{"id":8771,"date":"2025-06-04T09:58:17","date_gmt":"2025-06-04T01:58:17","guid":{"rendered":"http:\/\/www.bestpcbs.com\/blog\/?p=8771"},"modified":"2025-07-16T11:05:16","modified_gmt":"2025-07-16T03:05:16","slug":"what-is-ims-pcb-ims-pcb-stack-up","status":"publish","type":"post","link":"https:\/\/www.bestpcbs.com\/blog\/2025\/06\/what-is-ims-pcb-ims-pcb-stack-up\/","title":{"rendered":"What is IMS PCB? IMS PCB Stack-up"},"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\/06\/what-is-ims-pcb-ims-pcb-stack-up\/#What_is_IMS_PCB\" >What is IMS 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:\/\/www.bestpcbs.com\/blog\/2025\/06\/what-is-ims-pcb-ims-pcb-stack-up\/#Features_of_IMS_PCB\" >Features of IMS PCB<\/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\/06\/what-is-ims-pcb-ims-pcb-stack-up\/#Types_of_IMS_Boards\" >Types of IMS Boards<\/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\/06\/what-is-ims-pcb-ims-pcb-stack-up\/#IMS_PCB_Stack-up\" >IMS PCB Stack-up<\/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\/06\/what-is-ims-pcb-ims-pcb-stack-up\/#How_Thick_is_an_IMS_PCB\" >How Thick is an IMS PCB?<\/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\/06\/what-is-ims-pcb-ims-pcb-stack-up\/#What_is_the_Difference_Between_IMS_PCB_and_FR4_PCB\" >What is the Difference Between IMS PCB and FR4 PCB?<\/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\/06\/what-is-ims-pcb-ims-pcb-stack-up\/#What_is_the_Thermal_Resistance_of_IMS_Board\" >What is the Thermal Resistance of IMS Board?<\/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\/06\/what-is-ims-pcb-ims-pcb-stack-up\/#EBest_Circuit_Best_Technology_%E2%80%93_Reliable_IMS_PCB_Manufacturer\" >EBest Circuit (Best Technology) \u2013 Reliable IMS PCB Manufacturer<\/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\/06\/what-is-ims-pcb-ims-pcb-stack-up\/#FAQs\" >FAQs<\/a><\/li><\/ul><\/nav><\/div>\n<div class=\"yzp-no-index\"><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_IMS_PCB\"><\/span>What is IMS PCB?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>IMS PCB stands for <strong><a href=\"https:\/\/www.bestpcbs.com\/products\/metal-core-pcb.htm\" title=\"\">Insulated Metal Substrate Printed Circuit Board<\/a><\/strong>. It\u2019s a specialized type of PCB designed to manage heat more effectively than standard boards. At its core, an IMS board is made of three main layers: a metal base (usually aluminum), a thermally conductive dielectric layer, and a copper circuit layer on top.<\/p>\n\n\n\n<p>This unique construction gives <a href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/06\/what-is-ims-pcb-ims-pcb-stack-up\/\" title=\"\">IMS boards<\/a> exceptional heat transfer capabilities. Unlike standard FR4 boards, where heat may accumulate and degrade performance over time, an IMS PCB actively channels heat away from components and dissipates it through the metal base. This process helps protect sensitive parts and improves overall device longevity.<\/p>\n\n\n\n<p>IMS PCBs are commonly used in LED lighting systems, power converters, automotive electronics, solar inverters, and industrial control systems. Any circuit that generates significant heat can benefit from the enhanced thermal management of an IMS PCB.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/06\/f9500e97-2d31-475c-85d2-8fcf155fc452.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/06\/f9500e97-2d31-475c-85d2-8fcf155fc452.jpg\" alt=\"What is IMS PCB? IMS PCB Stack-up\" class=\"wp-image-8796\" srcset=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/06\/f9500e97-2d31-475c-85d2-8fcf155fc452.jpg 600w, https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/06\/f9500e97-2d31-475c-85d2-8fcf155fc452-300x300.jpg 300w, https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/06\/f9500e97-2d31-475c-85d2-8fcf155fc452-150x150.jpg 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Features_of_IMS_PCB\"><\/span>Features of IMS PCB<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>IMS PCBs are favored in demanding applications because of their distinct advantages. Below are some of the standout features:<\/p>\n\n\n\n<p>1. The dielectric layer in an IMS PCB has much higher thermal conductivity compared to FR4.<\/p>\n\n\n\n<p>2. Once heat reaches the metal base, it is dispersed across a larger surface area or transferred to a heatsink.<\/p>\n\n\n\n<p>3. The metal base not only helps with heat but also strengthens the board. This added rigidity reduces the chances of warping, especially in environments with temperature cycling or mechanical stress.<\/p>\n\n\n\n<p>4. Components perform better and last longer when they remain within optimal temperature ranges.<\/p>\n\n\n\n<p>5. Most IMS boards are single-sided, simplifying the layout and making them easier to manufacture. However, advanced designs may include multilayer configurations when required.<\/p>\n\n\n\n<p>6. The metal base can also serve as a shield against EMI interference, which is useful in sensitive analog or RF applications.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Types_of_IMS_Boards\"><\/span>Types of IMS Boards<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Different IMS boards are used for different applications depending on the metal type and overall construction. Here are the three primary types:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Aluminum-Based IMS PCB<\/strong><\/li>\n<\/ul>\n\n\n\n<p>This is the most popular type and often the first choice for LED lighting and consumer electronics. Aluminum is lightweight, affordable, and has decent thermal performance. It strikes a balance between cost and functionality for a wide range of applications.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Copper-Based IMS PCB<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Copper has better thermal and electrical conductivity than aluminum. These boards are used in high-end applications where superior thermal management is critical, such as power modules, solar inverters, and automotive control systems. However, copper is more expensive and heavier than aluminum.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Steel-Based IMS PCB<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Less common but useful in environments where mechanical durability is crucial. Steel doesn\u2019t conduct heat as efficiently as copper or aluminum but provides maximum rigidity and resistance to deformation. It\u2019s mainly used in industrial or military electronics.<\/p>\n\n\n\n<p>Each type of IMS PCB is selected based on the specific needs of your project. Aluminum offers a good starting point, copper pushes performance higher, and steel provides strength for the harshest conditions.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"IMS_PCB_Stack-up\"><\/span>IMS PCB Stack-up<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>A critical element in IMS board design is the stack-up, which refers to how the different layers of the board are arranged. The typical <a href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/06\/what-is-ims-pcb-ims-pcb-stack-up\/\" title=\"\">IMS PCB stack-up<\/a> includes the following:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/06\/05CACDC0-34E9-4565-8C7B-CF44DB7C02BF.png\"><img loading=\"lazy\" decoding=\"async\" width=\"612\" height=\"347\" src=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/06\/05CACDC0-34E9-4565-8C7B-CF44DB7C02BF.png\" alt=\"IMS PCB Stack-up\" class=\"wp-image-8795\" srcset=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/06\/05CACDC0-34E9-4565-8C7B-CF44DB7C02BF.png 612w, https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/06\/05CACDC0-34E9-4565-8C7B-CF44DB7C02BF-300x170.png 300w\" sizes=\"auto, (max-width: 612px) 100vw, 612px\" \/><\/a><\/figure>\n\n\n\n<p>1. Copper Layer<\/p>\n\n\n\n<p>This is where all the electronic traces and pads are formed. The copper thickness usually ranges from 1 oz to 3 oz per square foot, depending on current requirements. It serves as the pathway for electrical signals and power.<\/p>\n\n\n\n<p>2. Dielectric Layer<\/p>\n\n\n\n<p>This is the thermally conductive but electrically insulating layer that separates the copper and the metal base. It\u2019s usually made of a polymer filled with ceramic particles. The dielectric plays a vital role in transferring heat efficiently while preventing short circuits. The thickness typically ranges from 0.075 mm to 0.2 mm, with thermal conductivity from 1 to 7 W\/m\u00b7K, depending on material grade.<\/p>\n\n\n\n<p>3. Metal Base<\/p>\n\n\n\n<p>This is typically made of aluminum, copper, or steel. The metal provides mechanical support and acts as the main heat dissipation path. Its thickness usually ranges from 1 mm to 2 mm, but thicker bases are used in heavy-duty applications.<\/p>\n\n\n\n<p>Some advanced designs may include additional dielectric and copper layers to create double-layer or multilayer IMS PCBs, though this increases cost and complexity.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_Thick_is_an_IMS_PCB\"><\/span>How Thick is an IMS PCB?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The total thickness of an IMS PCB is influenced by the materials used and application requirements. On average, the board thickness ranges from 0.8 mm to 3.2 mm, but custom configurations are available.<\/p>\n\n\n\n<p>Here\u2019s a breakdown of each layer\u2019s contribution to overall thickness:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Copper Layer: 35\u2013105 \u00b5m (1\u20133 oz)<\/li>\n\n\n\n<li>Dielectric Layer: 75\u2013200 \u00b5m<\/li>\n\n\n\n<li>Metal Base Layer: 1.0\u20132.0 mm (for aluminum or copper)<\/li>\n<\/ul>\n\n\n\n<p>Applications requiring high current typically demand thicker copper layers and sometimes thicker base metals. Likewise, if better insulation is needed, the dielectric layer can be made thicker, but this may reduce heat transfer efficiency. Engineers must balance electrical, thermal, and mechanical requirements to define the most suitable thickness.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/06\/C6384901-0EEC-464f-AD65-E3DF5E167613-1.png\"><img loading=\"lazy\" decoding=\"async\" width=\"653\" height=\"546\" src=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/06\/C6384901-0EEC-464f-AD65-E3DF5E167613-1.png\" alt=\"How Thick is an IMS PCB?\" class=\"wp-image-8799\" srcset=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/06\/C6384901-0EEC-464f-AD65-E3DF5E167613-1.png 653w, https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/06\/C6384901-0EEC-464f-AD65-E3DF5E167613-1-300x251.png 300w\" sizes=\"auto, (max-width: 653px) 100vw, 653px\" \/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_the_Difference_Between_IMS_PCB_and_FR4_PCB\"><\/span>What is the Difference Between IMS PCB and FR4 PCB?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Though both are used in electronic devices, the differences between IMS PCB and FR4 PCB are quite substantial:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Parameter<\/strong><\/td><td><strong>IMS PCB<\/strong><\/td><td><strong>FR4 PCB<\/strong><\/td><\/tr><tr><td><strong>Full Name<\/strong><\/td><td>Insulated Metal Substrate PCB<\/td><td>Flame Retardant Grade 4 PCB<\/td><\/tr><tr><td><strong>Base Material<\/strong><\/td><td>Metal core (usually aluminum or copper)<\/td><td>Fiberglass-reinforced epoxy (FR4)<\/td><\/tr><tr><td><strong>Thermal Conductivity<\/strong><\/td><td>High (1\u20137 W\/m\u00b7K, depending on dielectric)<\/td><td>Low (typically 0.3\u20130.4 W\/m\u00b7K)<\/td><\/tr><tr><td><strong>Heat Dissipation<\/strong><\/td><td>Excellent, through metal base<\/td><td>Limited, requires heatsinks or fans<\/td><\/tr><tr><td><strong>Layer Structure<\/strong><\/td><td>Usually single-sided<\/td><td>Can be single, double, or multilayer<\/td><\/tr><tr><td><strong>Mechanical Strength<\/strong><\/td><td>High (due to metal base)<\/td><td>Moderate (flexible but less rigid)<\/td><\/tr><tr><td><strong>Weight<\/strong><\/td><td>Heavier (due to metal core)<\/td><td>Lighter<\/td><\/tr><tr><td><strong>Manufacturing Cost<\/strong><\/td><td>Higher<\/td><td>Lower<\/td><\/tr><tr><td><strong>Applications<\/strong><\/td><td>Power electronics, LEDs, automotive, solar<\/td><td>Consumer electronics, IoT, communication devices<\/td><\/tr><tr><td><strong>Thermal Resistance<\/strong><\/td><td>Low (better heat flow)<\/td><td>High (poor thermal path)<\/td><\/tr><tr><td><strong>Electrical Insulation<\/strong><\/td><td>Through thermally conductive dielectric<\/td><td>Provided by FR4 material itself<\/td><\/tr><tr><td><strong>Common Copper Thickness<\/strong><\/td><td>1\u20133 oz<\/td><td>1\u20132 oz<\/td><\/tr><tr><td><strong>Typical Board Thickness<\/strong><\/td><td>0.8\u20133.2 mm<\/td><td>0.6\u20132.0 mm<\/td><\/tr><tr><td><strong>Design Complexity<\/strong><\/td><td>Lower (usually single-layer)<\/td><td>Higher (multilayer and complex routing possible)<\/td><\/tr><tr><td><strong>Price Range<\/strong><\/td><td>Mid to High<\/td><td>Low to Mid<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_the_Thermal_Resistance_of_IMS_Board\"><\/span>What is the Thermal Resistance of IMS Board?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Thermal resistance (R\u03b8) refers to a material\u2019s resistance to heat flow. In IMS PCBs, it is mainly influenced by the dielectric layer. A lower R\u03b8 means better heat transfer and lower temperature rise.<\/p>\n\n\n\n<p>The thermal resistance of an IMS board is calculated using:<\/p>\n\n\n\n<p>R\u03b8 = t \/ (k \u00d7 A)<\/p>\n\n\n\n<p>Where:<\/p>\n\n\n\n<p>t = dielectric thickness<\/p>\n\n\n\n<p>k = thermal conductivity<\/p>\n\n\n\n<p>A = surface area<\/p>\n\n\n\n<p>Typical values for IMS PCBs range from 0.2\u00b0C\/W to 1.0\u00b0C\/W, depending on materials and layout. Advanced dielectric materials with high k-values can push this number lower, helping improve performance in high-power applications.<\/p>\n\n\n\n<p>Designers often select materials with k \u2265 3 W\/m\u00b7K and limit the dielectric layer to under 150 \u00b5m to achieve low thermal resistance.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"EBest_Circuit_Best_Technology_%E2%80%93_Reliable_IMS_PCB_Manufacturer\"><\/span>EBest Circuit (Best Technology) \u2013 Reliable IMS PCB Manufacturer<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>If you&#8217;re sourcing IMS PCBs and want consistent quality, <a href=\"https:\/\/www.bestpcbs.com\/products\/metal-core-pcb.htm\" title=\"\">EBest Circuit (Best Technology)<\/a> is your go-to IMS PCB manufacturer. We have a dedicated production line for <a href=\"https:\/\/www.bestpcbs.com\/products\/metal-core-pcb.htm\" title=\"\">metal-core PCBs<\/a>, including aluminum, copper, and hybrid metal boards.<\/p>\n\n\n\n<p>Why Choose EBest Circuit (Best Technology)?<\/p>\n\n\n\n<p>&#x2705; Professional Engineering Support: Our experienced team helps optimize stackups, select dielectric materials, and improve thermal paths in your layout.<\/p>\n\n\n\n<p>&#x2705; ISO Certifications: We are certified with ISO9001, IATF16949, ISO13485, and AS9100D, serving a wide range of industries including medical, automotive, and aerospace.<\/p>\n\n\n\n<p>&#x2705; MES Traceability: Every board is tracked using our MES system to ensure complete traceability from raw materials to final shipment.<\/p>\n\n\n\n<p>&#x2705; Flexible Volumes: Whether you need a prototype batch or full-scale production, we offer scalable solutions.<\/p>\n\n\n\n<p>&#x2705; Comprehensive IMS PCB Assembly: Beyond PCB fabrication, we also offer full assembly including component sourcing, reflow soldering, inspection, and testing.<\/p>\n\n\n\n<p>From concept to finished product, we work closely with clients to deliver high-performance IMS PCBs that meet electrical, mechanical, and thermal demands.<\/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>1. What does IMS PCB stand for?<\/strong><\/p>\n\n\n\n<p>It stands for Insulated Metal Substrate Printed Circuit Board, a high-performance board for heat-sensitive applications.<\/p>\n\n\n\n<p><strong>2. Can IMS PCB be double-sided?<\/strong><\/p>\n\n\n\n<p>Yes, though less common. Double-sided IMS PCBs require more advanced fabrication and cost more, but they\u2019re available for complex designs.<\/p>\n\n\n\n<p><strong>3. Is IMS PCB good for automotive systems?<\/strong><\/p>\n\n\n\n<p>Absolutely. Automotive systems generate a lot of heat and require reliability. IMS PCBs are ideal for ECUs, power converters, and headlight controls.<\/p>\n\n\n\n<p><strong>4. What thermal conductivity should I choose for my dielectric layer?<\/strong><\/p>\n\n\n\n<p>It depends on the heat generated. For moderate power, 1\u20132 W\/m\u00b7K is enough. For high-power LEDs or power modules, choose \u22653 W\/m\u00b7K.<\/p>\n\n\n\n<p><strong>5. How do I request a quote from EBest Circuit (Best Technology)?<\/strong><\/p>\n\n\n\n<p>Send your Gerber files, stackup requirements, and assembly needs to our team, and we\u2019ll respond with a customized quote within 24 hours.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What is IMS PCB? IMS PCB stands for Insulated Metal Substrate Printed Circuit Board. It\u2019s a specialized type of PCB designed to manage heat more effectively than standard boards. At its core, an IMS board is made of three main layers: a metal base (usually aluminum), a thermally conductive dielectric layer, and a copper circuit [&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":[175,174,167,160,163],"tags":[1539,1538,1536],"class_list":["post-8771","post","type-post","status-publish","format-standard","hentry","category-best-pcb","category-bestpcb","category-mcpcb","category-metal-core-pcb","category-sinkpad","tag-ims-pcb-assembly","tag-ims-pcb-definition","tag-ims-pcb-manufacturer"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/posts\/8771","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=8771"}],"version-history":[{"count":5,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/posts\/8771\/revisions"}],"predecessor-version":[{"id":10447,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/posts\/8771\/revisions\/10447"}],"wp:attachment":[{"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/media?parent=8771"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/categories?post=8771"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/tags?post=8771"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}