{"id":1109,"date":"2017-12-18T09:08:46","date_gmt":"2017-12-18T09:08:46","guid":{"rendered":"https:\/\/www.prophotonix.com\/?p=1109"},"modified":"2025-07-29T16:07:17","modified_gmt":"2025-07-29T15:07:17","slug":"advantages-of-chip-on-board-led-vs-surface-mount-led-2","status":"publish","type":"post","link":"https:\/\/www.prophotonix.com\/advantages-of-chip-on-board-led-vs-surface-mount-led-2\/","title":{"rendered":"Advantages of Chip-on-Board LED vs. Surface Mount LED"},"content":{"rendered":"<h2>What is Chip-on-Board LED Technology?<\/h2>\n<p><a href=\"https:\/\/www.prophotonix.com\/technical-overview\/chip-on-board-led\/\"><strong data-redactor-tag=\"strong\"><u data-redactor-tag=\"u\">Chip-on-Board LED technology<\/u><\/strong><\/a>\u00a0describes the mounting of a bare LED chip in direct contact with the substrate to produce\u00a0<strong data-redactor-tag=\"strong\"><a href=\"https:\/\/www.prophotonix.com\/resources\/technical-overviews\/led-array-methods\/\">LED arrays<\/a>.<\/strong>\u00a0It is a method of LED packaging which has a number of advantages over conventional technologies such as \u201cT-pack\u201d and Surface Mount LEDs.<\/p>\n<h2>What are Packaged LEDs?<\/h2>\n<p>An example of a packaged T-pack LED is shown below. A packaged LED has an optical lens, bonding wire, electrodes, and resin to encapsulate the LED for protection. Surface Mount Devices offer higher packing density over T-pack though still significantly less density than Chip-on-Board.<\/p>\n<p>&nbsp;<\/p>\n<figure id=\"attachment_1111\" aria-describedby=\"caption-attachment-1111\" style=\"width: 300px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"wp-image-1111 size-medium\" src=\"https:\/\/www.prophotonix.com\/wp-content\/uploads\/2017\/12\/Surface_Mount_LED_Drawing-300x152.jpg\" alt=\"chip on board technology\" width=\"300\" height=\"152\" srcset=\"https:\/\/www.prophotonix.com\/wp-content\/uploads\/2017\/12\/Surface_Mount_LED_Drawing-300x152.jpg 300w, https:\/\/www.prophotonix.com\/wp-content\/uploads\/2017\/12\/Surface_Mount_LED_Drawing-768x389.jpg 768w, https:\/\/www.prophotonix.com\/wp-content\/uploads\/2017\/12\/Surface_Mount_LED_Drawing.jpg 1024w, https:\/\/www.prophotonix.com\/wp-content\/uploads\/2017\/12\/Surface_Mount_LED_Drawing-250x126.jpg 250w, https:\/\/www.prophotonix.com\/wp-content\/uploads\/2017\/12\/Surface_Mount_LED_Drawing-158x80.jpg 158w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-1111\" class=\"wp-caption-text\">T-Pack LED<\/figcaption><\/figure>\n<h2><\/h2>\n<h2>Why does Chip-on-Board offer advantages over Packaged LEDs?<\/h2>\n<p>Due to the small size of the LED chip relative to a packaged LED,\u00a0<a href=\"https:\/\/www.prophotonix.com\/technical-overview\/chip-on-board-led\/\"><u data-redactor-tag=\"u\"><strong data-redactor-tag=\"strong\">Chip-on-Board technology<\/strong><\/u><\/a>\u00a0(COB) allows for a much higher packing density than surface mount technology. This results in higher intensity &amp; greater uniformity for the user.<\/p>\n<p>The advantages of\u00a0Chip-on-Board LED\u00a0arrays are:<\/p>\n<ul>\n<li><span style=\"font-size: 11.5pt\">Compactness, due to small size of the LED chip<\/span><\/li>\n<li><span style=\"font-size: 11.5pt\">High intensity, particularly at close distances<\/span><\/li>\n<li><span style=\"font-size: 11.5pt\">High uniformity, even at close working distances<\/span><\/li>\n<li><span style=\"font-size: 11.5pt\">Best thermal performance for better lifetime, stability, and reliability<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><img decoding=\"async\" class=\"wp-image-1113 aligncenter\" src=\"https:\/\/www.prophotonix.com\/wp-content\/uploads\/2017\/12\/Chip-On-Board-LED-Advantages-Table-1024x446.jpg\" alt=\"Chip-on-board\" width=\"800\" height=\"348\" srcset=\"https:\/\/www.prophotonix.com\/wp-content\/uploads\/2017\/12\/Chip-On-Board-LED-Advantages-Table.jpg 1024w, https:\/\/www.prophotonix.com\/wp-content\/uploads\/2017\/12\/Chip-On-Board-LED-Advantages-Table-300x131.jpg 300w, https:\/\/www.prophotonix.com\/wp-content\/uploads\/2017\/12\/Chip-On-Board-LED-Advantages-Table-768x335.jpg 768w, https:\/\/www.prophotonix.com\/wp-content\/uploads\/2017\/12\/Chip-On-Board-LED-Advantages-Table-250x109.jpg 250w, https:\/\/www.prophotonix.com\/wp-content\/uploads\/2017\/12\/Chip-On-Board-LED-Advantages-Table-184x80.jpg 184w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>&nbsp;<\/p>\n<h2>Illustrated Example<\/h2>\n<p>The figure above shows the number of LEDs that can be placed on a 10mm square area and the resulting array power. As you can see the number of LEDs that can be placed using <u data-redactor-tag=\"u\"><strong data-redactor-tag=\"strong\">COB technology<\/strong><\/u>\u00a0is 38 times higher than that of T-Pack technology and 8.5 times higher than with surface mount technology.<\/p>\n<h2>Advantages of Chip-on-Board LED technology<\/h2>\n<p>The advantages of Chip-on-Board LED arrays include:<\/p>\n<ul>\n<li><span style=\"font-size: 11.5pt\"><strong data-redactor-tag=\"strong\">Compactness<\/strong>\u00a0due to small size of chip<\/span><\/li>\n<li><span style=\"font-size: 11.5pt\"><strong data-redactor-tag=\"strong\">High-Intensity<\/strong>, particularly at close distance<\/span><\/li>\n<li><span style=\"font-size: 11.5pt\"><strong data-redactor-tag=\"strong\">High-Uniformity<\/strong>, even at close working distances<\/span><\/li>\n<li><span style=\"font-size: 11.5pt\"><strong data-redactor-tag=\"strong\">Superior Thermal Performance<\/strong>\u00a0for better lifetime, stability and reliability<\/span><\/li>\n<\/ul>\n<h2>Conclusion<\/h2>\n<p><a href=\"https:\/\/www.prophotonix.com\/technical-overview\/chip-on-board-led\/\"><u data-redactor-tag=\"u\"><strong data-redactor-tag=\"strong\">Chip-on-board LED technology<\/strong><\/u><\/a> offers many advantages when compared to surface-mounted LEDs. The LED packing density achievable with chip-on-board technology allows illumination providers to deliver high intensity, high uniformity, and compact solutions ideal for a wide range of applications. ProPhotonix utilizes more than 25 years of experience in <u data-redactor-tag=\"u\"><strong data-redactor-tag=\"strong\">Chip-on-Board technology<\/strong><\/u>\u00a0to provide COB solutions for OEMs and system integrators worldwide.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>ProPhotonix provides a wide range of custom LED lights for dental imaging applications including miniature LED-based 3D-imaging light sources and LED lamps used in x-ray imaging applications. This post will discuss these applications, the critical requirements in these applications and how ProPhotonix achieved optimal performance.<\/p>\n","protected":false},"author":4,"featured_media":6345,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[147],"tags":[],"class_list":["post-1109","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chip-on-board-led","product-category-led-product"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Advantages of Chip-on-Board LED vs. Surface Mount LED<\/title>\n<meta name=\"description\" content=\"Learn about the advantages of Chip-on-Board LED arrays versus surface mount technology with descriptions of each, drawings and a comparison table.\" \/>\n<meta name=\"robots\" content=\"index, follow, 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