?<\/em>\u201dRecentemente, um cliente submeteu um lote de <strong>Monitores ambientais baseados em ESP32<\/strong> que passou nos testes de bancada, mas <strong>apresentou falha em campo a uma taxa de 68%<\/strong>. O firmware e a lista de materiais (BoM) permaneceram inalterados em rela\u00e7\u00e3o ao prot\u00f3tipo. A \u00fanica vari\u00e1vel? O <strong>Placa de circuito impresso<\/strong>.<\/p><p>Isto n\u00e3o \u00e9 uma anomalia. De acordo com as Diretrizes de Design para Manufaturabilidade da IPC (<em>IPC-7351C, 2024<\/em>), <strong>mais de 73% de falhas na primeira inf\u00e2ncia<\/strong> em dispositivos de IoT decorrem de <strong>quest\u00f5es de integridade de sinal e energia induzidas pelo layout<\/strong>, n\u00e3o defeitos de componentes. Abaixo, <a href=\"https:\/\/pcbcool.com\/pt-br\/\">PCBCool<\/a> detalha a investiga\u00e7\u00e3o forense e os princ\u00edpios corretivos de design de PCB que, em \u00faltima an\u00e1lise, resolveram o problema.<\/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\">Escopo do Projeto e Manifesta\u00e7\u00e3o de Falhas<\/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-4badf82 color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"4badf82\" 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 dispositivo usava um <strong>ESP32-WROOM-32<\/strong>, <strong>DS18B20 (sensor de temperatura 1-Wire)<\/strong>, e <strong>Transceptor LoRa SX1276<\/strong>, alimentado por um <strong>C\u00e9lula 18650<\/strong>. Requisitos-chave:<\/p><ul><li>Transmitir dados do sensor a cada 15 minutos<\/li><li>Operar por \u2265 6 meses com uma \u00fanica carga<\/li><li>Funciona de \u221210\u00b0C a +50\u00b0C<\/li><\/ul><p>Unidades de bancada (protoboard + jumpers) alcan\u00e7adas <strong>Tempo de atividade do 100% ao longo de 21 dias<\/strong>. No entanto, <strong>42 de 62 unidades fabricadas congelaram<\/strong> ap\u00f3s 3\u20137 transmiss\u00f5es, sempre durante <strong>Explos\u00f5es de Transmiss\u00e3o LoRa<\/strong>.<\/p><p>A disparidade entre uma protoboard e uma PCB reside na <em>\u201ccaos controlado\u201d dos parasitas<\/em>. Em uma protoboard, os longos fios jumper e as tiras de barramento internas agem como grandes indutores e capacitores n\u00e3o intencionais. Embora isso geralmente degrade sinais de alta velocidade, ocasionalmente pode atuar como um filtro passa-baixa, amortecendo ru\u00eddos de chaveamento de alta frequ\u00eancia de uma fonte de alimenta\u00e7\u00e3o mal regulada.<\/p><p>Quando o projeto migra para uma PCB, esses \u201c<em>Filtros acidentais<\/em>\u201ddesaparecer. As trilhas ficam bem mais curtas, e os planos de cobre permitem tempos de resposta transit\u00f3rios muito mais r\u00e1pidos. Se a estrat\u00e9gia de desacoplamento for falha, o consumo repentino de corrente de um r\u00e1dio LoRa \u2014 frequentemente saltando de microamperes em modo de suspens\u00e3o para <strong>120 mA em milissegundos<\/strong>\u2014cria um massivo <strong>V = L di\/dt queda de tens\u00e3o<\/strong>. Sem a natureza \u201clenta\u201d da protoboard para atrasar as coisas, o ESP32 experimenta um *brownout* acentuado na escala de nanossegundos, o que aciona um travamento da CPU em vez de um *reset* limpo. Isso explica por que os dispositivos congelaram em vez de reiniciar.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0401398 wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"0401398\" 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\">Metodologia de Diagn\u00f3stico<\/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-8034c0e color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"8034c0e\" 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>Realizamos as seguintes t\u00e9cnicas de diagn\u00f3stico:<\/p><ul><li>Termografia (FLIR E8) durante ciclos de TX<\/li><li>Sondagem de barramento de energia (Keysight InfiniiVision, 1 GSa\/s)<\/li><li>Inspe\u00e7\u00e3o por raios-X (Nordson DAGE XD7600) para vazios de solda<\/li><li>Verifica\u00e7\u00e3o cruzada Gerber vs. esquem\u00e1tico (usando Altium 24 DRC)<\/li><\/ul><p>Como resultado, tr\u00eas falhas espec\u00edficas da PCB foram identificadas.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1230fb3 wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"1230fb3\" 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\">Descri\u00e7\u00e3o de defeitos e a\u00e7\u00f5es corretivas<\/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-68cc48e wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"68cc48e\" 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\">Defeito 1: Divis\u00e3o do Plano de Terra Causando Queda de Tens\u00e3o<\/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-f5b1435 color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"f5b1435\" 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 layout roteou <strong>120 mA Corrente de TX LoRa<\/strong> atrav\u00e9s de uma trilha aterrada estreita (0,3 mm) que serpenteava entre capacitores de desacoplamento, efetivamente dividindo o plano de terra. Isso criou uma \u00e1rea localizada <strong>pulso de terra de at\u00e9 420 mV<\/strong> (Fig. 1), descartando o ESP32 <strong>Sa\u00edda de 3.3V<\/strong> abaixo do limite de subtens\u00e3o de 2,97V<em>Manual de Refer\u00eancia T\u00e9cnica ESP32 v5.1, Se\u00e7\u00e3o 2.4<\/em>).<\/p><p><strong>A\u00e7\u00e3o Corretiva:<\/strong><\/p><ul><li>Implemente um plano de terra s\u00f3lido e ininterrupto na Camada 2.<\/li><li>Roteie todos os caminhos de alta corrente (bateria \u2192 PMIC \u2192 carga) apenas na Camada 1.<\/li><li>Adicionar vias de costura (0,3 mm, passo de 1,5 mm) ao redor do m\u00f3dulo ESP32 e LoRa, conforme as Diretrizes de Design de Hardware da Espressif (v2.3, 2025).<\/li><li>Posicione capacitores de desacoplamento de 10 \u00b5F + 100 nF a uma dist\u00e2ncia de at\u00e9 5 mm de cada pino VDD.<\/li><\/ul><div id=\"attachment_35104\" style=\"width: 776px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-35104\" class=\"wd-lazy-fade wp-image-35104 size-full\" src=\"https:\/\/pcbcool.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Oscilloscope-capture-of-3.3V-rail-during-LoRa-TX.jpg\" alt=\"Captura de oscilosc\u00f3pio do barramento de 3,3V durante a transmiss\u00e3o LoRa\" width=\"766\" height=\"381\" srcset=\"\" data-srcset=\"https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Oscilloscope-capture-of-3.3V-rail-during-LoRa-TX.jpg 766w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Oscilloscope-capture-of-3.3V-rail-during-LoRa-TX-150x75.jpg 150w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Oscilloscope-capture-of-3.3V-rail-during-LoRa-TX-600x298.jpg 600w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/Oscilloscope-capture-of-3.3V-rail-during-LoRa-TX-400x199.jpg 400w\" sizes=\"auto, (max-width: 766px) 100vw, 766px\" \/><p id=\"caption-attachment-35104\" class=\"wp-caption-text\">Figura 1 Captura de oscilosc\u00f3pio da linha de 3,3V durante a transmiss\u00e3o LoRa<\/p><\/div><p><span style=\"font-size: 15px;\">A f\u00edsica do caminho de retorno \u00e9 frequentemente o aspecto mais negligenciado no projeto de IoT. Em circuitos CC, a corrente segue o caminho de menor resist\u00eancia; no entanto, nas frequ\u00eancias de comuta\u00e7\u00e3o observadas em LoRa (barramento SPI a 10 MHz) e ESP32 (80\/160 MHz), a corrente segue o <strong>caminho de menor indut\u00e2ncia<\/strong>, que corre diretamente sob a trilha de sinal no plano de refer\u00eancia. Ao dividir o plano de terra com trilhas estreitas, a corrente de retorno foi for\u00e7ada a dar uma volta longa e indutiva ao redor da divis\u00e3o.<\/span><\/p><p>Este loop atua como uma antena, irradiando EMI e criando um caminho de retorno de alta imped\u00e2ncia. O resultante \u201c<strong>Rebote de Aterramento<\/strong>\u201d eleva efetivamente a refer\u00eancia de 0V do MCU em rela\u00e7\u00e3o \u00e0 fonte de alimenta\u00e7\u00e3o. Para o ESP32, o trilho de 3.3V parece cair significativamente, mesmo que a tens\u00e3o da bateria permane\u00e7a est\u00e1vel. A continuidade total do cobre n\u00e3o \u00e9 suficiente; um caminho de retorno de baixa imped\u00e2ncia \u00e9 necess\u00e1rio para manter uma refer\u00eancia de tens\u00e3o est\u00e1vel durante opera\u00e7\u00f5es de RF de alto ganho.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c7001f2 wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"c7001f2\" 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\">Defeito 2: Viola\u00e7\u00e3o de Tempo do 1-Wire Devido a Capacit\u00e2ncia Excessiva do Tra\u00e7o<\/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-b32b22d color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"b32b22d\" 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 <strong>DS18B20<\/strong> operado em modo de alimenta\u00e7\u00e3o parasita, necessitando de temporiza\u00e7\u00e3o precisa conforme a folha de dados do DS18B20 (<em>Maxim Integrated, Rev. 5, 2023<\/em>):<\/p><ul><li>\u2264 1 \u00b5s \u2192 capacit\u00e2ncia \u2264 15 pF<\/li><li>Comprimento m\u00e1ximo equivalente do cabo: 15 m<\/li><\/ul><p>A PCB utilizou <strong>rastreador de 92 mm<\/strong> de ESP32 GPIO4 \u2192 DS18B20, com um fio e uma rede VDD\/DQ compartilhada. Capacit\u00e2ncia total medida: <strong>27 pF \u2192 tempo de subida: 1,8 \u00b5s<\/strong>. O sensor reiniciou durante a convers\u00e3o de temperatura, causando travamentos semelhantes aos do I\u00b2C.<\/p><div id=\"attachment_35108\" style=\"width: 823px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-35108\" class=\"wd-lazy-fade wp-image-35108 size-full\" src=\"https:\/\/pcbcool.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/1-Wire-Signal-Integrity-Comparison.jpg\" alt=\"1 Compara\u00e7\u00e3o de Integridade de Sinal de Fio \u00danico\" width=\"813\" height=\"354\" srcset=\"\" data-srcset=\"https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/1-Wire-Signal-Integrity-Comparison.jpg 813w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/1-Wire-Signal-Integrity-Comparison-150x65.jpg 150w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/1-Wire-Signal-Integrity-Comparison-600x261.jpg 600w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/1-Wire-Signal-Integrity-Comparison-400x174.jpg 400w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/1-Wire-Signal-Integrity-Comparison-768x334.jpg 768w\" sizes=\"auto, (max-width: 813px) 100vw, 813px\" \/><p id=\"caption-attachment-35108\" class=\"wp-caption-text\">Figura 2: Comparativo de Integridade de Sinal 1-Wire<\/p><\/div><p><strong>A\u00e7\u00e3o Corretiva:<\/strong><\/p><ul><li>Limite o tra\u00e7o de 1-Wire a \u226430 mm, sem vias.<\/li><li>Utilize malhas VDD e DQ separadas (sem roteamento compartilhado).<\/li><li>Coloque um resistor de pull-up de 4,7 k\u03a9 no sensor, n\u00e3o no microcontrolador.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-937ae4f wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"937ae4f\" 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\">Defeito 3: Interfer\u00eancia de RF devido a Isolamento Inadequado<\/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-c2ad126 color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"c2ad126\" 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 <strong>Linha de alimenta\u00e7\u00e3o da antena SX1276<\/strong> passou diretamente sob o oscilador de cristal de 40 MHz do ESP32. A an\u00e1lise de espectro mostrou \u2019spurs\" de 22 dBc nas frequ\u00eancias centrais do LoRa. Pior: o preenchimento de cobre invadiu at\u00e9 0,3 mm da microfita de 50 \u03a9, detunando a imped\u00e2ncia para 38 \u03a9.<\/p><div id=\"attachment_35112\" style=\"width: 258px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-35112\" class=\"wd-lazy-fade wp-image-35112 size-full\" src=\"https:\/\/pcbcool.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/RF-Layout-and-Via-Fence-Implementation.jpg\" alt=\"Implementa\u00e7\u00e3o de Layout de RF e Via Fence\" width=\"248\" height=\"233\" srcset=\"\" data-srcset=\"https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/RF-Layout-and-Via-Fence-Implementation.jpg 248w, https:\/\/pcbcool.com\/wp-content\/uploads\/2025\/12\/RF-Layout-and-Via-Fence-Implementation-150x141.jpg 150w\" sizes=\"auto, (max-width: 248px) 100vw, 248px\" \/><p id=\"caption-attachment-35112\" class=\"wp-caption-text\">Figura 3: Layout de RF e Implementa\u00e7\u00e3o de Via Fence<\/p><\/div><p><strong><span style=\"font-size: 15px;\">A\u00e7\u00e3o Corretiva:<\/span><\/strong><\/p><ul><li>Se\u00e7\u00e3o de RF redesenhada apenas na Camada 1.<\/li><li>Adicionado via fence (vias de 0,3 mm, passo de 10 mm).<\/li><li>Utilizado solucionador de campo para definir largura de trilha: 0,254 mm em n\u00facleo de FR-4 de 0,8 mm.<\/li><li>Verificado com TDR: 49,2 \u03a9 \u00b1 1,3 \u03a9.<\/li><\/ul><p>O isolamento de RF frequentemente determina se um dispositivo passa na certifica\u00e7\u00e3o FCC\/CE ou falha em campo. Quando a microfaixa de 50 \u03a9 foi desafinada para <strong>38 \u03a9<\/strong> devido ao avan\u00e7o do cobre, foi criado um <strong>Rela\u00e7\u00e3o de Onda Estacion\u00e1ria (ROE) de desalinhamento<\/strong>, causando que uma por\u00e7\u00e3o significativa da energia RF retorne para o SX1276 em vez de ser irradiada pela antena.<\/p><p>Essa energia refletida se manifesta como calor e ru\u00eddo de substrato. Adicionalmente, a coloca\u00e7\u00e3o da linha de alimenta\u00e7\u00e3o da antena pr\u00f3xima ao cristal de 40 MHz introduziu riscos de \u201cinjection locking\u201d, onde rajadas de RF de alta pot\u00eancia poderiam puxar a frequ\u00eancia do cristal, causando jitter no clock do MCU ou desvio na frequ\u00eancia LoRa.<\/p><p>A blindagem atua como uma gaiola de Faraday dentro das camadas da PCB, desviando os campos eletromagn\u00e9ticos laterais para o terra antes que eles possam interferir com o circuito de temporiza\u00e7\u00e3o anal\u00f3gica sens\u00edvel do ESP32.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-63315af wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"63315af\" 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\">Lista de Verifica\u00e7\u00e3o para Design de PCB com ESP32 para Confiabilidade<\/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-463a197 color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"463a197\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<table><thead><tr><th>Par\u00e2metro<\/th><th>Risco se Ignorado<\/th><th>Regra de Projeto<\/th><th>Fonte<\/th><\/tr><\/thead><tbody><tr><td>Pinos de amarra\u00e7\u00e3o (GPIO0 \/ 2 \/ 15)<\/td><td>Erro no modo de inicializa\u00e7\u00e3o<\/td><td>Resistor de pull-up \u226510 k\u03a9; n\u00e3o conduza ativamente durante a inicializa\u00e7\u00e3o<\/td><td>ESP32 TRM \u00a73.1<\/td><\/tr><tr><td>Pinos ADC (36 \/ 39)<\/td><td>Deriva de sensor<\/td><td>Mantenha &gt;10 mm de reguladores de chaveamento; evite roteamento na camada superior sob o ESP32<\/td><td>Guia de Hardware ESP32 \u00a74.2<\/td><\/tr><tr><td>Pinos de flash (6\u201311)<\/td><td>Brickar<\/td><td>Sem roteamento permitido; cobrir com cobre de aterramento<\/td><td>ESP32 Guia de Hardware \u00a72.3<\/td><\/tr><tr><td>Corrente de suspens\u00e3o profunda<\/td><td>Descarga da bateria<\/td><td>Utilize power gating com MOSFET; verifique &lt;15 \u00b5A no total<\/td><td>ESP32 TRM \u00a710.3<\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d571fed wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"d571fed\" 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 Ap\u00f3s o Redesign<\/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-abd94a6 color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"abd94a6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li>Taxa de falha em campo: 68% \u2192 1,2%<\/li><li>Dura\u00e7\u00e3o m\u00e9dia da bateria: 4,2 meses \u2192 7,1 meses<\/li><li>Sucesso do pacote LoRa: 71% \u2192 99,4%<\/li><\/ul>\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>Uma protoboard valida a funcionalidade. Uma PCB valida a robustez. Seu layout n\u00e3o \u00e9 apenas um esquema; \u00e9 um sistema mec\u00e2nico, t\u00e9rmico e eletromagn\u00e9tico. Projete-o como tal.<\/p><p>Para dispositivos de IoT e monitoramento ambiental, confian\u00e7a <a href=\"https:\/\/pcbcool.com\/pt-br\/\">PCBCool<\/a> \u2014 possu\u00edmos vasta experi\u00eancia em fabrica\u00e7\u00e3o de PCBs, prototipagem e montagem turnkey para esta ind\u00fastria. Da integridade de pot\u00eancia \u00e0 otimiza\u00e7\u00e3o de RF, ajudamos a transformar seu prot\u00f3tipo em placa de ensaio em um produto comprovado em campo.<\/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 meu projeto ESP32 funcionou em uma protoboard, mas falhou em uma PCB?\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>Uma protoboard pode mascarar problemas de integridade de sinal e energia devido a fios jumper longos que atuam como filtros passa-baixa acidentais. Em uma PCB, as trilhas s\u00e3o mais curtas e os planos de cobre respondem mais rapidamente, expondo quedas de tens\u00e3o e outras falhas relacionadas ao layout.<\/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\t2. Como posso prevenir quedas de energia durante as transmiss\u00f5es LoRa?\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>Garanta planos de terra s\u00f3lidos e ininterruptos, roteie adequadamente os caminhos de alta corrente e posicione capacitores de desacoplamento pr\u00f3ximos aos pinos VDD. Verifique tamb\u00e9m se h\u00e1 divis\u00f5es no plano de terra que possam for\u00e7ar as correntes de retorno a se tornarem longos loops indutivos.<\/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. Quais s\u00e3o os erros comuns com sensores 1-Wire, como o DS18B20?\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>Comprimento de trilha excessivo, capacit\u00e2ncia elevada ou redes VDD\/DQ compartilhadas podem causar viola\u00e7\u00f5es de tempo e rein\u00edcios do sensor.<\/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. Como evitar interfer\u00eancia de RF entre clocks do LoRa e do MCU?\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>Mantenha separa\u00e7\u00e3o adequada entre as linhas de alimenta\u00e7\u00e3o da antena e os cristais\/osciladores, utilize barreiras para isolar \u00e1reas sens\u00edveis e valide a imped\u00e2ncia com solucionadores de campo e medi\u00e7\u00f5es de TDR.<\/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. Qual \u00e9 a principal considera\u00e7\u00e3o para um design de PCB confi\u00e1vel para ESP32?\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>Trate sua PCI como um sistema mec\u00e2nico, t\u00e9rmico e eletromagn\u00e9tico, n\u00e3o apenas um esquema. Preste aten\u00e7\u00e3o aos caminhos de retorno, desacoplamento e isolamento de RF, e sempre teste os projetos em condi\u00e7\u00f5es reais de campo.<\/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-e3320e6 elementor-widget elementor-widget-shortcode\" data-id=\"e3320e6\" 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-36230-css\" href=\"https:\/\/pcbcool.com\/wp-content\/uploads\/elementor\/css\/post-36230.css?ver=1783499447\" type=\"text\/css\" media=\"all\">\n\t\t\t\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"36230\" class=\"elementor elementor-36230\" data-elementor-post-type=\"cms_block\">\n\t\t\t\t<div class=\"wd-negative-gap elementor-element elementor-element-b29da14 e-flex e-con-boxed e-con e-parent\" data-id=\"b29da14\" 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-daaf6b0 e-con-full e-flex e-con e-child\" data-id=\"daaf6b0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-e3028c4 e-con-full e-flex e-con e-child\" data-id=\"e3028c4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b85dd61 elementor-widget elementor-widget-image\" data-id=\"b85dd61\" 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=\"194\" height=\"194\" src=\"https:\/\/pcbcool.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/pcbcool.com\/wp-content\/uploads\/2026\/01\/Loki.jpg\" class=\"wd-lazy-fade attachment-full size-full wp-image-36233\" alt=\"Loki\" srcset=\"\" data-srcset=\"https:\/\/pcbcool.com\/wp-content\/uploads\/2026\/01\/Loki.jpg 194w, https:\/\/pcbcool.com\/wp-content\/uploads\/2026\/01\/Loki-150x150.jpg 150w\" sizes=\"auto, (max-width: 194px) 100vw, 194px\" \/>\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-35db7cb e-con-full e-flex e-con e-child\" data-id=\"35db7cb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a9b0585 wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"a9b0585\" 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\">Loki | Especialista em Com\u00e9rcio Internacional e Fabrica\u00e7\u00e3o de Placas de Circuito Impresso (PCI)<\/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-e54326e e-con-full e-flex e-con e-child\" data-id=\"e54326e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-12b46da color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"12b46da\" 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>Loki atua no com\u00e9rcio internacional e em PCBs desde 2021, com experi\u00eancia em fabrica\u00e7\u00e3o, montagem e comunica\u00e7\u00e3o com clientes de PCBs. Na PCBCool, ele apoia a publica\u00e7\u00e3o de conte\u00fado t\u00e9cnico e auxilia na conex\u00e3o de solicita\u00e7\u00f5es de clientes com o gerente de conta adequado para acompanhamento eficiente de projetos.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-678d9e6 elementor-widget elementor-widget-html\" data-id=\"678d9e6\" 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\/ps_loki\/\" class=\"custom-btn\">Leia Mais Artigos de Loki \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>Descubra como falhas no layout da placa de circuito impresso (PCB) do ESP32 causaram falhas em campo do modelo 68% em monitores ambientais de IoT e conhe\u00e7a solu\u00e7\u00f5es pr\u00e1ticas de projeto para integridade de alimenta\u00e7\u00e3o, isolamento de RF e confiabilidade dos sensores.<\/p>","protected":false},"author":5,"featured_media":36431,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"slim_seo":{"title":"Estudo de Caso de Falha em PCB ESP32 sobre Design de Layout de Energia e RF | PCBCool","description":"Descubra como falhas no layout da placa de circuito impresso (PCB) do ESP32 causaram falhas em campo do modelo 68% em monitores ambientais de IoT e conhe\u00e7a solu\u00e7\u00f5es pr\u00e1ticas de projeto para integridade de alimenta\u00e7\u00e3o, isolamento de RF e confiabilidade dos sensores."},"footnotes":""},"categories":[116],"tags":[120],"post_folder":[],"class_list":["post-35012","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-case-studies","tag-esp32"],"_links":{"self":[{"href":"https:\/\/pcbcool.com\/pt-br\/wp-json\/wp\/v2\/posts\/35012","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\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/pcbcool.com\/pt-br\/wp-json\/wp\/v2\/comments?post=35012"}],"version-history":[{"count":0,"href":"https:\/\/pcbcool.com\/pt-br\/wp-json\/wp\/v2\/posts\/35012\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pcbcool.com\/pt-br\/wp-json\/wp\/v2\/media\/36431"}],"wp:attachment":[{"href":"https:\/\/pcbcool.com\/pt-br\/wp-json\/wp\/v2\/media?parent=35012"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pcbcool.com\/pt-br\/wp-json\/wp\/v2\/categories?post=35012"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pcbcool.com\/pt-br\/wp-json\/wp\/v2\/tags?post=35012"},{"taxonomy":"post_folder","embeddable":true,"href":"https:\/\/pcbcool.com\/pt-br\/wp-json\/wp\/v2\/post_folder?post=35012"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}