{"id":10872,"date":"2025-07-22T16:57:43","date_gmt":"2025-07-22T08:57:43","guid":{"rendered":"https:\/\/www.bestpcbs.com\/blog\/?p=10872"},"modified":"2025-07-22T16:59:15","modified_gmt":"2025-07-22T08:59:15","slug":"chip-on-board-led-strip-all-you-need-to-know","status":"publish","type":"post","link":"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/chip-on-board-led-strip-all-you-need-to-know\/","title":{"rendered":"Chip\u00a0On\u00a0Board\u00a0LED\u00a0Strip\u200b: All You Need to Know"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/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:\/\/www.bestpcbs.com\/blog\/2025\/07\/chip-on-board-led-strip-all-you-need-to-know\/#What_Is_a_Chip_on_Board_LED\" >What Is a Chip on Board LED?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/chip-on-board-led-strip-all-you-need-to-know\/#LED_Strip_Chip_Types\" >LED Strip Chip Types<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/chip-on-board-led-strip-all-you-need-to-know\/#COB_LED_Strip_vs_SMD_LED_Strip\" >COB LED Strip vs SMD LED Strip<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/chip-on-board-led-strip-all-you-need-to-know\/#Can_an_LED_Light_Strip_Be_Repaired\" >Can an LED Light Strip Be Repaired?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/chip-on-board-led-strip-all-you-need-to-know\/#How_to_Check_if_a_LED_Strip_Is_Bad\" >How to Check if a LED Strip Is Bad?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/chip-on-board-led-strip-all-you-need-to-know\/#What_Is_the_Lifespan_of_a_COB_Light\" >What Is the Lifespan of a COB Light?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/chip-on-board-led-strip-all-you-need-to-know\/#Which_Is_Better_LED_Strip_or_LED_COB\" >Which Is Better: LED Strip or LED COB?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/chip-on-board-led-strip-all-you-need-to-know\/#Key_Parts_in_Chip_on_Board_LED_Strip\" >Key Parts in Chip on Board LED Strip<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/chip-on-board-led-strip-all-you-need-to-know\/#COB_LED_PCB_Wire_Bonding_Process\" >COB LED PCB Wire Bonding Process<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/chip-on-board-led-strip-all-you-need-to-know\/#EBest_Circuit_Best_Technology_%E2%80%93_Your_Trusted_COB_LED_Strip_Aluminum_PCB_Manufacturer\" >EBest Circuit (Best Technology) \u2013 Your Trusted COB LED Strip Aluminum PCB Manufacturer<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/chip-on-board-led-strip-all-you-need-to-know\/#FAQs\" >FAQs<\/a><\/li><\/ul><\/nav><\/div>\n<div class=\"yzp-no-index\"><\/div>\n<p>If you&#8217;re upgrading your lighting system, you&#8217;ve probably come across the term <a href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/05\/cob-led-pcb-cob-led-on-pcb-assembly-manufacturer\/\" title=\"\">chip on board LED<\/a> strip. It&#8217;s not just another LED strip\u2014it\u2019s a major step forward in lighting design. These strips provide continuous, smooth light with no visible dots, perfect for people who want clean lines, consistent brightness, and high efficiency.<\/p>\n\n\n\n<p>In this guide, we\u2019ll walk through everything you need to know about <a href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/chip-on-board-led-strip-all-you-need-to-know\/\" title=\"\">COB LED strips<\/a>, from how they\u2019re built to how they compare to other LED types, and even how to spot issues or repair them. Whether you&#8217;re working on a custom LED project or just curious about your options, this guide is for you.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Is_a_Chip_on_Board_LED\"><\/span>What Is a Chip on Board LED?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>A <a href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/chip-on-board-led-strip-all-you-need-to-know\/\" title=\"\">Chip on Board (COB) LED<\/a> is a type of LED package where many tiny LED chips are directly bonded to the surface of an aluminum circuit board. Unlike traditional LEDs, which are placed and packaged individually (often referred to as SMD or Surface Mounted Devices), COB technology groups multiple LEDs into a single, dense lighting module.<\/p>\n\n\n\n<p>COB packaging technology is a manufacturing process that bonds the main body of the bare chip and the I\/O terminals onto a PCB (printed circuit board) using conductive\/thermal adhesives. The core steps of this process include using an ultrasonic hot-press welding equipment (such as a Bonder machine) to connect the metal wires (aluminum or gold) between the chip and the PCB pads. After passing the test, the resin adhesive is then applied.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/07\/A9F32A15-BC04-4742-9008-FC55E25A5629.png\"><img decoding=\"async\" src=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/07\/A9F32A15-BC04-4742-9008-FC55E25A5629.png\" alt=\"Chip\u00a0On\u00a0Board\u00a0LED\u00a0Strip\u200b: All You Need to Know\" class=\"wp-image-10877\"\/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"LED_Strip_Chip_Types\"><\/span>LED Strip Chip Types<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>When you look at the specifications of any LED strip, you\u2019ll likely come across numbers like 3528, 5050, or 2835. These refer to the chip sizes in tenths of millimeters, and each has different brightness, efficiency, and application benefits. Let\u2019s break them down:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>3528 LED Chips<\/strong><\/li>\n<\/ul>\n\n\n\n<p>These are some of the oldest LED chips still in use. They are compact and energy-efficient but offer low brightness. They\u2019re ideal for soft lighting or background accents.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>5050 LED Chips<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Much larger and brighter than 3528s, 5050 chips are often used in RGB LED strips because each chip can hold three diodes (red, green, and blue). They&#8217;re great for color-changing applications.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>2835 LED Chips<\/strong><\/li>\n<\/ul>\n\n\n\n<p>A newer design that\u2019s slimmer than 5050s but offers improved heat dissipation and better brightness efficiency. These are increasingly popular in commercial lighting.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>COB LED Chips<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Rather than a single chip, COB is a collection of many tiny LED dies directly mounted on the board. Their design creates a dot-free beam of light, and they perform extremely well in tight spaces or close-range lighting tasks.<\/p>\n\n\n\n<p>If you&#8217;re after seamless lighting or professional installations, COB LED strips are your best bet. They\u2019ve become especially popular in modern architectural and display lighting.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"COB_LED_Strip_vs_SMD_LED_Strip\"><\/span>COB LED Strip vs SMD LED Strip<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>If you\u2019re debating between <a href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/04\/dob-led-vs-cob-led-vs-smd-led-3-options-for-led-pcb\/\" title=\"\">COB and SMD strips<\/a>, it helps to look at how they differ in function and appearance. Here&#8217;s a detailed comparison:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Feature<\/strong><\/td><td><strong>COB LED Strip<\/strong><\/td><td><strong>SMD LED Strip<\/strong><\/td><\/tr><tr><td>Light Appearance<\/td><td>Smooth, continuous with no visible dots<\/td><td>Dotted light, noticeable gaps between LEDs<\/td><\/tr><tr><td>Beam Uniformity<\/td><td>Excellent<\/td><td>Depends on LED pitch (spacing)<\/td><\/tr><tr><td>Flexibility<\/td><td>More flexible due to compact design<\/td><td>Slightly less flexible, especially with larger chips<\/td><\/tr><tr><td>Brightness<\/td><td>Very bright with even diffusion<\/td><td>Varies by chip type (2835, 5050, etc.)<\/td><\/tr><tr><td>Repairability<\/td><td>Harder to repair due to compact chip bonding<\/td><td>Easier to replace individual components<\/td><\/tr><tr><td>Heat Dissipation<\/td><td>Better thermal performance<\/td><td>May require heat sinks for high power strips<\/td><\/tr><tr><td>Applications<\/td><td>High-end design, task lighting, seamless decor<\/td><td>General-purpose, ambient, or RGB lighting<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Use COB LED strips for premium results in high-visibility areas. Choose SMD strips when budget is tighter or when you want color-changing effects that don\u2019t require smooth lighting.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Can_an_LED_Light_Strip_Be_Repaired\"><\/span>Can an LED Light Strip Be Repaired?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Yes, LED strips can be repaired, but the method depends on the type of strip you\u2019re using.<\/p>\n\n\n\n<p>For SMD LED strips, it\u2019s relatively straightforward. If a section stops working, you can usually cut it out and solder in a new section. Most SMD strips are modular, with cut marks every few LEDs.<\/p>\n\n\n\n<p>For COB LED strips, repairs are more complex. The chips are not easily accessible, and due to the dense configuration and phosphor coating, individual chip replacement isn\u2019t practical. However, if there\u2019s a damaged copper trace, connector issue, or visible burnt spot, basic soldering can still fix it.<\/p>\n\n\n\n<p>It\u2019s also worth checking if a segment is simply underpowered or affected by a voltage drop\u2014especially in longer strips, which lose voltage near the end. In those cases, adding a second power input at the far end often solves the problem.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Check_if_a_LED_Strip_Is_Bad\"><\/span>How to Check if a LED Strip Is Bad?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Diagnosing a bad LED strip doesn\u2019t require fancy tools\u2014just a little patience and a multimeter. Here are some ways to check:<\/p>\n\n\n\n<p><strong>1. Visual Inspection:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\"><\/ol>\n\n\n\n<p>This is the most easy way to check. Look for signs of physical damage\u2014burn marks, cracked coatings, loose connectors, or broken solder joints.<\/p>\n\n\n\n<p><strong>2. Power Supply Testing:<\/strong><\/p>\n\n\n\n<p>Sometimes the strip is fine, but the power adapter is faulty. Test your power source first. Make sure your 12V COB LED strip is getting the right voltage.<\/p>\n\n\n\n<p><strong>3. Voltage Drop Test:<\/strong><\/p>\n\n\n\n<p>If only part of the strip is dim, measure voltage at different points along the strip. Significant voltage drop means you need to power the strip from both ends.<\/p>\n\n\n\n<p><strong>4. Continuity Check:<\/strong><\/p>\n\n\n\n<p>Use a multimeter to check for continuity across copper pads. No signal means the path is broken.<\/p>\n\n\n\n<p><strong>5. Cut and Test Small Segments:<\/strong><\/p>\n\n\n\n<p>If one part is failing, cut a working piece off and connect it to power. If it lights up fine, the issue is likely with a specific segment or connector.<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">Pro tip: Always double-check your polarity. Reversing positive and negative wires is a common mistake and can damage certain strips.<\/mark><\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Is_the_Lifespan_of_a_COB_Light\"><\/span>What Is the Lifespan of a COB Light?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>One of the biggest advantages of COB LEDs is their long lifespan. On average, COB LED strips last <strong>30,000 to 50,000 hours<\/strong>, depending on the operating environment and quality of components.<\/p>\n\n\n\n<p>Factors that influence lifespan:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ambient Temperature: High temperatures can shorten LED life.<\/li>\n\n\n\n<li>Power Regulation: Using a high-quality constant voltage power supply protects the strip from surges.<\/li>\n\n\n\n<li>Usage Patterns: Long continuous use without cooling may reduce performance over time.<\/li>\n<\/ul>\n\n\n\n<p>Some well-designed COB LED PCB assemblies use aluminum-core boards (MCPCBs) to pull heat away from the chips, which extends their service life significantly.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Which_Is_Better_LED_Strip_or_LED_COB\"><\/span>Which Is Better: LED Strip or LED COB?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>So, which is better\u2014traditional LED strip or COB LED strip? It really depends on your lighting goals.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Choose LED COB strips when you want smooth light, especially for under-cabinet lighting, mirrors, workbenches, or architectural edges.<\/li>\n\n\n\n<li>Stick to traditional LED strips (SMD) if you need RGB lighting, dynamic color control, or a cheaper solution for background or ambient lighting.<\/li>\n<\/ul>\n\n\n\n<p>RGB COB LED strips now offer the best of both worlds\u2014color mixing plus seamless appearance\u2014though they\u2019re still less common than standard RGB strips.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/07\/08D2737B-85B5-4126-B3B6-B97BE86692EC.png\"><img decoding=\"async\" src=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/07\/08D2737B-85B5-4126-B3B6-B97BE86692EC.png\" alt=\"Which Is Better: LED Strip or LED COB?\" class=\"wp-image-10879\"\/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Key_Parts_in_Chip_on_Board_LED_Strip\"><\/span>Key Parts in Chip on Board LED Strip<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>One of the most critical components in a chip on board (COB) LED strip is printed circuit board (PCB) base. COB LED strips commonly use <a href=\"https:\/\/www.bestpcbs.com\/products\/multi-layer-MCPCB.htm\" title=\"\">aluminum-core printed circuit boards<\/a> (aluminum PCBs) as their foundation because of their excellent thermal conductivity and structural stability. In COB design, multiple LED chips are densely mounted on the same board, which generates a significant amount of heat during operation. Without proper heat dissipation, the LEDs can overheat, resulting in reduced brightness and shorter lifespan.<\/p>\n\n\n\n<p>The main function of the <a href=\"https:\/\/www.bestpcbs.com\/products\/multi-layer-MCPCB.htm\" title=\"\">aluminum PCB<\/a> is to efficiently transfer heat away from the LED chips to the aluminum base layer, which then releases it into the surrounding air or mounting surface. This built-in heat dissipation capability makes aluminum PCBs especially suitable for compact and enclosed lighting applications such as cove lighting, display cabinets, and vanity mirrors.<\/p>\n\n\n\n<p>Additionally, aluminum PCBs provide mechanical strength to the strip, preventing it from bending too easily during installation or operation, which helps protect the internal components and ensures consistent performance.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"COB_LED_PCB_Wire_Bonding_Process\"><\/span>COB LED PCB Wire Bonding Process<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The wire bonding process for COB (Chip on Board) LED PCBs involves several critical steps to ensure reliable chip mounting and electrical connection. Below is a detailed breakdown of the full procedure:<\/p>\n\n\n\n<p><strong>Step 1: Wafer Expansion<\/strong><\/p>\n\n\n\n<p>Using a wafer expander, the LED wafer film provided by the supplier is stretched evenly. This process separates the closely packed LED chips on the film, making it easier to pick up individual chips during die bonding.<\/p>\n\n\n\n<p><strong>Step 2: Silver Paste Application<\/strong><\/p>\n\n\n\n<p>Place the expanded wafer ring onto a dispensing platform coated with silver paste. For loose (unmounted) LED chips, a dispenser applies precise amounts of silver paste directly onto the PCB\u2019s bonding pads. This paste serves as the conductive adhesive for mounting the chips.<\/p>\n\n\n\n<p><strong>Step 3: Die Placement (Die Bonding)<\/strong><\/p>\n\n\n\n<p>Insert the silver-pasted wafer ring into a die bonding fixture. Under a microscope, the operator uses a precision tool to pick and place each LED chip onto the PCB, positioning it accurately on the pre-applied silver paste.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/07\/5644BDF3-5F11-4db0-A950-1954C7ED997C.png\"><img decoding=\"async\" src=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/07\/5644BDF3-5F11-4db0-A950-1954C7ED997C.png\" alt=\"COB LED PCB Wire Bonding Process\" class=\"wp-image-10875\"\/><\/a><\/figure>\n\n\n\n<p><strong>Step 4: Pre-Curing (Silver Paste Curing)<\/strong><\/p>\n\n\n\n<p>Place the die-mounted PCB into a thermal oven for controlled heating. This cures the silver paste and secures the LED chips in place. It&#8217;s important not to over-cure the board\u2014prolonged heating may oxidize the LED chip surface (turning it yellow), which makes wire bonding difficult. Note: If only IC chips are bonded, this LED die bonding step may be skipped.<\/p>\n\n\n\n<p><strong>Step 5: IC Die Attachment<\/strong><\/p>\n\n\n\n<p>For IC bonding, dispense a small amount of red or black epoxy adhesive onto the PCB at the designated IC mounting location. Use anti-static tools (e.g., vacuum pen or tweezers) to place the IC die accurately onto the adhesive.<\/p>\n\n\n\n<p><strong>Step 6: Epoxy Curing<\/strong><\/p>\n\n\n\n<p>Place the IC-mounted PCB into a thermal oven or on a large heated platform to cure the adhesive. This process can also be done via natural curing at room temperature, although it takes longer.<\/p>\n\n\n\n<p><strong>Step 7: Wire Bonding (Aluminum Wire Connection)<\/strong><\/p>\n\n\n\n<p>Using an aluminum wire bonder, connect fine aluminum wire between the bonding pads on the LED chips or IC die and the corresponding pads on the PCB. This forms the internal wire connections for the COB assembly.<\/p>\n\n\n\n<p><strong>Step 8: Electrical Testing (Pre-Test)<\/strong><\/p>\n\n\n\n<p>Use dedicated testing tools (depending on the COB product type) to check each PCB for electrical functionality. A high-precision regulated power supply is commonly used. Any defective boards are flagged and sent for repair.<\/p>\n\n\n\n<p><strong>Step 9: Encapsulation (Dispensing Epoxy or Silicone)<\/strong><\/p>\n\n\n\n<p>Dispense a carefully measured amount of AB epoxy over each bonded LED chip using a dispensing machine. For ICs, a black encapsulant is typically used. Additional protective packaging is applied depending on customer requirements.<\/p>\n\n\n\n<p><strong>Step 10: Final Curing<\/strong><\/p>\n\n\n\n<p>Place the encapsulated PCB into a thermal oven and allow it to cure under controlled temperature and time settings. The curing schedule may vary depending on the type of encapsulant and the final product\u2019s environmental requirements.<\/p>\n\n\n\n<p><strong>Step 11: Final Testing<\/strong><\/p>\n\n\n\n<p>After curing, perform a final round of electrical testing using specialized equipment to verify performance. Boards are sorted based on quality, and any issues are identified for rework or rejection.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"EBest_Circuit_Best_Technology_%E2%80%93_Your_Trusted_COB_LED_Strip_Aluminum_PCB_Manufacturer\"><\/span>EBest Circuit (Best Technology) \u2013 Your Trusted COB LED Strip Aluminum PCB Manufacturer<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>At EBest Circuit (Best Technology), we\u2019re proud to provide advanced PCB manufacturing for lighting applications\u2014including <a href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/04\/dob-led-vs-cob-led-vs-smd-led-3-options-for-led-pcb\/\" title=\"\">COB LED strip<\/a>s and custom MCPCB designs. Our engineers understand thermal performance, phosphor consistency, and bonding reliability.<\/p>\n\n\n\n<p>Our COB LED PCB services include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>One-stop solution: from layout to finished PCBs<\/li>\n\n\n\n<li>Flexible voltage support: including 12V COB LED strips<\/li>\n\n\n\n<li>Customized color temperatures and CRI ratings<\/li>\n\n\n\n<li>Support for RGB COB LED strip designs<\/li>\n\n\n\n<li>Advanced thermal management with MCPCB options<\/li>\n<\/ul>\n\n\n\n<p>If you are interested in COB LED PCB manufacturing, welcome to email us at <a href=\"mailto:sales@bestpcbs.com\">sales@bestpcbs.com<\/a> or leave your comments below this blog.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"FAQs\"><\/span>FAQs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Q1: Can COB LED strips be dimmed?<\/strong><\/p>\n\n\n\n<p>Yes, most COB strips support PWM dimming. Make sure your power supply and controller are compatible.<\/p>\n\n\n\n<p><strong>Q2: Are COB LED strips waterproof?<\/strong><\/p>\n\n\n\n<p>Many are! Look for IP65 or higher if you\u2019re using them outdoors. Silicone-coated versions offer good protection.<\/p>\n\n\n\n<p><strong>Q3: How do I install a COB LED strip?<\/strong><\/p>\n\n\n\n<p>Clean the surface, peel the adhesive backing, and press the strip in place. Use aluminum channels for better heat dissipation.<\/p>\n\n\n\n<p><strong>Q4: Can I use COB LED strips with smart home systems?<\/strong><\/p>\n\n\n\n<p>Yes! Pair them with a compatible dimmer or RGB controller connected to your smart hub.<\/p>\n\n\n\n<p><strong>Q5: What voltage do COB LED strips use?<\/strong><\/p>\n\n\n\n<p>Most commonly 12V or 24V. Always match your power supply to the strip&#8217;s input rating.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>If you&#8217;re upgrading your lighting system, you&#8217;ve probably come across the term chip on board LED strip. It&#8217;s not just another LED strip\u2014it\u2019s a major step forward in lighting design. These strips provide continuous, smooth light with no visible dots, perfect for people who want clean lines, consistent brightness, and high efficiency. In this guide, [&hellip;]<\/p>\n","protected":false},"author":623,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[175,174,37,167,160],"tags":[1812,1809,1810],"class_list":["post-10872","post","type-post","status-publish","format-standard","hentry","category-best-pcb","category-bestpcb","category-faq","category-mcpcb","category-metal-core-pcb","tag-12v-cob-led-strip","tag-chip-on-board-led-strip","tag-rgb-cob-led-strip"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/posts\/10872","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/users\/623"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/comments?post=10872"}],"version-history":[{"count":2,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/posts\/10872\/revisions"}],"predecessor-version":[{"id":10882,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/posts\/10872\/revisions\/10882"}],"wp:attachment":[{"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/media?parent=10872"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/categories?post=10872"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/tags?post=10872"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}