{"id":2678,"date":"2026-10-21T17:00:00","date_gmt":"2026-10-21T09:00:00","guid":{"rendered":"https:\/\/www.jingpengpcb.com\/?p=2678"},"modified":"2026-10-08T20:15:04","modified_gmt":"2026-10-08T12:15:04","slug":"pcb-installation-requirements","status":"publish","type":"post","link":"https:\/\/www.jingpengpcb.com\/en\/blog\/pcb-installation-requirements\/","title":{"rendered":"Installation Requirements for Printed Circuit Boards (PCBs)"},"content":{"rendered":"<style>\n.jp-tw{overflow-x:auto;margin:26px 0;-webkit-overflow-scrolling:touch;}\n.jp-tw table{border-collapse:collapse;width:100%;min-width:560px;font-size:15px;line-height:1.65;background:#fff;}\n.jp-tw th,.jp-tw td{border:1px solid #dde3ea;padding:11px 14px;text-align:left;vertical-align:top;}\n.jp-tw thead th{background:#eef2f7;color:#1b2733;font-weight:700;white-space:nowrap;border-bottom:2px solid #c9d3de;}\n.jp-tw tbody tr:nth-child(even){background:#fafbfc;}\n.jp-tw tbody tr:hover{background:#f1f5fa;}\n.jp-tw tbody td:first-child{font-weight:600;color:#1b2733;}\n@media(max-width:767px){.jp-tw table{font-size:14px;min-width:520px;}.jp-tw th,.jp-tw td{padding:9px 11px;}}\n<\/style>\n<p>PCBs (Printed Circuit Boards) are an indispensable part of modern electronic devices. To ensure the proper operation of these circuit boards, it is necessary to understand their installation requirements as well as mechanical and electrical considerations. This article will take an in-depth look at the installation requirements and related considerations for PCBs.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"799\" height=\"604\" class=\"alignnone size-large wp-image-5699\" src=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/07\/china-printed-board-standards.webp\" alt=\"Printed Circuit Board Standards and Specifications\" srcset=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/07\/china-printed-board-standards.webp 799w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/07\/china-printed-board-standards-300x227.webp 300w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/07\/china-printed-board-standards-768x581.webp 768w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/07\/china-printed-board-standards-400x302.webp 400w\" sizes=\"auto, (max-width: 799px) 100vw, 799px\" \/><\/p>\n<h2>Support Requirements for Printed Circuit Boards (PCBs)<\/h2>\n<p>When installing printed circuit boards (PCBs), it is essential to ensure they are adequately supported to prevent potential mechanical damage or resonance. The following are key considerations regarding support requirements:<\/p>\n<h3>1. Spacing between support points<\/h3>\n<p>The spacing between support points directly affects the stability of a printed circuit board. Generally, when the thickness of a printed circuit board is between 0.031 and 0.062 inches, the spacing between support points should be at least 4 inches. For printed circuit boards thicker than 0.093 inches, the spacing between support points should be at least 5 inches. Ensuring appropriate spacing between support points improves the rigidity of the printed circuit board and reduces the risk of vibration and resonance.<\/p>\n<h3>2. Selection of Installation Techniques<\/h3>\n<p>Selecting the appropriate mounting technique depends on several factors, including the size and shape of the printed circuit board, the number of input and output terminals, available installation space, ease of installation and removal, the type of accessories, thermal management requirements, shielding requirements, and interactions with other circuits. When determining the optimal mounting technique, all of these factors must be taken into comprehensive consideration to ensure the safety and performance of the printed circuit board.<\/p>\n<h2>Advanced: Why Is the Support Spacing Related to the Plate Thickness?<\/h2>\n<p>The reason the spacing between support points is tied to the plate thickness is essentially to<strong>Deflection of the Control Panel Under Its Own Weight and Vibration<\/strong>. The thinner the plate, the lower its stiffness; for the same span, the greater the deflection, so thin plates require more frequent support.<\/p>\n<ul>\n<li><strong>Sheet thickness: 0.031\u20130.062 inches (approx. 0.8\u20131.6 mm)<\/strong>: The spacing between support points must be at least 4 inches (approximately 100 mm);<\/li>\n<li><strong>Sheet thickness greater than 0.093 inches (approximately 2.4 mm)<\/strong>: The spacing between support points must be at least 5 inches (approximately 127 mm);<\/li>\n<li><strong>The components are relatively heavy or the board has a large span<\/strong>: Additional supports should be added beneath heavy components or in the center of the board; do not rely solely on the edges for securing them;<\/li>\n<li><strong>Requirements for vibration or shock<\/strong>: Further increase the density of support points, or add reinforcing ribs or metal brackets.<\/li>\n<\/ul>\n<p>Common mounting methods each have their own suitable applications; when selecting one, you must balance rigidity, heat dissipation, maintainability, and assembly efficiency:<\/p>\n<div class=\"jp-tw\">\n<table>\n<thead>\n<tr>\n<th>Mounting Method<\/th>\n<th>Advantages<\/th>\n<th>Points to Note<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Screws + Support Posts<\/td>\n<td>High rigidity, detachable<\/td>\n<td>Hole placements must avoid traces; pay attention to the creepage distance.<\/td>\n<\/tr>\n<tr>\n<td>Guide Rails \/ Slots<\/td>\n<td>Easy to insert and remove, with precise positioning<\/td>\n<td>Sensitive to sheet thickness tolerances<\/td>\n<\/tr>\n<tr>\n<td>Clips \/ Plastic Supports<\/td>\n<td>Low cost, quick assembly<\/td>\n<td>Limited vibration resistance and heat resistance<\/td>\n<\/tr>\n<tr>\n<td>Adhesives \/ Thermal Conductive Adhesives<\/td>\n<td>Ideal for situations where there is no dedicated space<\/td>\n<td>Difficulties with Repairs<\/td>\n<\/tr>\n<tr>\n<td>Crimping \/ Riveting<\/td>\n<td>Reliable Connection<\/td>\n<td>Cannot be disassembled; requires special tools<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"719\" class=\"alignnone size-large wp-image-8629\" src=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/pcb-assembly-testing.jpg\" alt=\"Why Is PCB Assembly and Testing Necessary?\" srcset=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/pcb-assembly-testing.jpg 1280w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/pcb-assembly-testing-300x169.jpg 300w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/pcb-assembly-testing-1024x575.jpg 1024w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/pcb-assembly-testing-768x431.jpg 768w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p>For key points regarding the verification of the completed board, please refer to<a href=\"\/en\/blog\/pcb-assembly-testing\/\">Why Is PCB Assembly and Testing Necessary?<\/a>\u3002<\/p>\n<h2>Requirements for Removing PCBs (Printed Circuit Boards)<\/h2>\n<p>On a PCB (printed circuit board), a \"cutout\" refers to an area where no components are to be mounted. When considering cutouts, the following factors should be taken into account:<\/p>\n<h3>1. Preparing the Mounting Holes and Slots<\/h3>\n<p>In PCB design, mounting holes and slots must be specifically provided to accommodate removal tools and equipment.<\/p>\n<h3>2. Dimensions and Securing of Insertion and Removal Tools<\/h3>\n<p>Insertion and removal tools are key components used to perform removal operations on printed circuit boards. They should fit properly and be permanently secured to the printed circuit board assembly, typically using rivets.<\/p>\n<h3>3. Special Design for Rack Installation<\/h3>\n<p>In the mounting frames for printed circuit boards, special designs\u2014such as load-bearing flanges\u2014may be required to ensure that the removal process proceeds smoothly.<\/p>\n<h3>4. Adaptability to the size, shape, and thickness of printed circuit boards<\/h3>\n<p>When selecting a punching tool, it is essential to consider its compatibility with the size, shape, and thickness of the printed circuit board to ensure effective punching operations.<\/p>\n<h2>Advanced: Design Considerations for Mounting Holes, Connectors, and Insertion\/Extraction Forces<\/h2>\n<p>Mounting holes and related plug-and-play structures are the areas where problems are most likely to surface only during mass production:<\/p>\n<ul>\n<li><strong>Mounting Holes and Non-Metallized Areas<\/strong>: Leave a sufficient copper-free zone around the hole to prevent the screw head from coming into contact with the copper foil, which could cause a short circuit or result in an insufficient creepage distance;<\/li>\n<li><strong>Hole Placement and Trace Routing Avoidance<\/strong>: Since the actual contact diameter of the screw head or washer is larger than the hole diameter, when routing wires, allow for clearance by expanding the path outward from the contact area;<\/li>\n<li><strong>Insertion and Removal Force and Cycle Count<\/strong>: The board near the connector must be adequately supported; otherwise, repeated insertion and removal may cause the board to bend and the solder joints to crack due to fatigue;<\/li>\n<li><strong>Guidance and Error-Proofing<\/strong>: Structural components should incorporate guiding and error-proofing features to prevent damage to the panels caused by forced alignment during assembly;<\/li>\n<li><strong>Tool Working Space<\/strong>: Space must be left for the movement of the insertion and removal tool so that it does not interfere with tall components.<\/li>\n<\/ul>\n<p>These questions have one thing in common:<strong>When viewed individually, the design documents are all correct, but problems arise only when they are installed in the finished unit.<\/strong>. Therefore, the PCB\u2019s support structure, insertion and removal paths, and tooling space should be reviewed together during the structural design phase, rather than waiting until the prototype is ready to make changes.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"450\" class=\"alignnone size-large wp-image-804\" src=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/06\/pcb-assembly-service.webp\" alt=\"PCB Assembly Services\" srcset=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/06\/pcb-assembly-service.webp 800w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/06\/pcb-assembly-service-300x169.webp 300w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/06\/pcb-assembly-service-768x432.webp 768w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/06\/pcb-assembly-service-400x225.webp 400w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>The panel layout also affects the dimensional tolerances and edge quality after panel separation; please refer to<a href=\"\/en\/blog\/five-pcb-circuit-board-assembly-methods\/\">PCB Panelization Methods<\/a>The approach to making choices in an article.<\/p>\n<h2>Considerations Regarding PCB Machinery<\/h2>\n<p>The mechanical properties of printed circuit boards (PCBs) have a significant impact on their performance and production efficiency. The following are some key mechanical considerations:<\/p>\n<h3>1. Substrate Properties<\/h3>\n<p>Substrate properties include water absorption, coefficient of thermal expansion, heat resistance, flexural strength, impact strength, tensile strength, and hardness, among others. These properties affect not only the structural and functional characteristics of printed circuit boards but also production efficiency.<\/p>\n<h3>2. Media Backing<\/h3>\n<p>The substrate materials for PCBs (printed circuit boards) are typically phenolic-impregnated paper, acrylic-polyester-impregnated randomly oriented glass mat, epoxy-impregnated paper, or epoxy-impregnated glass cloth. Each type of substrate can be either flame-retardant or combustible; the specific choice depends on the application requirements.<\/p>\n<h2>Advanced: How to Interpret the Mechanical and Thermal Properties of Substrates<\/h2>\n<p>The parameters of the substrate determine the types of installation and usage environments the panel can withstand. The following items are most frequently asked about during structural design:<\/p>\n<div class=\"jp-tw\">\n<table>\n<thead>\n<tr>\n<th>Parameters<\/th>\n<th>Significance<\/th>\n<th>Impact of the Project<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Water Absorbency<\/td>\n<td>Dimensional and Electrical Changes After Moisture Absorption<\/td>\n<td>Insulation performance decreases in high-humidity environments, posing a risk of circuit board failure<\/td>\n<\/tr>\n<tr>\n<td>CTE (Coefficient of Thermal Expansion)<\/td>\n<td>Dimensional Changes Due to Temperature Variations<\/td>\n<td>Matching between components and holes affects solder joint fatigue<\/td>\n<\/tr>\n<tr>\n<td>Tg \/ Td<\/td>\n<td>Glass Transition and Decomposition Temperatures<\/td>\n<td>Determining the Upper Heat Resistance Limit and Suitability for Lead-Free Processes<\/td>\n<\/tr>\n<tr>\n<td>Flexural Strength<\/td>\n<td>Resistance to bending<\/td>\n<td>Factors that Directly Affect the Selection of Support Spacing<\/td>\n<\/tr>\n<tr>\n<td>Impact Strength<\/td>\n<td>Resistance to Transient Impacts<\/td>\n<td>Transportation, Drop Tests, and Reliability in Industrial Environments<\/td>\n<\/tr>\n<tr>\n<td>Peel Strength<\/td>\n<td>Adhesion Between Copper Foil and the Substrate<\/td>\n<td>Factors Affecting Welding and the Number of Repairs<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>The decision on whether to use a medium backing can be summarized as follows:<\/p>\n<ul>\n<li><strong>Phenolic-impregnated paper<\/strong>: It has the lowest cost, but its heat resistance and electrical properties are average; it is mostly used in simple, low-frequency consumer products;<\/li>\n<li><strong>Epoxy Glass Cloth (FR-4)<\/strong>: It offers the most balanced overall performance and is the most widely used, making it the default choice for the vast majority of scenarios;<\/li>\n<li><strong>Polyester Glass Felt \/ Epoxy-Impregnated Paper<\/strong>: Can be used in specific low-frequency or cost-sensitive scenarios; consistency and supply must be taken into account;<\/li>\n<li><strong>Flame Retardancy Rating<\/strong>: Consumer and industrial products typically require UL94 V-0 compliance, which should be explicitly specified in the sheet material model number, rather than simply listed as \u201cflame-retardant.\u201d<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" class=\"alignnone size-large wp-image-6137\" src=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/07\/china-IPC-standard.jpg\" alt=\"Printed Circuit Board Standards\" srcset=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/07\/china-IPC-standard.jpg 1280w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/07\/china-IPC-standard-300x169.jpg 300w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/07\/china-IPC-standard-1024x576.jpg 1024w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/07\/china-IPC-standard-768x432.jpg 768w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/07\/china-IPC-standard-400x225.jpg 400w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p>The relevant provisions are available for review<a href=\"\/en\/blog\/34-commonly-used-ipc-standards-for-printed-circuit-boards\/\">34 Common IPC Standards for Printed Circuit Boards<\/a>, see [link] for details on material selection<a href=\"\/en\/capabilities\/pcb-materials\/\">PCB Materials<\/a>\u3002<\/p>\n<h2>Electrical Considerations for PCBs<\/h2>\n<p>The electrical characteristics of a PCB (printed circuit board) are critical to its functionality. Here are some electrical considerations:<\/p>\n<h3>1. Insulation Properties<\/h3>\n<p>Insulation properties include insulation resistance, arc resistance, the resistance of printed conductors, and breakdown strength. These properties play a crucial role in various applications.<\/p>\n<h3>2. Current-Carrying Capacity<\/h3>\n<p>The current-carrying capacity of printed conductors is very important, especially in DC or low-frequency AC applications.<\/p>\n<h2>Advanced: How to Determine Current-Carrying Capacity and Clearance Values<\/h2>\n<p>How much current a wire can carry and how far apart two wires should be are two parameters that are most often decided on a whim, but there are established calculation methods for both:<\/p>\n<ul>\n<li><strong>Current-carrying capacity<\/strong>: This is determined by the cross-sectional area of the conductor (copper thickness \u00d7 trace width), the allowable temperature rise, and whether the trace is on the top layer. Under conditions of 1 oz copper thickness and a temperature rise of 10\u00b0C, a 10-mil trace width can generally carry a current of approximately 1 A; actual values should be verified using standard charts or simulation results;<\/li>\n<li><strong>Wire Spacing<\/strong>: This depends on the operating voltage and the environmental pollution level; the higher the voltage and the higher the pollution level, the greater the required creepage distance;<\/li>\n<li><strong>Cable Routing Paths<\/strong>: Take the shortest path whenever possible; limit the length of parallel segments to control coupling; avoid sharp corners and abrupt turns;<\/li>\n<li><strong>The Effects of Sharp Corners<\/strong>: Right angles or acute angles can cause sudden changes in impedance and radiation at high frequencies, and they also tend to trap etching solution during the etching process. It is recommended to use 45\u00b0 angles or rounded transitions.<\/li>\n<\/ul>\n<div class=\"jp-tw\">\n<table>\n<thead>\n<tr>\n<th>Scene<\/th>\n<th>Recommended Approach<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Low-Voltage Signal Cable<\/td>\n<td>Select the minimum spacing based on the panel factory's capacity, and allow for sufficient margin.<\/td>\n<\/tr>\n<tr>\n<td>Mains Power and High-Voltage Zone<\/td>\n<td>Determine the creepage distance in accordance with safety regulations; if necessary, install an isolation channel.<\/td>\n<\/tr>\n<tr>\n<td>High-Current Tracing<\/td>\n<td>Widening trace widths, adding solder or copper strips to solder mask openings<\/td>\n<\/tr>\n<tr>\n<td>High-Speed Differential Pairs<\/td>\n<td>Equal length and equal spacing, ensuring the integrity of the reference plane<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" class=\"alignnone size-large wp-image-6382\" src=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/07\/five-pcb-circuit-board-assembly-methods.jpg\" alt=\"PCB Panelization Methods\" srcset=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/07\/five-pcb-circuit-board-assembly-methods.jpg 1280w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/07\/five-pcb-circuit-board-assembly-methods-300x169.jpg 300w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/07\/five-pcb-circuit-board-assembly-methods-1024x576.jpg 1024w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/07\/five-pcb-circuit-board-assembly-methods-768x432.jpg 768w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p>For general rules regarding spacing, see also<a href=\"\/en\/blog\/pcb-spacing\/\">Electrical Safety Clearances<\/a>For information on the effects of sheet material and lamination, please refer to<a href=\"\/en\/blog\/multilayer-board-substrate-materials-and-semi-cured-sheets\/\">An Introduction to Multilayer Board Substrate Materials and Pre-pregs<\/a>\u3002<\/p>\n<h2>PCB Tracing Routes and Trace Spacing<\/h2>\n<p>Trace routing and trace spacing directly affect the performance of a PCB. A good design should use the shortest possible paths, limit coupling between parallel traces, and avoid sharp corners and abrupt bends.<\/p>\n<h2>Advanced: Six Pre-Assembly Inspections<\/h2>\n<p>Making the following inspections part of your routine process can prevent most rework during the assembly phase:<\/p>\n<ol>\n<li><strong>Dimensions and Hole Locations<\/strong>: Check the positions and diameters of the mounting holes, as well as the plate thickness tolerances, to ensure a proper fit with the structural components;<\/li>\n<li><strong>Flatness<\/strong>: Verify that the warpage is within the allowable range to avoid generating additional stress during assembly;<\/li>\n<li><strong>Support and Securing<\/strong>: Verify that the number and locations of the support points comply with the design specifications and that the screw torque does not exceed the specified limits;<\/li>\n<li><strong>Electrical Clearance<\/strong>: Check whether the distance between the high-voltage area and the metal structural components meets the required standards;<\/li>\n<li><strong>Plug-and-Play Verification<\/strong>: Conduct insertion and removal tests based on the actual number of uses, and inspect the solder joints and circuit boards for any damage;<\/li>\n<li><strong>Vibration and Temperature Cycling<\/strong>: Conduct a simplified reliability validation when conditions permit; this is particularly necessary for automotive and industrial products.<\/li>\n<\/ol>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"543\" height=\"230\" class=\"alignnone size-large wp-image-92\" src=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2022\/11\/index-servie-pcb-assembly.jpg\" alt=\"One-Stop PCB+PCBA Services\" srcset=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2022\/11\/index-servie-pcb-assembly.jpg 543w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2022\/11\/index-servie-pcb-assembly-300x127.jpg 300w\" sizes=\"auto, (max-width: 543px) 100vw, 543px\" \/><\/p>\n<p>If you discover an issue only after the unit has been installed in the system, you can trace the cause by referring to the following three typical symptoms:<\/p>\n<ul>\n<li><strong>After assembly, the center of the board is noticeably sunken.<\/strong>: This is most likely due to insufficient support points or an excessive span; additional supports or thicker panels are needed;<\/li>\n<li><strong>The solder joints on the connector cracked after being plugged in and unplugged several times.<\/strong>: There is a lack of support near the connector, so the insertion and extraction forces are transmitted directly to the solder joints;<\/li>\n<li><strong>Whitening or delamination around the hole after the screw is tightened<\/strong>: If the torque is too high or there is insufficient copper-free zone around the hole, reduce the torque and adjust the hole placement.<\/li>\n<\/ul>\n<p>If you need the PCB manufacturer to handle both component placement and assembly, please refer to<a href=\"\/en\/blog\/commonly-used-standards-for-printed-circuit-boards\/\">A Comprehensive Overview of Common Printed Circuit Board Standards<\/a>Include acceptance criteria by incorporating the standard provisions directly into the purchase specifications.<\/p>\n<h2>Conclusion<\/h2>\n<p>The installation requirements and mechanical and electrical considerations for printed circuit boards (PCBs) are crucial to ensuring their proper operation and stable performance. Designing and selecting appropriate mounting methods, insertion tools, substrate materials, and trace layouts are all critical steps. By carefully considering these factors, PCBs can be ensured to perform exceptionally well in a wide range of applications.<\/p>\n<h2>Frequently Asked Questions<\/h2>\n<h3>1. How should the spacing between support points on a PCB be determined?<\/h3>\n<p>The spacing between support points depends on the thickness of the printed circuit board. Generally, for printed circuit boards with a thickness between 0.031 and 0.062 inches, the spacing between support points should be at least 4 inches.<\/p>\n<h3>2. What is the removal of a PCB (printed circuit board)?<\/h3>\n<p>On a PCB (printed circuit board), a \"cutout\" refers to an area where no components are to be mounted; special tools are typically required to perform the cutout operation.<\/p>\n<h3>3. What are the different types of dielectric substrates used in printed circuit boards (PCBs)?<\/h3>\n<p>The substrate materials used in printed circuit boards (PCBs) include phenolic-impregnated paper, acrylic-polyester-impregnated randomly oriented glass mat, epoxy-impregnated paper, and epoxy-impregnated glass cloth, among others.<\/p>\n<h3>4. What are the electrical considerations for PCBs (printed circuit boards)?<\/h3>\n<p>Electrical considerations include insulation properties, current-carrying capacity, as well as wiring routes and conductor spacing.<\/p>\n<h3>5. Why are routing paths and trace spacing important on PCBs?<\/h3>\n<p>Trace routing and trace spacing directly affect PCB printing.<\/p>\n<h3>6. Can the spacing between support points be increased based on experience?<\/h3>\n<p>This is not recommended. Spacing is essentially a matter of deflection and resonant frequency; increasing the spacing may lead to resonance or long-term sagging. If it is truly necessary to reduce the number of support points, this should be compensated for by thickening the plate, adding stiffeners, or changing the fastening method, rather than simply increasing the spacing.<\/p>\n<h3>7. Why is it necessary to leave a copper-free zone around the mounting holes?<\/h3>\n<p>Screw heads and washers are metallic conductors; if pressed against the copper foil, they may cause a short circuit or result in an insufficient creepage distance between the high-voltage area and the metal structural components. Leaving a sufficient copper-free zone is the most direct and reliable approach.<\/p>\n<h3>8. How should I choose the plate thickness?<\/h3>\n<p>Common examples include <strong>1.6 mm<\/strong>...It offers the best balance between strength, cost, and connector compatibility. The 0.8 mm and 1.0 mm options are suitable for small boards with limited space, but require correspondingly denser support; options of 2.0 mm or greater are used in applications requiring rigidity or thick copper.<\/p>\n<h3>9. What is the appropriate torque for tightening screws?<\/h3>\n<p>There is no standard value; it depends on the screw specifications, panel thickness, and the material of the support columns. The general principle is to secure the panel firmly without causing visible deformation or whitening around the holes. It is recommended to follow the torque specifications provided in the structural component manual and use a torque screwdriver to ensure proper tightening.<\/p>\n<h3>10. Is the wire spacing determined solely by the operating voltage?<\/h3>\n<p>That's not all. We'll have to see.<strong>Contamination level, elevation, coating, and whether it is a safety isolation<\/strong>. At the same voltage, the required creepage distance is significantly greater in environments with conductive dust or high humidity; in safety-related applications, the values should be determined directly in accordance with the standard requirements.<\/p>\n<p><strong>Related Recommendations<\/strong>\uff1a<a href=\"\/en\/blog\/34-commonly-used-ipc-standards-for-printed-circuit-boards\/\">34 Common IPC Standards for Printed Circuit Boards<\/a> \u00b7 <a href=\"\/en\/blog\/commonly-used-standards-for-printed-circuit-boards\/\">A Comprehensive Overview of Common Printed Circuit Board Standards<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>PCB\uff08Printed Circuit Board\uff0c\u5370\u5236\u7535\u8def\u677f\uff09\u662f\u73b0\u4ee3\u7535\u5b50\u8bbe\u5907\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u4e3a\u4e86\u786e\u4fdd\u8fd9\u4e9b [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":5699,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"slim_seo":{"title":"PCB Installation Requirements - Jingpeng Electronics","description":"What are the requirements for PCB installation? This article explains the spacing between support points, the selection of installation techniques, insertion and removal requirements, and the preparation of mounting holes and slots. It provides ready-to-use values and key operational points."},"_slim_seo_primary_term_category":0,"_slim_seo_primary_term_post_tag":0,"footnotes":""},"categories":[405,26],"tags":[],"class_list":["post-2678","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pcb-design","category-blog"],"_links":{"self":[{"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/posts\/2678","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/comments?post=2678"}],"version-history":[{"count":4,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/posts\/2678\/revisions"}],"predecessor-version":[{"id":19946,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/posts\/2678\/revisions\/19946"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/media\/5699"}],"wp:attachment":[{"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/media?parent=2678"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/categories?post=2678"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/tags?post=2678"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}