{"id":6624,"date":"2025-12-08T08:28:59","date_gmt":"2025-12-08T07:28:59","guid":{"rendered":"https:\/\/yfconnectivity.com\/?p=6624"},"modified":"2025-12-08T08:29:03","modified_gmt":"2025-12-08T07:29:03","slug":"o-que-e-pc-em-fibra-optica","status":"publish","type":"post","link":"https:\/\/yfconnectivity.com\/pt-br\/what-is-pc-in-fiber-optic\/","title":{"rendered":"O que \u00e9 PC em fibra \u00f3ptica - e por que voc\u00ea raramente v\u00ea \u201cPC\u201d"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"6624\" class=\"elementor elementor-6624\" data-elementor-post-type=\"post\">\n\t\t\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-9241746 e-flex e-con-boxed e-con e-parent\" data-id=\"9241746\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-23b7239 elementor-widget elementor-widget-text-editor\" data-id=\"23b7239\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"321\" data-end=\"686\">If you read older fiber-optic documents, you will often see the term <strong data-start=\"390\" data-end=\"415\">PC (Physical Contact)<\/strong> used as a connector end-face type. But when you look at today\u2019s products, catalogs, or even online stores, \u201cPC\u201d almost never appears as a standalone label. Instead, most connectors are marked <a href=\"https:\/\/yfconnectivity.com\/fiber-term-explanation-upc\/\"><strong data-start=\"608\" data-end=\"615\">UPC<\/strong><\/a> or <a href=\"https:\/\/yfconnectivity.com\/fiber-term-explanation-apc\/\"><strong data-start=\"619\" data-end=\"626\">APC<\/strong><\/a>, with blue and green colors becoming the industry standard.<\/p><p data-start=\"688\" data-end=\"944\">So what exactly is PC? Why did it disappear from modern labeling? And how does it relate to UPC and APC?<br \/><span style=\"font-style: inherit; font-weight: inherit;\">As a fiber-optic manufacturer, we will explain PC from a practical, production-based perspective \u2014 and clarify why PC was eventually replaced by UPC.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-afce344 elementor-widget elementor-widget-image\" data-id=\"afce344\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/yfconnectivity.com\/wp-content\/uploads\/2025\/12\/fiber-optic-sc-connector-apc-and-upc-1024x768.webp\" class=\"attachment-large size-large wp-image-6628\" alt=\"fiber optic sc connector acpc and upc\" srcset=\"https:\/\/yfconnectivity.com\/wp-content\/uploads\/2025\/12\/fiber-optic-sc-connector-apc-and-upc-1024x768.webp 1024w, https:\/\/yfconnectivity.com\/wp-content\/uploads\/2025\/12\/fiber-optic-sc-connector-apc-and-upc-300x225.webp 300w, https:\/\/yfconnectivity.com\/wp-content\/uploads\/2025\/12\/fiber-optic-sc-connector-apc-and-upc-768x576.webp 768w, https:\/\/yfconnectivity.com\/wp-content\/uploads\/2025\/12\/fiber-optic-sc-connector-apc-and-upc-16x12.webp 16w, https:\/\/yfconnectivity.com\/wp-content\/uploads\/2025\/12\/fiber-optic-sc-connector-apc-and-upc-600x450.webp 600w, https:\/\/yfconnectivity.com\/wp-content\/uploads\/2025\/12\/fiber-optic-sc-connector-apc-and-upc.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\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<div class=\"elementor-element elementor-element-eda93d4 elementor-toc--content-ellipsis elementor-widget__width-initial elementor-hidden-desktop elementor-hidden-tablet elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"eda93d4\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;no_headings_message&quot;:&quot;No headings were found on this page.&quot;,&quot;container&quot;:&quot;.main-content&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:0,&quot;sizes&quot;:[]},&quot;headings_by_tags&quot;:[&quot;h2&quot;,&quot;h3&quot;,&quot;h4&quot;,&quot;h5&quot;,&quot;h6&quot;],&quot;marker_view&quot;:&quot;numbers&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<h4 class=\"elementor-toc__header-title\">\n\t\t\t\tTABLE OF CONTENTS\t\t\t<\/h4>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__eda93d4\" aria-expanded=\"true\" aria-label=\"Ouvrir la table des mati\u00e8res\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__eda93d4\" aria-expanded=\"true\" aria-label=\"Fermer la table des mati\u00e8res\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__eda93d4\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<svg class=\"elementor-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\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 class=\"elementor-element elementor-element-5b8727a elementor-widget elementor-widget-heading\" data-id=\"5b8727a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What PC Originally Meant<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-47d61a4 elementor-widget elementor-widget-text-editor\" data-id=\"47d61a4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"987\" data-end=\"1232\">PC stands for <strong data-start=\"1001\" data-end=\"1021\">Physical Contact<\/strong>. This polishing style was created to solve the biggest problem of the early flat-polished (Flat\/FP) connectors: <strong data-start=\"1134\" data-end=\"1203\">high insertion loss and unstable performance caused by an air gap<\/strong> between the two fiber cores.<\/p><p data-start=\"1234\" data-end=\"1433\">With PC polishing, the ferrule end face is slightly curved so that the two fibers physically touch each other when connected. This greatly reduces the air gap and improves insertion loss performance.<\/p><p data-start=\"1435\" data-end=\"1609\">In the 1990s and early 2000s, PC was the <strong data-start=\"1476\" data-end=\"1503\">dominant polishing type<\/strong> for almost all single-mode connectors. It marked a major step forward in fiber-optic connector evolution.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0455ee3 elementor-widget elementor-widget-heading\" data-id=\"0455ee3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">PC vs UPC: What Changed?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6568753 elementor-widget elementor-widget-text-editor\" data-id=\"6568753\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"1652\" data-end=\"1977\">As fiber networks demanded lower loss and higher return loss, the basic PC structure was further optimized. Manufacturing equipment improved, polishing films became more precise, and stricter inspection standards were adopted. These upgrades resulted in a more refined version of PC \u2014 called <strong data-start=\"1944\" data-end=\"1976\">UPC (Ultra Physical Contact)<\/strong>.<\/p><p data-start=\"1979\" data-end=\"2048\">UPC still uses the same general dome-shaped geometry as PC, but with:<\/p><ul><li data-start=\"2052\" data-end=\"2079\">A smoother surface finish<\/li><li data-start=\"2052\" data-end=\"2079\">Tighter radius control<\/li><li data-start=\"2052\" data-end=\"2079\">More precise polishing steps<\/li><\/ul><p data-start=\"2141\" data-end=\"2223\">This gives UPC better optical performance, especially in terms of <strong data-start=\"2207\" data-end=\"2222\">return loss<\/strong>.<\/p><ul><li data-start=\"2259\" data-end=\"2292\"><strong data-start=\"2259\" data-end=\"2266\">PC:<\/strong> Around \u201330 dB to \u201340 dB<\/li><li data-start=\"2259\" data-end=\"2292\"><strong data-start=\"2295\" data-end=\"2303\">UPC:<\/strong> Around \u201350 dB to \u201355 dB<\/li><\/ul><p data-start=\"2331\" data-end=\"2512\">Because UPC is essentially a <strong data-start=\"2360\" data-end=\"2392\">higher-grade evolution of PC<\/strong>, most factories stopped marking \u201cPC\u201d on products. Instead, UPC became the new standard for blue single-mode connectors.<\/p><p data-start=\"2514\" data-end=\"2582\">This is why most of the industry visually associates <strong data-start=\"2567\" data-end=\"2581\">blue = UPC<\/strong>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dd7a842 elementor-widget elementor-widget-heading\" data-id=\"dd7a842\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Why PC Is Rarely Seen Today<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1d03b5f elementor-widget elementor-widget-text-editor\" data-id=\"1d03b5f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"2237\" data-end=\"2376\">Although PC technically still exists as a concept, it is no longer used as a market label. Here are the main reasons:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fb4eae4 elementor-widget elementor-widget-heading\" data-id=\"fb4eae4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">a. The industry decided on standardized color coding<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d277c6c elementor-widget elementor-widget-text-editor\" data-id=\"d277c6c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"2808\" data-end=\"2933\">Modern fiber networks require clear, unmistakable identification.<br data-start=\"2873\" data-end=\"2876\" \/>Color codes help installers work faster and avoid errors:<\/p><ul><li data-start=\"2937\" data-end=\"2953\"><strong data-start=\"2937\" data-end=\"2951\">Blue = UPC<\/strong><\/li><li data-start=\"2937\" data-end=\"2953\"><strong data-start=\"2956\" data-end=\"2997\">Green = APC (Angled Physical Contact)<\/strong><\/li><li data-start=\"2937\" data-end=\"2953\"><strong data-start=\"3002\" data-end=\"3047\">Beige \/ Aqua, etc. = Multimode variations<\/strong><\/li><\/ul><p data-start=\"3049\" data-end=\"3169\">There was <strong data-start=\"3059\" data-end=\"3081\">no dedicated color<\/strong> for PC, which made it impractical for large-scale manufacturing and field installation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a9d5204 elementor-widget elementor-widget-heading\" data-id=\"a9d5204\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">b. UPC performance is better and cost-effective<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6f3f657 elementor-widget elementor-widget-text-editor\" data-id=\"6f3f657\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"3227\" data-end=\"3250\">UPC polishing provides:<\/p><ul><li data-start=\"3254\" data-end=\"3274\">Higher return loss<\/li><li data-start=\"3254\" data-end=\"3274\">More stable mass-production consistency<\/li><li data-start=\"3254\" data-end=\"3274\">Better surface quality under interferometer inspection<\/li><\/ul><p data-start=\"3379\" data-end=\"3485\">And the cost difference today is minimal. So manufacturers naturally favored the better-performing option.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-050642b elementor-widget elementor-widget-heading\" data-id=\"050642b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">c. Customers and distributors expect UPC as the default<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1df3f1d elementor-widget elementor-widget-text-editor\" data-id=\"1df3f1d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"3551\" data-end=\"3635\">As market awareness grew, \u201cPC\u201d disappeared not because it was unusable, but because:<\/p><ul><li data-start=\"3639\" data-end=\"3674\">Distributors order UPC by default<\/li><li data-start=\"3639\" data-end=\"3674\">Installers expect UPC in all blue connectors<\/li><li data-start=\"3639\" data-end=\"3674\">Data sheets, OEM catalogs, and standards reference UPC<\/li><\/ul><p data-start=\"3784\" data-end=\"3890\">Essentially, PC was replaced due to <strong data-start=\"3820\" data-end=\"3861\">market alignment and user expectation<\/strong>, not just technical factors.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-36096d3 elementor-widget elementor-widget-heading\" data-id=\"36096d3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">So Is PC Still Used Internally?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-67d409c elementor-widget elementor-widget-text-editor\" data-id=\"67d409c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"3940\" data-end=\"4007\">Yes \u2014 but mostly as a <strong data-start=\"3962\" data-end=\"3985\">classification term<\/strong>, not a product label.<\/p><p data-start=\"4009\" data-end=\"4192\">Factories still use \u201cPC geometry\u201d to describe the general dome-shaped polishing category (compared to APC\u2019s 8\u00b0 angle).<br data-start=\"4127\" data-end=\"4130\" \/>Inside production documents, you will still see references to:<\/p><ul><li data-start=\"4196\" data-end=\"4216\">PC geometry radius<\/li><li data-start=\"4196\" data-end=\"4216\">PC polishing steps<\/li><li data-start=\"4196\" data-end=\"4216\">PC interferometer parameters<\/li><\/ul><p data-start=\"4274\" data-end=\"4357\">But the <strong data-start=\"4282\" data-end=\"4299\">final product<\/strong> is almost always labeled \u201cUPC\u201d when it exits the factory.<\/p><p data-start=\"4359\" data-end=\"4451\">So PC is still part of the manufacturing language, but not part of modern sales terminology.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-58c6085 elementor-widget elementor-widget-heading\" data-id=\"58c6085\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Understanding the Relationship: PC, UPC, and APC<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4e9d060 elementor-widget elementor-widget-text-editor\" data-id=\"4e9d060\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"4518\" data-end=\"4571\">Here is the simplest way to understand the evolution:<\/p><ol><li data-start=\"4576\" data-end=\"4625\"><strong data-start=\"4576\" data-end=\"4582\">PC<\/strong> \u2013 the original physical-contact end face<\/li><li data-start=\"4576\" data-end=\"4625\"><strong data-start=\"4629\" data-end=\"4636\">UPC<\/strong> \u2013 an upgraded, more precise version of PC<\/li><li data-start=\"4576\" data-end=\"4625\"><strong data-start=\"4684\" data-end=\"4691\">APC<\/strong> \u2013 an angled version of PC (8\u00b0 polish), giving the best return loss<\/li><\/ol><p data-start=\"4760\" data-end=\"4919\">All three share the same basic structure and polishing principle \u2014 physical contact \u2014 but UPC\/APC are modern, improved forms that replaced early PC connectors.<\/p><p data-start=\"4921\" data-end=\"5064\">So when you see \u201cUPC\u201d or \u201cAPC,\u201d they are not completely different inventions; they are <strong data-start=\"5008\" data-end=\"5063\">refinements built on top of the original PC concept<\/strong>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-496f931 elementor-widget elementor-widget-heading\" data-id=\"496f931\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Why Many People Still Mention PC Today<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6bdc594 elementor-widget elementor-widget-text-editor\" data-id=\"6bdc594\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"5121\" data-end=\"5196\">Many older books, tutorials, and certifications still reference PC because:<\/p><ul><li data-start=\"5200\" data-end=\"5232\">It is historically significant<\/li><li data-start=\"5200\" data-end=\"5232\">It helps explain the evolution of connector polishing<\/li><li data-start=\"5200\" data-end=\"5232\">Many beginners see \u201cUPC\/APC\u201d and wonder what the \u201cP\u201d stands for<\/li><\/ul><p data-start=\"5360\" data-end=\"5490\">In reality, the term PC is still useful for teaching, but modern networks almost never purchase connectors labeled simply as \u201cPC.\u201d<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c9bbcb8 elementor-widget elementor-widget-heading\" data-id=\"c9bbcb8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Conclusion: PC Still Matters, But UPC Took Its Place<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3841996 elementor-widget elementor-widget-text-editor\" data-id=\"3841996\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"5561\" data-end=\"5824\">PC is the foundation of modern fiber-optic connector polishing. Without it, UPC and APC would not exist. But as technology improved, UPC replaced PC as the standard \u201cstraight-polish\u201d connector type used in today\u2019s FTTH networks, data centers, and telecom systems.<\/p><p data-start=\"5826\" data-end=\"5976\">This is why you rarely see \u201cPC\u201d in catalogs \u2014 the entire market, from factories to installers, shifted to UPC for performance, stability, and clarity.<\/p><p data-start=\"5978\" data-end=\"6134\">If you want a deeper comparison between UPC and APC, you can check our detailed article here:<br data-start=\"6071\" data-end=\"6074\" \/><strong data-start=\"6074\" data-end=\"6134\"><em data-start=\"6076\" data-end=\"6132\">\u201c<a href=\"https:\/\/yfconnectivity.com\/fiber-optic-apc-vs-upc\/\">Fiber Optic APC vs UPC \u2013 What\u2019s the Real Difference?<\/a>\u201d<\/em><\/strong><\/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\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>PC (Physical Contact) \u00e9 um dos primeiros estilos de polimento de fibra \u00f3ptica, mas atualmente raramente aparece como r\u00f3tulo de produto. Em vez disso, os conectores modernos s\u00e3o quase sempre marcados como UPC ou APC. Este artigo explica o significado original de PC, como ele se relaciona com UPC e APC e por que o PC foi gradualmente substitu\u00eddo no mercado, embora ainda exista nos processos de polimento das f\u00e1bricas.<\/p>","protected":false},"author":1,"featured_media":6629,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[66],"tags":[],"class_list":["post-6624","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fiber-optic-glossary"],"acf":[],"_links":{"self":[{"href":"https:\/\/yfconnectivity.com\/pt-br\/wp-json\/wp\/v2\/posts\/6624","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yfconnectivity.com\/pt-br\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yfconnectivity.com\/pt-br\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yfconnectivity.com\/pt-br\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yfconnectivity.com\/pt-br\/wp-json\/wp\/v2\/comments?post=6624"}],"version-history":[{"count":7,"href":"https:\/\/yfconnectivity.com\/pt-br\/wp-json\/wp\/v2\/posts\/6624\/revisions"}],"predecessor-version":[{"id":6633,"href":"https:\/\/yfconnectivity.com\/pt-br\/wp-json\/wp\/v2\/posts\/6624\/revisions\/6633"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/yfconnectivity.com\/pt-br\/wp-json\/wp\/v2\/media\/6629"}],"wp:attachment":[{"href":"https:\/\/yfconnectivity.com\/pt-br\/wp-json\/wp\/v2\/media?parent=6624"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yfconnectivity.com\/pt-br\/wp-json\/wp\/v2\/categories?post=6624"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yfconnectivity.com\/pt-br\/wp-json\/wp\/v2\/tags?post=6624"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}