{"id":3917,"date":"2026-05-13T05:46:01","date_gmt":"2026-05-13T05:46:01","guid":{"rendered":"https:\/\/blogs.lcsc.com\/blog\/?p=3917"},"modified":"2026-05-13T05:46:01","modified_gmt":"2026-05-13T05:46:01","slug":"guide-circuit-board","status":"publish","type":"post","link":"https:\/\/blogs.lcsc.com\/blog\/guide-circuit-board\/","title":{"rendered":"A Beginner\u2019s Guide to Circuit Board, Components &#038; Materials"},"content":{"rendered":"<p><span data-font-family=\"Arial\">TL;DR: A PCB (Printed <a href=\"https:\/\/www.lcsc.com\/search?q=Circuit%2520Board&amp;s_z=n_q_Circuit%2520Board\">Circuit Board<\/a>) mechanically supports and electrically connects electronic components using copper traces etched onto a non-conductive fibreglass substrate. PCBs range from simple single-layer boards to complex multilayer designs with 20+ copper layers. Material choice, layer count, and surface finish determine performance, cost, and manufacturing compatibility.<\/span><\/p>\n<h2><b><span data-font-family=\"Arial\">Key Takeaways<\/span><\/b><\/h2>\n<ul>\n<li><span data-font-family=\"Arial\">A PCB mechanically supports and electrically connects electronic components using conductive copper traces etched onto a non-conductive substrate.<\/span><\/li>\n<li><span data-font-family=\"Arial\">PCBs range from simple single-layer boards to complex multilayer PCBs with 20 or more copper layers.<\/span><\/li>\n<li><span data-font-family=\"Arial\">Core materials include FR-4 fibreglass, high-frequency laminates, flexible polyimide, and metal-core substrates, each suited to different applications.<\/span><\/li>\n<li><span data-font-family=\"Arial\">Electronic components fall into two main assembly categories: through-hole (THT) and surface-mount (SMD\/SMT).<\/span><\/li>\n<li><span data-font-family=\"Arial\">Understanding PCB design basics, layer stack-up, and material selection is critical before placing your first component.<\/span><\/li>\n<\/ul>\n<h2><b><span data-font-family=\"Arial\">1. What Is a Circuit Board?<\/span><\/b><\/h2>\n<p><span data-font-family=\"Arial\">A printed circuit board is a flat board that holds and connects electronic components. The board itself is made of insulating material, typically fibreglass, and the &#8216;nerves&#8217; are thin copper lines called traces that carry electrical signals between components. The term &#8216;printed&#8217; refers to the photolithographic process used during manufacturing \u2014 not hand-drawn. The result is a repeatable, precise, and miniaturised platform for building electronic circuits.<\/span><\/p>\n<h2><b><span data-font-family=\"Arial\">2. PCB Design Basics: How a<\/span><\/b><b><span data-font-family=\"Arial\">Circuit<\/span><\/b><b><span data-font-family=\"Arial\">Board Is Structured<\/span><\/b><\/h2>\n<h3><b><span data-font-family=\"Arial\">The Layer Stack-Up<\/span><\/b><\/h3>\n<p><span data-font-family=\"Arial\">Every PCB has at least two sides: the top (component side) and the bottom (solder side). More complex boards add internal copper layers. A typical 4-layer PCB has: Layer 1 (Top) for signal traces and component pads; Layer 2 as a dedicated ground plane; Layer 3 as a dedicated power plane; Layer 4 (Bottom) for additional signal traces. Layers are separated by prepreg bonded under heat and pressure during lamination.<\/span><\/p>\n<p><span data-font-family=\"Arial\">Lead-Free Reflow &amp; Tg: Standard FR-4 has a glass transition temperature (Tg) of 130\u2013140\u00b0C. Lead-free reflow soldering peaks at 250\u2013260\u00b0C \u2014 well above standard FR-4&#8217;s Tg. For lead-free processes, use High-Tg FR-4 (Tg 170\u2013180\u00b0C) to prevent delamination or warpage during assembly. This is mandatory for any board going through a modern SMT reflow oven without tin-lead solder.<\/span><\/p>\n<h2><b><span data-font-family=\"Arial\">3. Electronic Components on a PCB<\/span><\/b><\/h2>\n<table>\n<tbody>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" width=\"133\"><b><span data-font-family=\"Arial\">Component<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"53\"><b><span data-font-family=\"Arial\">Symbol<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"224\"><b><span data-font-family=\"Arial\">Function<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"213\"><b><span data-font-family=\"Arial\">Common Values \/ Packages<\/span><\/b><\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" width=\"133\"><b><span data-font-family=\"Arial\">Resistor<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"53\"><span data-font-family=\"Arial\">R<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"224\"><span data-font-family=\"Arial\">Limits current flow; sets voltage levels<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"213\"><span data-font-family=\"Arial\">1 \u03a9 \u2013 10 M\u03a9; 0402, 0603, 0805 SMD<\/span><\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" width=\"133\"><b><span data-font-family=\"Arial\">Capacitor<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"53\"><span data-font-family=\"Arial\">C<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"224\"><span data-font-family=\"Arial\">Stores and releases charge; filters noise<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"213\"><span data-font-family=\"Arial\">1 pF \u2013 10,000 \u00b5F; MLCC, electrolytic, tantalum<\/span><\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" width=\"133\"><b><span data-font-family=\"Arial\">Inductor<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"53\"><span data-font-family=\"Arial\">L<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"224\"><span data-font-family=\"Arial\">Stores energy in a magnetic field; filters RF<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"213\"><span data-font-family=\"Arial\">1 nH \u2013 100 mH; power inductors, ferrite beads<\/span><\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" width=\"133\"><b><span data-font-family=\"Arial\">Diode<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"53\"><span data-font-family=\"Arial\">D<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"224\"><span data-font-family=\"Arial\">Allows current in one direction only<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"213\"><span data-font-family=\"Arial\">Signal, Schottky, Zener, LED<\/span><\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" width=\"133\"><b><span data-font-family=\"Arial\">Transistor<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"53\"><span data-font-family=\"Arial\">Q<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"224\"><span data-font-family=\"Arial\">Switches or amplifies current<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"213\"><span data-font-family=\"Arial\">BJT (NPN\/PNP), MOSFET (N\/P-channel)<\/span><\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" width=\"133\"><b><span data-font-family=\"Arial\">Integrated Circuit<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"53\"><span data-font-family=\"Arial\">U \/ IC<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"224\"><span data-font-family=\"Arial\">Complex function in one package<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"213\"><span data-font-family=\"Arial\">MCU, power IC, op-amp, FPGA, memory<\/span><\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" width=\"133\"><b><span data-font-family=\"Arial\">Crystal Oscillator<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"53\"><span data-font-family=\"Arial\">Y \/ XTAL<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"224\"><span data-font-family=\"Arial\">Provides precise clock frequency<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"213\"><span data-font-family=\"Arial\">8 MHz, 16 MHz, 32.768 kHz<\/span><\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" width=\"133\"><b><span data-font-family=\"Arial\">Connector<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"53\"><span data-font-family=\"Arial\">J \/ P<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"224\"><span data-font-family=\"Arial\">Interface for cables, power, data<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"213\"><span data-font-family=\"Arial\">USB, JST, pin headers, FPC<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><b><span data-font-family=\"Arial\">4. PCB Materials Comparison<\/span><\/b><\/h2>\n<table>\n<tbody>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" width=\"160\"><b><span data-font-family=\"Arial\">Material<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"96\"><b><span data-font-family=\"Arial\">Dk<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"208\"><b><span data-font-family=\"Arial\">Key Property<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"160\"><b><span data-font-family=\"Arial\">Typical Application<\/span><\/b><\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" width=\"160\"><b><span data-font-family=\"Arial\">FR-4 (Fibreglass \/ Epoxy)<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"96\"><span data-font-family=\"Arial\">4.2\u20134.8<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"208\"><span data-font-family=\"Arial\">Balanced cost, strength, and electrical performance<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"160\"><span data-font-family=\"Arial\">General electronics, consumer, industrial<\/span><\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" width=\"160\"><b><span data-font-family=\"Arial\">High-Tg FR-4<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"96\"><span data-font-family=\"Arial\">4.2\u20134.5<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"208\"><span data-font-family=\"Arial\">Withstands higher temperatures (Tg &gt; 170\u00b0C)<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"160\"><span data-font-family=\"Arial\">Automotive, industrial, lead-free assemblies<\/span><\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" width=\"160\"><b><span data-font-family=\"Arial\">Polyimide (Flexible)<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"96\"><span data-font-family=\"Arial\">3.2\u20133.5<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"208\"><span data-font-family=\"Arial\">Flexible and foldable; excellent thermal stability<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"160\"><span data-font-family=\"Arial\">Wearables, flex cables, aerospace<\/span><\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" width=\"160\"><b><span data-font-family=\"Arial\">Rogers \/ PTFE Laminates<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"96\"><span data-font-family=\"Arial\">2.2\u201310.2<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"208\"><span data-font-family=\"Arial\">Very low loss at high frequencies<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"160\"><span data-font-family=\"Arial\">RF, microwave, antennas above 1 GHz<\/span><\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" width=\"160\"><b><span data-font-family=\"Arial\">Aluminium \/ Metal Core<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"96\"><span data-font-family=\"Arial\">~2.2<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"208\"><span data-font-family=\"Arial\">Excellent thermal conductivity<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"160\"><span data-font-family=\"Arial\">LED lighting, power electronics<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span data-font-family=\"Arial\">\u00a0<\/span><b><span data-font-family=\"Arial\">5. Multilayer PCB: When One Layer Is Not Enough<\/span><\/b><\/h2>\n<table>\n<tbody>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" width=\"133\"><b><span data-font-family=\"Arial\">Board Type<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"93\"><b><span data-font-family=\"Arial\">Layers<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"250\"><b><span data-font-family=\"Arial\">Typical Use Case<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"146\"><b><span data-font-family=\"Arial\">Relative Cost<\/span><\/b><\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" width=\"133\"><b><span data-font-family=\"Arial\">Single-layer<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"93\"><span data-font-family=\"Arial\">1<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"250\"><span data-font-family=\"Arial\">Simple appliances, LED strips, basic controllers<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"146\"><span data-font-family=\"Arial\">Lowest<\/span><\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" width=\"133\"><b><span data-font-family=\"Arial\">Double-sided<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"93\"><span data-font-family=\"Arial\">2<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"250\"><span data-font-family=\"Arial\">Arduino-style boards, power supplies, IoT modules<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"146\"><span data-font-family=\"Arial\">Low<\/span><\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" width=\"133\"><b><span data-font-family=\"Arial\">4-layer<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"93\"><span data-font-family=\"Arial\">4<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"250\"><span data-font-family=\"Arial\">Raspberry Pi, ESP32 dev boards, industrial controllers<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"146\"><span data-font-family=\"Arial\">Moderate<\/span><\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" width=\"133\"><b><span data-font-family=\"Arial\">8+ layers<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"93\"><span data-font-family=\"Arial\">8\u201316+<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"250\"><span data-font-family=\"Arial\">Smartphones, laptops, servers, RF modules<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"146\"><span data-font-family=\"Arial\">High<\/span><\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" width=\"133\"><b><span data-font-family=\"Arial\">HDI PCB<\/span><\/b><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"93\"><span data-font-family=\"Arial\">Any<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"250\"><span data-font-family=\"Arial\">High-density consumer electronics, 5G modules, advanced medical<\/span><\/td>\n<td colspan=\"1\" rowspan=\"1\" width=\"146\"><span data-font-family=\"Arial\">Premium<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><b><span data-font-family=\"Arial\">Frequently Asked Questions<\/span><\/b><\/h2>\n<h4><b><span data-font-family=\"Arial\">What is the difference between a PCB and a PCBA?<\/span><\/b><\/h4>\n<p><strong>A\uff1a<\/strong>A Printed Circuit Board (<a href=\"https:\/\/blogs.lcsc.com\/blog\/footprint-solutions-in-pcb-design-standards-challenges-and-best-practices\/\">PCB<\/a>) is the foundational substrate featuring etched copper pathways but remains a non-functional component until it undergoes assembly to become a Printed Circuit Board Assembly (<a href=\"https:\/\/blogs.lcsc.com\/blog\/pcb-assembly-process-smt-soldering\/\">PCBA<\/a>). This process involves soldering various electronic components, such as microcontrollers and voltage regulators, using SMT or THT techniques. The result is a fully integrated, active system capable of performing its intended logical functions.<\/p>\n<h4><b><span data-font-family=\"Arial\">Why are most PCBs green?<\/span><\/b><\/h4>\n<p><span data-font-family=\"Arial\"><strong>A\uff1a<\/strong>The green hue results from the solder mask, a protective coating applied to prevent oxidation; this color became the industry standard because green epoxy pigments historically offered the most reliable curing properties and chemical resistance. Beyond tradition, green provides optimal visual contrast against copper traces and white silkscreen markings, significantly enhancing the precision of Automated Optical Inspection (AOI) systems when identifying defects.<\/span><\/p>\n<h4><b><span data-font-family=\"Arial\">What does FR-4 stand for?<\/span><\/b><\/h4>\n<p><span data-font-family=\"Arial\"><strong>A\uff1a<\/strong>FR-4 is a NEMA grade designation where &#8220;FR&#8221; stands for Flame Retardant, indicating the material&#8217;s flammability is compliant with the UL 94 V-0 standard for self-extinguishing behavior. Manufacturers engineer this composite material by impregnating woven fiberglass cloth with epoxy resin. This process creates a rigid laminate with an exceptional balance of mechanical strength and thermal stability, establishing it as the universal choice for industrial electronics.<\/span><\/p>\n<h4><b><span data-font-family=\"Arial\">What is an annular ring and why does it matter?<\/span><\/b><\/h4>\n<p><span data-font-family=\"Arial\"><strong>A\uff1a<\/strong>An annular ring is the area of copper pad remaining after a via or lead hole is drilled, serving as the essential electrical bridge between the plating and conductive traces. Drill registration errors that cause &#8220;break out&#8221; can sever connections or create high resistance. Consequently, designers must adhere to IPC-A-600 standards, ensuring minimum widths to maintain signal integrity and long-term reliability.<\/span><\/p>\n<h2><b><span data-font-family=\"Arial\">Quick Selection Guide: PCB Material &amp; Layer Count in 60 Seconds<\/span><\/b><\/h2>\n<ul>\n<li><span data-font-family=\"Arial\">General electronics, cost priority? \u2192 Standard FR-4, 2-layer for simple designs, 4-layer above 50 MHz<\/span><\/li>\n<li><span data-font-family=\"Arial\">Lead-free reflow assembly (260\u00b0C peak)? \u2192 High-Tg FR-4 (Tg &gt; 170\u00b0C) mandatory to prevent delamination<\/span><\/li>\n<li><span data-font-family=\"Arial\">Flex or wearable application? \u2192 Polyimide (Kapton) substrate; specify rolled annealed (RA) copper for dynamic flex zones<\/span><\/li>\n<li><span data-font-family=\"Arial\">RF or microwave above 1 GHz? \u2192 Rogers PTFE laminate (Dk 2.2\u20134.5, low loss tangent); standard FR-4 too lossy<\/span><\/li>\n<li><span data-font-family=\"Arial\">High power density or LED lighting? \u2192 Metal-core PCB (MCPCB) for direct thermal conduction to heatsink<\/span><\/li>\n<li><span data-font-family=\"Arial\">Mixed analogue\/digital design above 50 MHz? \u2192 4-layer minimum: Signal \/ GND Plane \/ Power Plane \/ Signal<\/span><\/li>\n<li><span data-font-family=\"Arial\">BGA or fine-pitch QFN (&lt; 0.5 mm pitch)? \u2192 4+ layer with ENIG surface finish; HASL surface is too uneven for fine pitch<\/span><\/li>\n<\/ul>\n<h2><b><span data-font-family=\"Arial\">Conclusion<\/span><\/b><\/h2>\n<p><span data-font-family=\"Arial\">A circuit board is a precisely engineered platform where material science, electrical engineering, and manufacturing process converge. Understanding what a PCB is, how it is structured, what components populate it, and how material choices affect performance gives you the foundation to approach any electronics project with confidence.<\/span><\/p>\n<h4><b><span data-font-family=\"Arial\">Find What You Need on <a href=\"http:\/\/lcsc.com\">LCSC<\/a><\/span><\/b><\/h4>\n<p><span data-font-family=\"Arial\">Explore LCSC&#8217;s extensive component library to find resistors, capacitors, ICs, connectors, and every other PCB component you need \u2014 with datasheets, 3D models, and competitive pricing.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>TL;DR: A PCB (Printed Circuit Board) mechanically supports and electrically connects electronic components using copper traces etched onto a non-conductive fibreglass substrate. PCBs range from simple single-layer boards to complex multilayer designs with 20+ copper layers. Material choice, layer count, and surface finish determine performance, cost, and manufacturing compatibility. Key Takeaways A PCB mechanically supports [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[176,175],"tags":[302,12,181,155],"class_list":["post-3917","post","type-post","status-publish","format-standard","hentry","category-pcb-smt-basics","category-pcb-smt","tag-circuit-board","tag-lcsc","tag-pcb","tag-pcba"],"blocksy_meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>A Beginner\u2019s Guide to Circuit Board, Components &amp; Materials Blog | LCSC Electronics<\/title>\n<meta name=\"description\" content=\"LCSC PCB basics: what it is, how it works, what components it contains, and how FR-4, multilayer, and HDI materials differ.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.lcsc.com\/blog\/guide-circuit-board\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A Beginner\u2019s Guide to Circuit Board, Components &amp; 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