{"id":6715,"date":"2025-05-26T14:31:07","date_gmt":"2025-05-26T06:31:07","guid":{"rendered":"https:\/\/topfastpcba.com\/?p=6715"},"modified":"2025-10-22T17:08:22","modified_gmt":"2025-10-22T09:08:22","slug":"what-is-pcb-relay","status":"publish","type":"post","link":"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/","title":{"rendered":"What is PCB Relay\uff1f"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_75 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u00cdndice<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#What_is_a_PCB_relay\" >O que \u00e9 um rel\u00e9 de PCB?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#Core_Advantages\" >Principais vantagens<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#1_Compact_Integration\" >1. Integra\u00e7\u00e3o compacta<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#2_Electrical_Safety\" >2.Seguran\u00e7a el\u00e9trica<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#3_Flexible_Adaptation\" >3.Adapta\u00e7\u00e3o flex\u00edvel<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#PCB_Relay_Characteristics\" >Caracter\u00edsticas do rel\u00e9 de PCB<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#1_High_voltagecurrent_carrying_capacity\" >1. Alta capacidade de transporte de tens\u00e3o\/corrente<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#2_Semiconductor_Technology_Solid_State_RelaySSR\" >2.Tecnologia de semicondutores (Rel\u00e9 de estado s\u00f3lido\/SSR)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#3_Delay_trigger_function\" >3.Fun\u00e7\u00e3o de disparo com retardo<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#4_Temperature_protection_thermal_relay\" >4.Prote\u00e7\u00e3o de temperatura (rel\u00e9 t\u00e9rmico)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#5_Frequency_protection_AC_system_specific\" >5.Prote\u00e7\u00e3o de frequ\u00eancia (espec\u00edfica do sistema CA)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#Core_Structure_Composition\" >Composi\u00e7\u00e3o da estrutura principal<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#How_does_a_PCB_relay_work\" >Como funciona um rel\u00e9 de PCB?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#1_Excitation_Stage\" >1. Est\u00e1gio de excita\u00e7\u00e3o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#2_Contact_action\" >2.A\u00e7\u00e3o de contato<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#3_Reset_stage\" >3.Reiniciar o est\u00e1gio<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#Relay_PCB_Types\" >Tipos de PCB de rel\u00e9<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#1_Single_Pole_Single_Throw_SPST_Single_Pole_Single_Throw\" >1. Polo \u00fanico de acionamento \u00fanico (SPST, Single Pole Single Throw)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#2_Single_Pole_Double_Throw_SPDT_Single_Pole_Double_Throw\" >2.Simples p\u00f3lo duplo (SPDT, Single Pole Double Throw)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#3_Double_Pole_Single_Throw_DPST_Double_Pole_Single_Throw\" >3.Duplo polo simples (DPST, Double Pole Single Throw)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#4_Double_Pole_Double_Throw_DPDT_Double_Pole_Double_Throw\" >4.Duplo polo e duplo lance (DPDT, Double Pole Double Throw)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#Basic_Design_Requirements_for_PCB_Relays\" >Requisitos b\u00e1sicos de projeto para rel\u00e9s de PCB<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#1_PCB_Material_and_Thickness\" >1. Material e espessura da placa de circuito impresso<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#2_Conductor_Copper_Foil_Thickness\" >2.Espessura do condutor (folha de cobre)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#3_Layout_and_Spacing_Specifications\" >3.Especifica\u00e7\u00f5es de layout e espa\u00e7amento<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#4_Mounting_and_Mechanical_Protection\" >4.Montagem e prote\u00e7\u00e3o mec\u00e2nica<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#5_Cleaning_and_Protection\" >5.Limpeza e prote\u00e7\u00e3o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#Design_Pitfalls_and_Common_Mistakes\" >Armadilhas de design e erros comuns<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#Relay_Selection_Reference_Table\" >Tabela de refer\u00eancia de sele\u00e7\u00e3o de rel\u00e9<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#PCB_Relay_Mounting_Techniques\" >T\u00e9cnicas de montagem de rel\u00e9s em PCB<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-31\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#I_Soldering_Process_Specifications\" >I. Especifica\u00e7\u00f5es do processo de soldagem<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-32\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#II_Installation_Electrical_Connection\" >II.Instala\u00e7\u00e3o e grampo; conex\u00e3o el\u00e9trica<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-33\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#III_Post-Installation_Steps\" >III.Etapas p\u00f3s-instala\u00e7\u00e3o<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-34\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#IV_Common_Pitfalls_Solutions\" >IV.Armadilhas e solu\u00e7\u00f5es comuns<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-35\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#Testing_PCB_Relays\" >Teste de rel\u00e9s de PCB<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-36\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/#Related_reading\" >Leitura relacionada<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_a_PCB_relay\"><\/span>O que \u00e9 um rel\u00e9 de PCB?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Os rel\u00e9s de PCB (Printed Circuit Board Relays) s\u00e3o rel\u00e9s em miniatura que podem ser montados diretamente em uma PCB para energizar e desenergizar circuitos por meio de sinais de controle de forma inteligente. Sua fun\u00e7\u00e3o principal \u00e9 controlar com seguran\u00e7a os circuitos de alta tens\u00e3o usando circuitos de baixa pot\u00eancia e, ao mesmo tempo, fornecer isolamento de corrente - uma vantagem fundamental que os interruptores transistorizados n\u00e3o podem substituir.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Core_Advantages\"><\/span>Principais vantagens<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Compact_Integration\"><\/span>1. Integra\u00e7\u00e3o compacta<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Projetado para PCBs, ele \u00e9 pequeno e leve, suporta a instala\u00e7\u00e3o do processo de furo passante e \u00e9 adequado para o layout de placas de circuito de alta densidade.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Electrical_Safety\"><\/span>2.Seguran\u00e7a el\u00e9trica<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>O isolamento f\u00edsico (separa\u00e7\u00e3o de contatos e bobinas) protege o lado de controle de baixa tens\u00e3o da interfer\u00eancia do lado de alta tens\u00e3o, reduzindo o risco do sistema.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Flexible_Adaptation\"><\/span>3.Adapta\u00e7\u00e3o flex\u00edvel<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>V\u00e1rios tipos (por exemplo, rel\u00e9s de sinal, rel\u00e9s de pot\u00eancia, rel\u00e9s de estado s\u00f3lido, etc.) est\u00e3o dispon\u00edveis para atender a diferentes requisitos de tens\u00e3o\/corrente.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"402\" src=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/PCB-Relay.jpg\" alt=\"Rel\u00e9 de PCB\" class=\"wp-image-6717\" srcset=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/PCB-Relay.jpg 600w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/PCB-Relay-300x201.jpg 300w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/PCB-Relay-150x101.jpg 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"PCB_Relay_Characteristics\"><\/span>Caracter\u00edsticas do rel\u00e9 de PCB<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_High_voltagecurrent_carrying_capacity\"><\/span>1. Alta capacidade de transporte de tens\u00e3o\/corrente<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Projetado para aplica\u00e7\u00f5es de alta tens\u00e3o (por exemplo, 220V CA\/CC em controle industrial) e alta corrente (10A+) para garantir a comuta\u00e7\u00e3o est\u00e1vel de cargas de energia.<br>Aplica\u00e7\u00f5es t\u00edpicas: controle de motores, sistemas de distribui\u00e7\u00e3o de energia, prote\u00e7\u00e3o de gabinetes el\u00e9tricos.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Semiconductor_Technology_Solid_State_RelaySSR\"><\/span>2.Tecnologia de semicondutores (Rel\u00e9 de estado s\u00f3lido\/SSR)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Projeto sem contato: Comuta\u00e7\u00e3o eletr\u00f4nica por meio de semicondutores (por exemplo, MOSFETs, tiristores), sem desgaste mec\u00e2nico e com vida \u00fatil mais longa.<br>Baixa interfer\u00eancia: evita fa\u00edscas e ru\u00eddos eletromagn\u00e9ticos dos contatos de rel\u00e9 tradicionais, adequados para equipamentos eletr\u00f4nicos de precis\u00e3o.<br>Cen\u00e1rios aplic\u00e1veis: comuta\u00e7\u00e3o de alta frequ\u00eancia (como controle de sinal PLC), ambiente \u00e0 prova de explos\u00e3o.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Delay_trigger_function\"><\/span>3.Fun\u00e7\u00e3o de disparo com retardo<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>M\u00f3dulo de rel\u00e9 de tempo integrado, o atraso da a\u00e7\u00e3o pode ser definido (por exemplo, 0,1s a 10s) para controle de tempo ou preven\u00e7\u00e3o de disparos falsos.<br>Exemplo: partida suave do motor, prote\u00e7\u00e3o de buffer de falha de energia do equipamento.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Temperature_protection_thermal_relay\"><\/span>4.Prote\u00e7\u00e3o de temperatura (rel\u00e9 t\u00e9rmico)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Integrated temperature sensor or bimetal to automatically disconnect the circuit when the ambient\/load temperature exceeds the threshold value (e.g. 85\u00b0C).<br>Objetos de prote\u00e7\u00e3o: m\u00f3dulos de pot\u00eancia, transformadores, dispositivos semicondutores de alta pot\u00eancia.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Frequency_protection_AC_system_specific\"><\/span>5.Prote\u00e7\u00e3o de frequ\u00eancia (espec\u00edfica do sistema CA)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Monitors AC frequency (e.g. 50\/60Hz) and triggers tripping when abnormal (\u00b15% offset) to prevent equipment damage.<br>Aplica\u00e7\u00f5es t\u00edpicas: prote\u00e7\u00e3o conectada \u00e0 rede do gerador, monitoramento da sa\u00edda do inversor.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Core_Structure_Composition\"><\/span>Composi\u00e7\u00e3o da estrutura principal<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Os rel\u00e9s de PCB s\u00e3o compostos principalmente pelos seguintes componentes principais:<br>Bobina eletromagn\u00e9tica: o componente do n\u00facleo que gera um campo magn\u00e9tico quando energizado.<br>Armadura (armature): pe\u00e7a m\u00f3vel de ferro acionada pelo campo magn\u00e9tico, que controla diretamente a abertura e o fechamento dos contatos.<br>Contatos: incluindo normalmente abertos (NO), normalmente fechados (NC) e comuns (COM), usados para energizar e interromper o circuito.<br>Mecanismo de mola\/reinicializa\u00e7\u00e3o: Retorna a armadura ao estado inicial dos contatos quando h\u00e1 perda de energia.<br>Yoke:Uma estrutura magneticamente condutora que concentra o campo magn\u00e9tico para aumentar<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_does_a_PCB_relay_work\"><\/span>Como funciona um rel\u00e9 de PCB?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Excitation_Stage\"><\/span>1. Est\u00e1gio de excita\u00e7\u00e3o<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Quando o circuito de controle aplica uma tens\u00e3o nominal (por exemplo, 5V CC\/24V CC) \u00e0 bobina, a corrente passa por ela.<br>A bobina gera um campo eletromagn\u00e9tico que magnetiza o garfo e atrai a armadura para o n\u00facleo.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Contact_action\"><\/span>2.A\u00e7\u00e3o de contato<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>A armadura aciona o mecanismo de contato:<br>Contato normalmente fechado (NC): interrompe a conex\u00e3o.<br>Contato normalmente aberto (NO): conex\u00e3o fechada.<br>Nesse ponto, o circuito de carga \u00e9 conectado ou cortado (dependendo da configura\u00e7\u00e3o do contato).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Reset_stage\"><\/span>3.Reiniciar o est\u00e1gio<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Quando a bobina \u00e9 desenergizada, o campo magn\u00e9tico desaparece e a for\u00e7a da mola empurra a armadura para reiniciar.<br>Os contatos retornam ao seu estado inicial (NF fechado, NA desconectado).<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"655\" height=\"427\" src=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/pcb-relay-2.jpg\" alt=\"Rel\u00e9 de PCB\" class=\"wp-image-6718\" srcset=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/pcb-relay-2.jpg 655w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/pcb-relay-2-300x196.jpg 300w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/pcb-relay-2-150x98.jpg 150w\" sizes=\"auto, (max-width: 655px) 100vw, 655px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Relay_PCB_Types\"><\/span>Tipos de PCB de rel\u00e9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The \u201cPole\u201d and \u201cThrow\u201d of a relay are key parameters describing its contact configuration, which directly affects the circuit control capability. The following are common types and characteristics of PCB relays:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Single_Pole_Single_Throw_SPST_Single_Pole_Single_Throw\"><\/span>1. Polo \u00fanico de acionamento \u00fanico (SPST, Single Pole Single Throw)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Estrutura: 1 conjunto de contatos, apenas 1 posi\u00e7\u00e3o de condu\u00e7\u00e3o (normalmente aberto ou normalmente fechado).<br>Fun\u00e7\u00e3o:A forma mais simples de comuta\u00e7\u00e3o, apenas um \u00fanico circuito pode ser energizado.<br>S\u00edmbolo:<br>\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br>\u2502 \u25cb\u2500\u2500\u2500\u2524 (Normally open type)<br>\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<br>Aplica\u00e7\u00f5es t\u00edpicas: comuta\u00e7\u00e3o de energia, controle de LED e outros cen\u00e1rios b\u00e1sicos de liga\/desliga.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Single_Pole_Double_Throw_SPDT_Single_Pole_Double_Throw\"><\/span>2. Simples polo duplo acionamento (SPDT), <a href=\"https:\/\/topfastpcba.com\/pt\/songle-spdt-miniature-pcb-mount-relay\/\">P\u00f3lo \u00fanico e duplo lance<\/a>)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Estrutura: 1 conjunto de contatos, 2 posi\u00e7\u00f5es de condu\u00e7\u00e3o (normalmente aberto + normalmente fechado + terminal comum).<br>Fun\u00e7\u00e3o:O terminal comum (COM) pode ser comutado para dois circuitos independentes, realizando dois controles seletivos.<br>S\u00edmbolo:<br>\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br>\u2502 \u25cb\u2500\u2500\u2500\u2524 (COM\u2192NO)<br>\u2502 \u25cb\u2500\u2500\u2500\u2524 (COM\u2192NC)<br>\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<br>Caracter\u00edsticas:<br>Dois estados: padr\u00e3o fechado (NC) ou padr\u00e3o desconectado (NO).<br>H\u00e1 uma breve desconex\u00e3o durante a comuta\u00e7\u00e3o (Break-before-make).<br>Aplica\u00e7\u00f5es: comuta\u00e7\u00e3o de sinal, controle de avan\u00e7o e retrocesso do motor.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Double_Pole_Single_Throw_DPST_Double_Pole_Single_Throw\"><\/span>3.Duplo polo simples (DPST, Double Pole Single Throw)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Estrutura: 2 grupos de contatos independentes, cada grupo com 1 posi\u00e7\u00e3o de condu\u00e7\u00e3o (equivalente a dois SPST em paralelo).<br>Fun\u00e7\u00e3o: Controle sincronizado de dois circuitos, mas cada grupo de contatos s\u00f3 liga e desliga uma vez.<br>S\u00edmbolo:<br>\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br>\u2502 \u25cb\u2500\u2500\u2500\u2524 (Contact 1)<br>\u2502 \u25cb\u2500\u2500\u2500\u2524 (Contact 2)<br>\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<br>Aplica\u00e7\u00e3o:Corte simult\u00e2neo da linha de fogo\/zero (por exemplo, chave de seguran\u00e7a), controle de pot\u00eancia dupla.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Double_Pole_Double_Throw_DPDT_Double_Pole_Double_Throw\"><\/span>4.Duplo polo e duplo lance (DPDT, Double Pole Double Throw)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Estrutura: 2 grupos de contatos, cada grupo com 2 posi\u00e7\u00f5es de condu\u00e7\u00e3o (equivalente a dois SPDT em paralelo).<br>Fun\u00e7\u00e3o: Comuta\u00e7\u00e3o independente de dois circuitos bidirecionais para dar suporte \u00e0 l\u00f3gica de controle complexa.<br>S\u00edmbolo:<br>\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br>\u2502 \u25cb\u2500\u2500\u2500\u2524 (COM1\u2192NO1)<br>\u2502 \u25cb\u2500\u2500\u2500\u2524 (COM1\u2192NC1)<br>\u2502 \u25cb\u2500\u2500\u2500\u2524 (COM2\u2192NO2)<br>\u2502 \u25cb\u2500\u2500\u2500\u2524 (COM2\u2192NC2)<br>\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<br>Caracter\u00edsticas:<br>Pode controlar duas cargas na dire\u00e7\u00e3o para frente\/para tr\u00e1s ao mesmo tempo (por exemplo, acionamento de ponte H de motor CC).<br>Aplica\u00e7\u00f5es: automa\u00e7\u00e3o industrial, controle de juntas de rob\u00f4s.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Basic_Design_Requirements_for_PCB_Relays\"><\/span><strong>Requisitos b\u00e1sicos de projeto para rel\u00e9s de PCB<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Para garantir a confiabilidade e a estabilidade de longo prazo dos rel\u00e9s em PCBs, o projeto deve considerar <strong>sele\u00e7\u00e3o de materiais, otimiza\u00e7\u00e3o de layout, especifica\u00e7\u00f5es de processo<\/strong>e <strong>prote\u00e7\u00e3o ambiental<\/strong>. Abaixo est\u00e3o os princ\u00edpios b\u00e1sicos de design:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_PCB_Material_and_Thickness\"><\/span><strong>1. Material e espessura da placa de circuito impresso<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Espessura do substrato<\/strong>:<\/li>\n\n\n\n<li><strong>Recomendado: 1,6 mm<\/strong> (padr\u00e3o para montagem atrav\u00e9s de orif\u00edcios) para garantir a resist\u00eancia mec\u00e2nica e minimizar a deforma\u00e7\u00e3o da solda.<\/li>\n\n\n\n<li>For high-frequency\/high-density applications, 0.8\u20131.0mm may be used (evaluate bending resistance).<\/li>\n\n\n\n<li><strong>Tipo de substrato<\/strong>:<\/li>\n\n\n\n<li><strong>Ep\u00f3xi de vidro FR-4<\/strong>: General-purpose, heat-resistant (Tg \u2265 130\u00b0C), cost-effective.<\/li>\n\n\n\n<li><strong>CEM-1\/Paper Epoxy<\/strong>: Baixo custo, adequado para aplica\u00e7\u00f5es de baixo consumo de energia.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Conductor_Copper_Foil_Thickness\"><\/span><strong>2.Espessura do condutor (folha de cobre)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Op\u00e7\u00f5es padr\u00e3o<\/strong>:<\/li>\n\n\n\n<li><strong>35\u03bcm (1oz)<\/strong>: Tra\u00e7os de sinal de baixa corrente (&lt;2A).<\/li>\n\n\n\n<li><strong>70\u03bcm (2oz)<\/strong>: High-current load paths (e.g., contact circuits, \u22655A) to reduce temperature rise.<\/li>\n\n\n\n<li><strong>Requisitos especiais<\/strong>: For high-current relays (&gt;10A), consider localized copper thickening (e.g., 105\u03bcm).<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Layout_and_Spacing_Specifications\"><\/span><strong>3.Especifica\u00e7\u00f5es de layout e espa\u00e7amento<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Prote\u00e7\u00e3o contra interfer\u00eancia eletromagn\u00e9tica (EMI)<\/strong>:<\/li>\n\n\n\n<li>Mantenha as bobinas do rel\u00e9 pelo menos <strong>5 mm de dist\u00e2ncia<\/strong> de componentes sens\u00edveis (por exemplo, MCUs, chips ADC).<\/li>\n\n\n\n<li>Manter <strong>\u22652.5mm spacing<\/strong> entre os contatos de alta tens\u00e3o e os tra\u00e7os de controle de baixa tens\u00e3o (250V CA).<\/li>\n\n\n\n<li><strong>Gerenciamento t\u00e9rmico<\/strong>:<\/li>\n\n\n\n<li>Evite coloc\u00e1-lo pr\u00f3ximo a componentes que geram calor (por exemplo, CIs de pot\u00eancia, transformadores) ou adicione vias t\u00e9rmicas.<\/li>\n\n\n\n<li>For high-temperature environments (&gt;85\u00b0C), use heat-resistant relays (e.g., OMRON G5V series).<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Mounting_and_Mechanical_Protection\"><\/span><strong>4.Montagem e prote\u00e7\u00e3o mec\u00e2nica<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Processo de solda<\/strong>:<\/li>\n\n\n\n<li><strong>Rel\u00e9s de furo passante<\/strong>: Soldagem por onda ou manual, garantindo juntas de solda completas e sem vazios.<\/li>\n\n\n\n<li><strong>Rel\u00e9s SMT<\/strong>: Reflow soldering temperature profile must match relay specifications (typically \u2264260\u00b0C).<\/li>\n\n\n\n<li><strong>Resist\u00eancia \u00e0 vibra\u00e7\u00e3o<\/strong>:<\/li>\n\n\n\n<li>Oriente os rel\u00e9s de modo que <strong>as for\u00e7as de vibra\u00e7\u00e3o\/choque s\u00e3o perpendiculares ao movimento da armadura<\/strong> (reduz o acionamento falso).<\/li>\n\n\n\n<li>Para ambientes de alta vibra\u00e7\u00e3o (por exemplo, automotivo), use rel\u00e9s com adesivo de absor\u00e7\u00e3o de choque ou molas refor\u00e7adas.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Cleaning_and_Protection\"><\/span><strong>5.Limpeza e prote\u00e7\u00e3o<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Limpeza p\u00f3s-soldagem<\/strong>:<\/li>\n\n\n\n<li>Use pasta de solda sem limpeza ou \u00e1lcool isoprop\u00edlico para remover res\u00edduos de fluxo, evitando a corros\u00e3o por contato.<\/li>\n\n\n\n<li><strong>Revestimento conformal<\/strong>:<\/li>\n\n\n\n<li>Aplique um revestimento protetor (por exemplo, poliuretano) em ambientes \u00famidos\/contaminados para cobrir os pinos do rel\u00e9 e os tra\u00e7os da PCB.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Design_Pitfalls_and_Common_Mistakes\"><\/span><strong>Armadilhas de design e erros comuns<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Erro 1<\/strong>: Running high-voltage contacts parallel to signal traces \u2192 causes crosstalk.<br><strong>Solu\u00e7\u00e3o<\/strong>: Use roteamento ortogonal ou adicione slots de isolamento.<\/li>\n\n\n\n<li><strong>Erro 2<\/strong>: Insufficient coil drive current \u2192 incomplete contact engagement.<br><strong>Solu\u00e7\u00e3o<\/strong>: Verifique se o circuito de acionamento fornece tens\u00e3o\/corrente nominal (por exemplo, 5V\/20mA).<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Relay_Selection_Reference_Table\"><\/span><strong>Tabela de refer\u00eancia de sele\u00e7\u00e3o de rel\u00e9<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th><strong>Par\u00e2metro<\/strong><\/th><th><strong>Valor\/m\u00e9todo recomendado<\/strong><\/th><th><strong>Notas<\/strong><\/th><\/tr><\/thead><tbody><tr><td>Espessura da placa de circuito impresso<\/td><td>1,6 mm (furo passante)<\/td><td>Aumento para 2,0 mm para alta vibra\u00e7\u00e3o<\/td><\/tr><tr><td>Espessura do cobre<\/td><td>\u226570\u03bcm for contacts, 35\u03bcm for coil<\/td><td>Engrossar caminhos de alta corrente<\/td><\/tr><tr><td>Espa\u00e7amento entre bobina e contato<\/td><td>\u22655mm (low voltage) or per rating<\/td><td>\u22652.5mm for 250V AC<\/td><\/tr><tr><td>Temperatura de solda<\/td><td>\u2264260\u00b0C (SMT)<\/td><td>Verifique a folha de dados do rel\u00e9<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"402\" src=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/PCB-Relay-2-1.jpg\" alt=\"Rel\u00e9 de PCB\" class=\"wp-image-6719\" srcset=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/PCB-Relay-2-1.jpg 600w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/PCB-Relay-2-1-300x201.jpg 300w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/PCB-Relay-2-1-150x101.jpg 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"PCB_Relay_Mounting_Techniques\"><\/span><strong>T\u00e9cnicas de montagem de rel\u00e9s em PCB<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"I_Soldering_Process_Specifications\"><\/span><strong>I. Especifica\u00e7\u00f5es do processo de soldagem<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>M\u00e9todos de solda<\/strong><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Solda manual<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Use um 30- 6<strong>Ferro de solda de 0W<\/strong> com uma ponta limpa.<\/li>\n\n\n\n<li>Mantenha a temperatura da ponta em <strong>350\u00b0C max<\/strong> para evitar danos t\u00e9rmicos.<\/li>\n\n\n\n<li>Soldar cada pino para <strong>\u22643 seconds<\/strong> para evitar superaquecimento.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Solda automatizada<\/strong>:\n<ul class=\"wp-block-list\">\n<li><strong>Solda por onda<\/strong>:<\/li>\n\n\n\n<li>Ajuste a altura da onda de solda para evitar o transbordamento para a placa de circuito impresso.<\/li>\n\n\n\n<li>Perfil padr\u00e3o: <strong>260\u00b0C (\u00b15\u00b0C) for 6 seconds<\/strong>.<\/li>\n\n\n\n<li><strong>Solda por refluxo (SMT)<\/strong>:<\/li>\n\n\n\n<li>Siga as curvas de temperatura espec\u00edficas do rel\u00e9 (normalmente o pico <strong>\u2264260\u00b0C<\/strong>).<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Notas cr\u00edticas<\/strong><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>PCBs multicamadas<\/strong>: Uma massa t\u00e9rmica maior pode exigir um pr\u00e9-aquecimento prolongado para garantir a forma\u00e7\u00e3o adequada da junta de solda.<\/li>\n\n\n\n<li><strong>Aplica\u00e7\u00e3o do Flux<\/strong>: Use fluxo sem limpeza para minimizar os res\u00edduos p\u00f3s-soldagem.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"II_Installation_Electrical_Connection\"><\/span><strong>II.Instala\u00e7\u00e3o e grampo; conex\u00e3o el\u00e9trica<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Tipos de montagem<\/strong><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Furo passante (THT)<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Os pinos s\u00e3o inseridos em orif\u00edcios perfurados e soldados no lado oposto.<\/li>\n\n\n\n<li>Proporciona forte ader\u00eancia mec\u00e2nica para ambientes de alta vibra\u00e7\u00e3o.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Montagem em superf\u00edcie (SMT)<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Soldado por refluxo diretamente nos pads; ideal para projetos compactos.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Diretrizes de fia\u00e7\u00e3o<\/strong><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Terminais da bobina<\/strong>: Conecte-se aos sinais de controle (por exemplo, GPIO da MCU) com resistores limitadores de corrente, se necess\u00e1rio.<\/li>\n\n\n\n<li><strong>Terminais de contato<\/strong>:\n<ul class=\"wp-block-list\">\n<li><strong>NO\/NC\/COM<\/strong> pinos conectados em s\u00e9rie com circuitos de carga (motores, l\u00e2mpadas).<\/li>\n\n\n\n<li>Certifique-se de que a largura do tra\u00e7o suporte a corrente de carga (por exemplo, <strong>70\u03bcm Cu for 5A+<\/strong>).<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Requisitos de isolamento<\/strong><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Manter <strong>\u22652.5mm creepage distance<\/strong> entre a bobina e os contatos de alta tens\u00e3o (250V CA).<\/li>\n\n\n\n<li>Verificar a rigidez diel\u00e9trica (<strong>Isolamento de 1kV+<\/strong>) entre os circuitos de controle e de carga.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"III_Post-Installation_Steps\"><\/span><strong>III.Etapas p\u00f3s-instala\u00e7\u00e3o<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Arrefecimento e l\u00e2mpada de resfriamento; Limpeza<\/strong><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Deixe a PCB esfriar naturalmente; evite o resfriamento for\u00e7ado para evitar estresse t\u00e9rmico.<\/li>\n\n\n\n<li>Limpe os res\u00edduos de fluxo com \u00e1lcool isoprop\u00edlico (IPA) se for usado um fluxo que n\u00e3o seja de limpeza.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Inspe\u00e7\u00e3o e teste<\/strong><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Verifica\u00e7\u00e3o visual<\/strong>: Verifique se as juntas de solda est\u00e3o brilhantes, c\u00f4ncavas e livres de pontes\/rachaduras.<\/li>\n\n\n\n<li><strong>Teste de continuidade<\/strong>Use um mult\u00edmetro para confirmar:\n<ul class=\"wp-block-list\">\n<li>A resist\u00eancia da bobina corresponde aos valores da folha de dados.<\/li>\n\n\n\n<li>A continuidade do contato (estados NO\/NC) comuta corretamente quando energizada.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"IV_Common_Pitfalls_Solutions\"><\/span><strong>IV.Armadilhas e solu\u00e7\u00f5es comuns<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th><strong>Problema<\/strong><\/th><th><strong>Causa<\/strong><\/th><th><strong>Solu\u00e7\u00e3o<\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong>Ponte de solda<\/strong><\/td><td>Excesso de solda ou desalinhamento<\/td><td>Ajuste da espessura do est\u00eancil\/perfil de refluxo<\/td><\/tr><tr><td><strong>Rel\u00e9 superaquecido<\/strong><\/td><td>Tempo de solda prolongado<\/td><td>Strictly limit soldering to \u22643s per pin<\/td><\/tr><tr><td><strong>Contato intermitente<\/strong><\/td><td>Junta de solda ruim ou contamina\u00e7\u00e3o<\/td><td>Refluxo\/retrabalho com fluxo novo<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"402\" src=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/PCB-Relay-3.jpg\" alt=\"\" class=\"wp-image-6720\" srcset=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/PCB-Relay-3.jpg 600w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/PCB-Relay-3-300x201.jpg 300w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/PCB-Relay-3-150x101.jpg 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Testing_PCB_Relays\"><\/span>Teste de rel\u00e9s de PCB<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Quando um rel\u00e9 n\u00e3o est\u00e1 energizado, NO e NC permanecem abertos e fechados, respectivamente. \u00c9 necess\u00e1rio um mult\u00edmetro para testar o rel\u00e9. Depois disso, voc\u00ea pode consultar as etapas a seguir para testar o rel\u00e9 da PCB:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Voc\u00ea precisa configurar o mult\u00edmetro para o modo de verifica\u00e7\u00e3o de continuidade.<\/li>\n\n\n\n<li>\u00c9 necess\u00e1rio testar a continuidade entre os contatos NF e os polos.<\/li>\n\n\n\n<li>\u00c9 necess\u00e1rio verificar a descontinuidade entre os contatos normalmente abertos e os polos.<\/li>\n\n\n\n<li>Em seguida, energize o rel\u00e9 para energizar a bobina. Isso produzir\u00e1 um som de clique. Isso ocorre porque os contatos est\u00e3o agora mudando da posi\u00e7\u00e3o Normalmente Fechado (NC) para a posi\u00e7\u00e3o Normalmente Aberto (NO) em resposta ao campo magn\u00e9tico.<\/li>\n\n\n\n<li>Ser\u00e1 necess\u00e1rio verificar a continuidade entre os contatos normalmente abertos e os polos.<\/li>\n\n\n\n<li>Teste a descontinuidade entre o contato NF e o polo.<\/li>\n\n\n\n<li>Por fim, me\u00e7a a resist\u00eancia da bobina com um mult\u00edmetro. Verifique se ela corresponde \u00e0 resist\u00eancia indicada no rel\u00e9 do fabricante.<\/li>\n<\/ol>\n\n\n\n<p>Os rel\u00e9s de PCB podem ser usados como um sistema de prote\u00e7\u00e3o para um sistema de circuito inteiro.Embora sejam pequenos em tamanho, eles s\u00e3o eficazes na prote\u00e7\u00e3o de todo o sistema contra danos e operam com o mesmo princ\u00edpio dos rel\u00e9s de tamanho padr\u00e3o.<\/p>\n\n\n\n<p>Se voc\u00ea precisar de ajuda?Entre em contato conosco em <a href=\"mailto:op@topfastpcb.com\">op@topfastpcb.com<\/a><br>Precisa de uma cota\u00e7\u00e3o de PCB ou PCBA? <a href=\"https:\/\/topfastpcba.com\/pt\/contact\/\">Obtenha uma cota\u00e7\u00e3o agora<\/a>!<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Related_reading\"><\/span><strong>Leitura relacionada<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>1.<a href=\"https:\/\/topfastpcba.com\/pt\/songle-spdt-miniature-pcb-mount-relay\/\">Rel\u00e9 de montagem em placa de circuito impresso miniatura Songle Spdt<\/a><br>2.<a href=\"https:\/\/topfastpcba.com\/pt\/12v-spdt-super-miniature-pcb-mount-relay\/\">Rel\u00e9 de montagem em PCB superminiatura de 12v Spdt<\/a><br>3.<a href=\"https:\/\/topfastpcba.com\/pt\/songle-spdt-5-pin-miniature-pcb-mount-relay\/\">Rel\u00e9 de montagem em placa de circuito impresso miniatura de 5 pinos Songle Spdt<\/a><br>4.<a href=\"https:\/\/topfastpcba.com\/pt\/5-pin-relay\/\">Rel\u00e9 de 5 pinos<\/a><br>5.<a href=\"https:\/\/topfastpcba.com\/pt\/30-amp-relay\/\">Rel\u00e9 de 30 amp\u00e8res<\/a><br>6.<a href=\"https:\/\/topfastpcba.com\/pt\/voltage-sensing-relay\/\">Rel\u00e9 de detec\u00e7\u00e3o de tens\u00e3o<\/a><\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Aprenda tudo sobre rel\u00e9s de PCB - como eles funcionam, tipos (SPST, SPDT, DPST, DPDT), t\u00e9cnicas de montagem e pr\u00e1ticas recomendadas de projeto.<\/p>","protected":false},"author":2,"featured_media":6716,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[52],"class_list":["post-6715","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-pcb"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is PCB Relay\uff1f - Topfastpcba<\/title>\n<meta name=\"description\" content=\"Learn everything about PCB relays - how they work, types (SPST, SPDT, DPST, DPDT), mounting techniques, and design best practices.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-pcb-relay\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is PCB Relay\uff1f - 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