{"id":7995,"date":"2024-01-02T08:24:44","date_gmt":"2024-01-02T08:24:44","guid":{"rendered":"https:\/\/www.besterpcba.com\/?p=7995"},"modified":"2024-01-02T08:24:45","modified_gmt":"2024-01-02T08:24:45","slug":"what-is-minimum-annular-ring-mar","status":"publish","type":"post","link":"https:\/\/www.besterpcba.com\/pt\/o-que-e-o-anel-anular-minimo-mar\/","title":{"rendered":"O que \u00e9 o anel anular m\u00ednimo (MAR)"},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"what-is-minimum-annular-ring-mar\">O que \u00e9 o anel anular m\u00ednimo (MAR)<\/h2>\n\n\n<p>O anel anular m\u00ednimo (MAR) refere-se \u00e0 largura ou dimens\u00e3o m\u00ednima da almofada de cobre que rodeia um orif\u00edcio perfurado numa placa de circuito impresso. Este anel anular \u00e9 crucial para estabelecer liga\u00e7\u00f5es el\u00e9ctricas entre o orif\u00edcio perfurado e os componentes ou tra\u00e7os na placa de circuito impresso.<\/p>\n\n\n\n<p>A dimens\u00e3o do anel anular m\u00ednimo \u00e9 determinada pelas normas de conce\u00e7\u00e3o da ind\u00fastria e pode variar consoante se trate da camada interior ou exterior da placa de circuito impresso. A largura m\u00ednima \u00e9 normalmente fixada em 0,1 mm para os an\u00e9is anulares na camada interior. Por outro lado, para os an\u00e9is anulares na camada exterior, a largura m\u00ednima \u00e9 normalmente especificada como 0,05 mm.<\/p>\n\n\n\n<p>A dimens\u00e3o m\u00ednima do anel anular \u00e9 um par\u00e2metro cr\u00edtico na conce\u00e7\u00e3o e fabrico de placas de circuito impresso. Assegura a fiabilidade e a funcionalidade da placa de circuito impresso, proporcionando uma liga\u00e7\u00e3o s\u00f3lida entre o orif\u00edcio perfurado e a almofada de cobre circundante. Normalmente, os fabricantes fornecem diretrizes e especifica\u00e7\u00f5es relativas \u00e0 dimens\u00e3o m\u00ednima do anel anular para garantir a funcionalidade adequada e a ades\u00e3o \u00e0s normas da ind\u00fastria.<\/p>\n\n\n\n<div class=\"wp-block-group glossary_faqs\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h2 class=\"wp-block-heading\" id=\"frequently-asked-questions\">Perguntas mais frequentes<\/h2>\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"what-is-the-minimum-annular-ring-on-a-pcb\">Qual \u00e9 o anel anular m\u00ednimo numa placa de circuito impresso<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>Para a camada interior de uma placa de circuito impresso, a largura m\u00ednima do anel anular \u00e9 de 0,1 mm. Por outro lado, para a camada exterior de uma placa de circuito impresso, a largura m\u00ednima do anel anular \u00e9 de 0,05 mm.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"why-is-it-called-annular\">Porque \u00e9 que se chama anular<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>O termo \"anular\" deriva da palavra latina para anel, \"annulus\". Este nome \u00e9 dado a estes eclipses devido ao seu carater\u00edstico anel de fogo, que \u00e9 vis\u00edvel mesmo que dure apenas um breve momento. Se este anel de fogo puder ser visto de pelo menos um local, o eclipse \u00e9 referido como um eclipse solar anular.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"what-is-annular-ring-test-used-to-determine\">O que \u00e9 o teste do anel anular usado para determinar<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>Estes c\u00edrculos conc\u00eantricos, conhecidos como an\u00e9is anulares, podem ser utilizados para estimar a idade de uma \u00e1rvore atrav\u00e9s da sua contagem.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"what-is-the-difference-between-class-2-and-class-3-annular-rings\">Qual \u00e9 a diferen\u00e7a entre an\u00e9is anulares de classe 2 e classe 3?<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>Os an\u00e9is anulares de classe 2 permitem a presen\u00e7a de um vazio em 5% dos furos, enquanto os an\u00e9is anulares de classe 3 n\u00e3o permitem quaisquer vazios. Al\u00e9m disso, o requisito de espessura de revestimento para a Classe 2 \u00e9 de 0,8 mil, enquanto \u00e9 de 1 mil para a Classe 3. Estes s\u00e3o alguns dos requisitos vari\u00e1veis entre os an\u00e9is anulares da Classe 2 e da Classe 3.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"what-is-the-minimum-width-of-annular-plate\">Qual \u00e9 a largura m\u00ednima da placa anular<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>As chapas de fundo anulares devem ter uma largura radial de, pelo menos, 600 mm (24 pol.).<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"what-is-another-name-for-annual-rings\">Qual \u00e9 outro nome para an\u00e9is anuais<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>Por conseguinte, o termo adequado seria \"anel de crescimento\".<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>O que \u00e9 o anel anular m\u00ednimo (MAR)<\/p>\n<p>O anel anular m\u00ednimo (MAR) refere-se \u00e0 largura ou dimens\u00e3o m\u00ednima da almofada de cobre que rodeia um orif\u00edcio perfurado numa placa de circuito impresso.<\/p>","protected":false},"author":1,"featured_media":4750,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"article_term":"","article_term_alternate":"","article_term_def":"","article_hook":"","auto_links":"","article_topic":"","article_fact_check":"","mt_social_share":"","mt_content_meta":"","mt_glossary_display":"","glossary_heading":"","glossary":"Minimum Annular Ring (MAR)","glossary_alter":"","glossary_def":"","article_task":"","footnotes":""},"categories":[15],"tags":[13,14],"class_list":["post-7995","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-glossary","tag-ng"],"_links":{"self":[{"href":"https:\/\/www.besterpcba.com\/pt\/wp-json\/wp\/v2\/posts\/7995","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.besterpcba.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.besterpcba.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.besterpcba.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.besterpcba.com\/pt\/wp-json\/wp\/v2\/comments?post=7995"}],"version-history":[{"count":1,"href":"https:\/\/www.besterpcba.com\/pt\/wp-json\/wp\/v2\/posts\/7995\/revisions"}],"predecessor-version":[{"id":9372,"href":"https:\/\/www.besterpcba.com\/pt\/wp-json\/wp\/v2\/posts\/7995\/revisions\/9372"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.besterpcba.com\/pt\/wp-json\/wp\/v2\/media\/4750"}],"wp:attachment":[{"href":"https:\/\/www.besterpcba.com\/pt\/wp-json\/wp\/v2\/media?parent=7995"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.besterpcba.com\/pt\/wp-json\/wp\/v2\/categories?post=7995"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.besterpcba.com\/pt\/wp-json\/wp\/v2\/tags?post=7995"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}