# Flexible PCB Design Guide: Materials, Layout, and Applications Learn how to design flexible PCBs including materials, layout rules, and applications for modern electronics. Written by [Gabriel Hacohen](#) Published Jun 2026 - 7 min read [![A guide to flexible PCB design covering materials, layout rules, and applications for modern electronics](https://www.flux.ai/p/assets/blogs/flex-pcb-design-guide/main.webp)](#) Hardware development often pushes the physical limits of packaging. When standard rigid boards cannot fit into a curved enclosure or fold around a battery, engineers turn to **flex PCB design**. Designing a flexible circuit requires a shift in thinking; you must account for mechanical stress alongside electrical performance. This guide covers the materials, routing rules, and [manufacturing constraints](https://www.flux.ai/p/blog/pcb-design-for-manufacturability-dfm) necessary to build reliable flexible electronics. ### Key Takeaways - [Mechanical stress dictates electrical layout:](#flex-pcb-layout-best-practices-and-common-pitfalls) Traces must be routed to survive bending without cracking the copper. - [Materials differ from rigid boards:](#flexible-pcb-materials-and-stackups) Flexible circuits use polyimide and rolled-annealed copper instead of FR4 and electro-deposited copper. - [Bend radius is a strict limit:](#managing-the-bend-radius) Exceeding the minimum bend radius causes immediate mechanical failure. - [Flexible PCB solves complex packaging challenges:](#applications-of-flexible-pcbs) By replacing bulky wires and connectors with integrated traces, a flexible PCB enables smaller designs and better vibration resistance. ## What Is a Flexible PCB? A flexible printed circuit consists of a thin, bendable polymer base with conductive copper traces. Unlike traditional rigid boards made of thick fiberglass, a **flex PCB** can fold, twist, and conform to the shape of an enclosure. This technology is the foundation of **flexible electronics design**, allowing circuits to act as their own wiring harnesses. ### Benefits of Flexible PCB Design - **Compact Form Factors:** Replaces bulky wire harnesses and ribbon cables, saving weight and volume inside the enclosure. - **Reduced Connectors:** Connectors are frequent failure points. A **rigid flex PCB** eliminates board-to-board connectors by integrating flexible cables directly into rigid sections of a PCB. - **Improved Reliability:** Fewer solder joints and connectors mean fewer points of mechanical failure, particularly in high-vibration environments. ## Flexible PCB Materials and Stackups Selecting the right **flex PCB materials** is critical. You cannot use standard rigid board materials if the circuit needs to bend. ### Core Material Differences For Rigid PCBs vs Flex PCBs | Component | Rigid PCB | Flex PCB | Engineering Reason | | --- | --- | --- | --- | | **Base Substrate** | FR4 (Fiberglass/Epoxy) | Polyimide (PI) | Polyimide bends without snapping and withstands high reflow soldering temperatures. | | **Copper Type** | Electro-Deposited (ED) | Rolled-Annealed (RA) | RA copper grains are horizontally oriented, preventing cracking under mechanical stress. | | **Outer Protection** | Liquid Solder Mask | Polyimide Coverlay | Standard solder mask cracks when bent; a polyimide coverlay remains flexible. | Flexible boards use Rolled-Annealed (RA) copper instead of Electro-Deposited (ED) copper. Instead of brittle liquid solder mask, flexible boards use a "coverlay", a solid sheet of polyimide bonded with adhesive to protect the external traces. ## Flex PCB Layout Best Practices and Common Pitfalls Designing a **flex circuit layout** requires prioritizing mechanical physics just as much as electrical connectivity. What works on a rigid board will often cause a flexible circuit to fail. ### Managing the Bend Radius The **bend radius PCB** constraint dictates exactly how tightly the board can fold before the copper stretches and fractures. You must distinguish between a static board (bent once during assembly to fit an enclosure) and a **dynamic flex PCB** (bent continuously during operation, like in a laptop hinge or robotic arm). A common rule of thumb is a minimum bend radius of 10 times the total material thickness for static bends, and up to 100 times the thickness for dynamic applications. ### Trace Routing and Geometry - Route traces perpendicular (90 degrees) to the bend line whenever possible. This minimizes copper stress during bending and improves long-term reliability. - Add teardrops at pad connections to strengthen the transition between the trace and solder joint. - **Avoid Sharp Corners:** While traces should cross the bend line at 90 degrees, the traces themselves should not contain sharp 90-degree bends. Use smooth curves or arcs in flexible regions to reduce stress concentration and prevent copper fatigue or cracking. - **The "I-Beam" Effect:** Never route a top-layer trace directly over a bottom-layer trace. This creates a stiff, localized "I-beam" structure within the polyimide that resists bending and drastically increases the risk of delamination. Instead, stagger traces on adjacent layers. ### Vias and Ground Planes - **Mistake to Avoid (Vias in Bend Zones):** Never place a via in a region of the board that is intended to fold or bend. Vias are rigid barrels of plated copper. The mechanical stress of a bend will cause the plating inside the via to crack, resulting in an intermittent or open circuit. - **Best Practice:** Use hatched polygons (cross-hatching) for ground planes instead of solid copper pours. Solid copper is too rigid; hatched copper maintains electrical shielding while retaining the board's flexibility. ### Layout Checklist - Route traces at a 90-degree angle to the bend line. - Stagger traces on adjacent layers to prevent the "I-beam" effect. - Apply teardrops to all vias and pads. - Use hatched copper for reference planes. - Ensure absolutely zero vias or components are located within the bend radius zone. ## Applications of Flexible PCBs Because of their unique ability to combine spatial efficiency with extreme durability, flexible circuits are the backbone of several high-growth engineering sectors. ### Wearables and Consumer Electronics In devices that must conform to the human body, such as smartwatches, fitness trackers, and AR/VR headsets, internal volume is non-existent. Flex circuits can be designed to wrap tightly around curved batteries and circular displays. They are also heavily utilized in smartphones to connect camera modules and displays to the main motherboard, surviving the tight folds required in modern ultra-thin chassis designs. ### Medical Devices The medical sector relies on flex PCBs for two reasons: extreme miniaturization and biocompatibility (polyimide is chemically stable). Hearing aids, pacemakers, and implantable sensors use flex circuits to fit within the human body. Furthermore, diagnostic tools like endoscopes use long, flexible printed cables to route high-definition camera signals and power through narrow, twisting catheters without signal degradation. ### Aerospace and Defense In aviation and space exploration, engineers are obsessed with SWaP (Size, Weight, and Power). Replacing thick, bulky copper wire harnesses with lightweight **rigid flex PCB** designs can shave pounds off a satellite or fighter jet, directly translating to fuel savings and increased payload capacity. Additionally, because the "wiring" is etched directly into the board, flexible circuits are virtually immune to the heavy vibration during launch that typically causes standard wire connectors to shake loose. ### Automotive Systems Modern vehicles are essentially rolling data centers. Flex circuits are used to route signals through tight, mechanically demanding spaces, such as inside the steering column, behind infotainment dashboards, and within advanced driver-assistance systems (ADAS) cameras. They are also increasingly used in Electric Vehicle (EV) battery management systems to monitor individual cells across complex, varied battery pack geometries. ## How Modern PCB Tools Support Flexible PCB Design Designing flexible circuits using legacy desktop software often requires manual workarounds to bypass rigid board rules. Modern platforms like Flux provide specific tools for non-planar geometries. By setting custom design rules for flexible regions, Flux's [real-time Design Rule Check](https://docs.flux.ai/reference/design-rule-check--drc-) alerts you if a trace violates a bend radius limit or if a via is placed too close to a fold line. This real-time validation prevents unmanufacturable designs from reaching the fabrication house. Furthermore, browser-based collaboration allows mechanical and electrical engineers to review the board folding logic together in real-time, reducing physical prototype costs. Move beyond rigid, error-prone workflows and start designing flexible PCBs in [Flux](https://www.flux.ai/p) today and validate bend constraints in real time as you build. ## FAQs ### What is the difference between a static and dynamic flex PCB? A static flex board is bent once during product assembly and remains in that shape. A dynamic flex PCB is designed to bend continuously during its operation, requiring stricter rules and larger bend radii. ### Can I use standard copper on a flex board? Standard electro-deposited (ED) copper is too brittle for repeated bending. Rolled-annealed (RA) copper is required for flexible designs. ### What is a rigid flex PCB? A rigid flex PCB combines rigid FR4 sections and flexible polyimide sections into a single laminated structure, eliminating the need for external connectors between boards. ### Can I put components on the flexible part of the board? Yes, but you must place a stiffener (a piece of FR4 or extra polyimide) under the component area to prevent the solder joints from cracking when the board bends. ## About the author Gabriel Hacohen Electronics Engineer at Flux Gabriel Hacohen is an electrical engineer with deep expertise in analog circuitry, medical devices, high-performance computing, and semiconductors. 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The meticulous examination of the electrical connections signifies the critical nature of ensuring proper voltage levels and avoiding voltage drop, which can lead to reduced efficiency and potential damage to electrical components.](https://www.flux.ai/p/assets/blogs/voltage-drop/main.webp) ### Voltage Drop Calculations: Formulas, Factors, and Guidelines 5 Min Read](https://www.flux.ai/p/blog/importance-of-voltage-drop-calculations)[ ![An array of AC to DC converter circuit boards featuring components like transformers, bridge rectifiers, and capacitors to facilitate the conversion of alternating current to direct current.](https://www.flux.ai/p/assets/blogs/ac-to-dc-converters/main.webp) ### AC to DC Converter: The Backbone of Power Electronics 4 Min Read](https://www.flux.ai/p/blog/ac-to-dc-converter-the-backbone-of-power-electronics)[ ![AC-to-DC Converters: How They Work, Types, and Design Tips](https://www.flux.ai/p/assets/blogs/hatter/ac-dc-converter/main.webp) ### AC-to-DC Converters: How They Work, Types, and Design Tips 5 Min Read](https://www.flux.ai/p/blog/what-is-an-ac-to-dc-converter-technical-basics-explained)[ ![Illustration for Thermal Management in PCB Design: Methods and Best Practices](https://www.flux.ai/p/assets/blogs/pcb-thermal-management/main.webp) ### Thermal Management in PCB Design: Methods and Best Practices 10 Min Read](https://www.flux.ai/p/blog/pcb-thermal-management)[ ![PCB Thermal Management: Analysis and Design Best Practices](https://www.flux.ai/p/assets/blogs/pcb-thermal-analysis/main.webp) ### PCB Thermal Management: Analysis and Design Best Practices 6 Min Read](https://www.flux.ai/p/blog/achieving-efficient-heat-flow-pcb-thermal-management-best-practices)[ ![Illustration of a PPS chip symbolically powering three fast charging technologies—PPS, Power Delivery (PD), and Quick Charge (QC)—on a dark background.](https://www.flux.ai/p/assets/blogs/programmable-power-supply/main.webp) ### Understanding PPS Fast Charging: What It Is and How It Works 3 Min Read](https://www.flux.ai/p/blog/understanding-pps-fast-charging-what-it-is-and-how-it-works)[ ![Illustration for Decoupling Capacitors in PCB Design: Placement and Selection](https://www.flux.ai/p/assets/blogs/decoupling-capacitors-pcb/main.webp) ### Decoupling Capacitors in PCB Design: Placement and Selection 9 Min Read](https://www.flux.ai/p/blog/decoupling-capacitors-pcb)[ ![The image presents a graphical representation of Multilayer Ceramic Capacitors (MLCCs). On the left side of the image, there is a three-dimensional illustration of a capacitor, with a beige body and alternating white and golden layers, representing the ceramic and metal layers of the capacitor. An arrow points from this illustration to the right side of the image, where there is a cutaway view of a similar capacitor, showing multiple golden conducting layers separated by white ceramic layers, which illustrate the internal structure of the capacitor. The background is dark green, and above the illustrations, in large white and green text, the acronym "MLCCs" is spelled out, followed by the full term "MULTILAYER CERAMIC CAPACITORS" in smaller capital letters.](https://www.flux.ai/p/assets/blogs/multilayer-ceramic-capacitors/main.webp) ### What Is a Multilayer Ceramic Capacitor (MLCC)? 5 Min Read](https://www.flux.ai/p/blog/what-is-a-multilayer-ceramic-capacitor-key-features-and-applications)[ ![Cutaway diagram of a tantalum capacitor showing anode, dielectric, cathode layers, epoxy case, and leads](https://www.flux.ai/p/assets/blogs/tantalum-capacitor/main.webp) ### Tantalum Capacitors Guide: Polarity, Derating & Risks 7 Min Read](https://www.flux.ai/p/blog/tantalum-capacitor)[ ![A big text Amps vs Volts with their corresponding symbols (I and V) as background](https://www.flux.ai/p/assets/blogs/amps-vs-volts/main.webp) ### Amps vs. Volts: Key Differences and How They Work Together 4 Min Read](https://www.flux.ai/p/blog/amps-vs-volts-understanding-the-key-differences)[ ![Shunt resistor, Hall-effect, and current transformer current sensors compared.](https://www.flux.ai/p/assets/blogs/current-sensor-types/main.webp) ### Current Sensor Types: Shunt, Hall Effect, and Current Transformer Comparison 12 Min Read](https://www.flux.ai/p/blog/current-sensor-types)[ ![Never Worry About Stackups Again: Introducing the Stackup Editor](https://www.flux.ai/p/assets/blogs/stackup_editor/main.webp) ### Never Worry About Stackups Again: Introducing the Stackup Editor 3 Min Read](https://www.flux.ai/p/blog/never-worry-about-stackups-again-introducing-the-stackup-editor)[ ![Flux Stackup Editor showing a Standard 4-Layer PCB stackup with Top Copper, Mid-Layer 1, Mid-Layer 2, and Bottom Copper signal layers separated by Prepreg and Core dielectric materials, with layer thicknesses and dielectric constants configured for impedance-controlled PCB design.](https://www.flux.ai/p/assets/blogs/multilayer-pcb-design/main.webp) ### Multilayer PCB Design: Best Practices for Circuit Board Layout 8 Min Read](https://www.flux.ai/p/blog/multilayer-pcb-design-best-practices)[ ![An illustrated guide to PCB materials comparing FR4 and advanced substrates for high-performance circuit board design](https://www.flux.ai/p/assets/blogs/pcb-materials-guide/main.webp) ### How to Choose PCB Materials: FR4 vs Advanced Substrates 7 Min Read](https://www.flux.ai/p/blog/pcb-materials-guide)[ ![A detailed illustration showing the cross-section of a multilayer PCB with different via types including through-hole, blind, buried, and microvias](https://www.flux.ai/p/assets/blogs/pcb-via-types-guide/main.webp) ### Blind Vias, Buried Vias, and Microvias: A Complete Guide to PCB Via Types 12 Min Read](https://www.flux.ai/p/blog/pcb-via-types-guide)[ ![A 2d view and layout of a pcb board design showing different type of vias](https://www.flux.ai/p/assets/blogs/different-type-vias/main.webp) ### Exploring Different Types of Vias in PCB 2 Min Read](https://www.flux.ai/p/blog/exploring-different-types-of-pcb-vias)[ ![A complex PCB board with high-density interconnect (HDI) technology, featuring advanced routing on each of its copper layers.](https://www.flux.ai/p/assets/blogs/smart-micro-vias-blind-buried-vias/main.webp) ### High-Density PCBs just got easier with Smart Vias 4 Min Read](https://www.flux.ai/p/blog/high-density-pcbs-just-got-easier-with-smart-vias)[ ![A detailed illustration of a multilayer PCB cross-section showing via stitching connecting ground planes across layers](https://www.flux.ai/p/assets/blogs/via-stitching-pcb-guide/main.webp) ### How to Use Via Stitching in PCB Design 11 Min Read](https://www.flux.ai/p/blog/via-stitching-pcb-guide)[ ![An illustration of PCB design constraints showing electrical, mechanical, and manufacturing rules](https://www.flux.ai/p/assets/blogs/pcb-design-constraints/main.webp) ### PCB Design Constraints: What Engineers Need to Know 7 Min Read](https://www.flux.ai/p/blog/pcb-design-constraints)[ ![PCB constraint management showing how engineers control layout rules for routing, spacing, and impedance](https://www.flux.ai/p/assets/blogs/pcb-constraint-management/main.webp) ### PCB Constraint Management: How Engineers Control Layout Rules 6 Min Read](https://www.flux.ai/p/blog/pcb-constraint-management)[ ![Design Rule Checking (DRC) in PCB Design: Real-Time vs Batch, Rules, and Common Failures](https://www.flux.ai/p/assets/blogs/pcb-drc/main.webp) ### Design Rule Checking (DRC) in PCB Design: Real-Time vs Batch, Rules, and Common Failures 8 Min Read](https://www.flux.ai/p/blog/pcb-design-rule-checking-drc)[ ![ERC vs DRC in PCB design showing the difference between electrical rule checks and design rule checks](https://www.flux.ai/p/assets/blogs/erc-vs-drc/main.webp) ### Electrical Rule Check (ERC) vs DRC in PCB Design 7 Min Read](https://www.flux.ai/p/blog/erc-vs-drc)[ ![A guide to PCB design reviews covering schematic, layout, and DFM checks for catching errors early](https://www.flux.ai/p/assets/blogs/pcb-design-review-process/main.webp) ### PCB Design Reviews: Best Practices for Catching Errors Early 6 Min Read](https://www.flux.ai/p/blog/pcb-design-review-process)[ ![Common PCB Design Mistakes and How to Avoid Them](https://www.flux.ai/p/assets/blogs/pcb-design-mistakes/main.webp) ### Common PCB Design Mistakes and How to Avoid Them 31 Min Read](https://www.flux.ai/p/blog/pcb-design-mistakes)[ ![Image showing a stack of printed circuit boards (PCBs) with a large white 'X' over them, highlighting '5 Common Mistakes in PCB Design.' The background features intricate PCB traces in red and blue on a dark surface, with a purple gradient highlighting the title. The image emphasizes errors commonly made in PCB design, such as layout, signal integrity, and component placement.](https://www.flux.ai/p/assets/blogs/5-common-mistakes-in-pcb-design/main.webp) ### 5 Common PCB Design Mistakes and How to Avoid Them 7 Min Read](https://www.flux.ai/p/blog/5-pcb-design-mistakes-that-could-ruin-your-board)[ ![A guide to PCB silkscreen design covering labeling, readability, and common manufacturing mistakes](https://www.flux.ai/p/assets/blogs/pcb-silkscreen-design/main.webp) ### PCB Silkscreen Design: Guidelines and Common Mistakes 7 Min Read](https://www.flux.ai/p/blog/pcb-silkscreen-design)[ ![Advanced complex PCB boards using Flux's Smart Polygons](https://www.flux.ai/p/assets/blogs/smart-polygons/main.webp) ### Smart Polygons: Advanced PCB Design Just Got Easier 4 Min Read](https://www.flux.ai/p/blog/smart-polygons-advanced-pcb-design-just-got-easier)[ ![A complex printed circuit board with lots of electronic components. A 3D render of the PCB on Flux.](https://www.flux.ai/p/assets/blogs/new-3d-render/main.webp) ### Automatically Create Photorealistic PCB Renders 3 Min Read](https://www.flux.ai/p/blog/automatically-create-photorealistic-pcb-renders)[ ![A tool on Flux to measure the distance between two pads in PCB editor with a text mm to mil conversion.](https://www.flux.ai/p/assets/blogs/mm-to-mil/main.webp) ### How to Convert from MM to Mils: a Guide for Beginners 4 Min Read](https://www.flux.ai/p/blog/how-to-convert-from-mm-to-mils-a-guide-for-beginners)[ ![Illustration of a printed circuit board showing solder mask over copper traces and exposed pads.](https://www.flux.ai/p/assets/blogs/what-is-solder-mask/main.webp) ### What Is Solder Mask? Materials, Colors, and PCB Design Rules 6 Min Read](https://www.flux.ai/p/blog/what-is-solder-mask)[ ![Designing Custom PCB Outlines: Fixing DXF and SVG Import Failures](https://www.flux.ai/p/assets/blogs/import-dxf-board-outline-error/main.webp) ### Designing Custom PCB Outlines: Fixing DXF and SVG Import Failures 6 Min Read](https://www.flux.ai/p/blog/import-dxf-board-outline-error)[ ![PCB Enclosure Design: How to Design an Enclosure](https://www.flux.ai/p/assets/blogs/pcb-enclosure-design/main.webp) ### PCB Enclosure Design: How to Design an Enclosure 13 Min Read](https://www.flux.ai/p/blog/pcb-enclosure-design)[ ![A PCB layout with IPC design standards that apply to trace width, land patterns, and assembly.](https://www.flux.ai/p/assets/blogs/pcb-ipc-standards/main.webp) ### PCB IPC Standards Explained: IPC-2221, IPC-2152, IPC-7351, and More 9 Min Read](https://www.flux.ai/p/blog/pcb-ipc-standards)[ ![A guide to PCB component selection covering electrical specs, footprints, thermal performance, and sourcing best practices](https://www.flux.ai/p/assets/blogs/component-selection-pcb-design/main.webp) ### Component Selection in PCB Design: How Engineers Choose the Right Parts 7 Min Read](https://www.flux.ai/p/blog/component-selection-pcb-design)[ ![Flux Copilot’s new AI-powered part search makes finding and placing components faster and easier using natural language.](https://www.flux.ai/p/assets/blogs/smarter-part-search/main.webp) ### Smarter Part Search Just Got a Major Upgrade 6 Min Read](https://www.flux.ai/p/blog/smarter-part-search-just-got-a-major-upgrade)[ ![A detailed illustration showing PCB footprint design with pad layout, silkscreen markings, and courtyard boundaries](https://www.flux.ai/p/assets/blogs/pcb-footprint-design-guide/main.webp) ### How to Design a PCB Footprint (Step-by-Step Guide) 8 Min Read](https://www.flux.ai/p/blog/pcb-footprint-design-guide)[ ![A close-up xray of printed circuit board with its multi-layer traces featuring short circuit and over current protection.](https://www.flux.ai/p/assets/blogs/protection-circuit-101/main.webp) ### Protection Circuit 101: Securing Your Electronics from Overcurrent and Short Circuits 5 Min Read](https://www.flux.ai/p/blog/protection-circuit-101-securing-your-electronics-from-overcurrent-and-short-circuits)[ ![Diagram of a simple circuit with an inductor and a flyback diode. The resistor represents the resistance of the inductor's windings.](https://www.flux.ai/p/assets/blogs/flyback-diodes/main.webp) ### Understanding the Flyback Diode: Your Essential Guide to Functionality and Why You Need One 3 Min Read](https://www.flux.ai/p/blog/understanding-the-flyback-diode-your-essential-guide-to-functionality-and-why-you-need-one)[ ![3D render of a zener diode with its electronic symbol and pinout which consists of anode and cathode](https://www.flux.ai/p/assets/blogs/what-is-zener-diode/main.webp) ### What Is a Zener Diode? How It Works and Where It’s Used 5 Min Read](https://www.flux.ai/p/blog/what-is-a-zener-diode-an-essential-breakdown)[ ![A cross-section through an nMOSFET when the gate voltage VGS is below the threshold for making a conductive channel; there is little or no conduction between the terminals drain and source; the switch is off. When the gate is more positive, it attracts electrons, inducing an n-type conductive channel in the substrate below the oxide (yellow), which allows electrons to flow between the n-doped terminals; the switch is on.](https://www.flux.ai/p/assets/blogs/mosfet-basics/main.webp) ### Understanding the Fundamentals: MOSFET Basics for Beginners 6 Min Read](https://www.flux.ai/p/blog/understanding-the-fundamentals-mosfet-basics-for-beginners)[ ![Typical schematic diagram of LM741, a classic operational amplifier](https://www.flux.ai/p/assets/blogs/lm741/main.webp) ### LM741 Pinout: A Deep Dive into a Classic Op Amp 4 Min Read](https://www.flux.ai/p/blog/lm741-pinout-a-deep-dive-into-a-classic-op-amp)[ ![An assortment of variable resistors displayed on a dark background with the text 'Variable Resistors' at the top and a circuit symbol for a variable resistor in the center](https://www.flux.ai/p/assets/blogs/6-types-of-variable-resistors/main.webp) ### 6 Types of Variable Resistors: a Detailed Look at Their Uses 6 Min Read](https://www.flux.ai/p/blog/6-types-of-variable-resistors-a-detailed-look-at-their-uses)[ ### Parallel and Series Resistor Calculator 3 Min Read](https://www.flux.ai/p/blog/parallel-and-series-resistor-calculator)[ ![A resistor showing its different color bands](https://www.flux.ai/p/assets/site-cms/643f890cd71a69ee18b71efa_resistor-color-code-calculator.png) ### Resistor Color Code Calculator 4 Min Read](https://www.flux.ai/p/blog/resistor-color-code-calculator)[ ![A comparison illustration of SMT and through-hole PCB assembly technologies](https://www.flux.ai/p/assets/blogs/smt-vs-through-hole/main.webp) ### SMT vs Through-Hole Technology: Which Should You Use? 8 Min Read](https://www.flux.ai/p/blog/smt-vs-through-hole)[ ![A person soldering a circuit board made with Flux](https://www.flux.ai/p/assets/blogs/flux-soldering/main.webp) ### How to Use Flux When Soldering Electronics 13 Min Read](https://www.flux.ai/p/blog/solder-flux-guide-for-soldering)[ ![Different types of toggle switches scattered and a big text - Toggle switch](https://www.flux.ai/p/assets/blogs/toggle-switch/main.webp) ### The Ultimate Guide to Toggle Switches: Types, Uses, and How They Work 3 Min Read](https://www.flux.ai/p/blog/the-ultimate-guide-to-toggle-switches-types-uses-and-how-they-work)[ ![A push button switch soldered on a rigid-flex printed circuit board](https://www.flux.ai/p/assets/blogs/push-button/main.webp) ### What Is the Science Behind Push Button Switches and How They Work 6 Min Read](https://www.flux.ai/p/blog/what-is-the-science-behind-push-button-switches-and-how-they-work)[ ![Tactile Switches: Wiring, Debouncing, and PCB Design](https://www.flux.ai/p/assets/blogs/tactile-switches-guide/main.webp) ### Tactile Switches: Wiring, Debouncing, and PCB Design 8 Min Read](https://www.flux.ai/p/blog/tactile-switches-guide)[ ![Close up of different types of electrical connectors, wire connectors, and solder connectors piled up.](https://www.flux.ai/p/assets/blogs/electrical-connectors/main.webp) ### Electrical Wire Connector Types and Uses 4 Min Read](https://www.flux.ai/p/blog/the-ultimate-guide-to-electrical-connectors-and-wiring-connection)[ ![An illustration of PCB debugging tools and techniques including multimeter, oscilloscope, and thermal imaging](https://www.flux.ai/p/assets/blogs/pcb-debugging-common-issues/main.webp) ### Why Your PCB Is Failing: Debugging Common Issues 7 Min Read](https://www.flux.ai/p/blog/pcb-debugging-common-issues)[ ![555 Timer Guide: Pinout, Operating Modes, and Circuit Examples](https://www.flux.ai/p/assets/blogs/555-timer/main.webp) ### 555 Timer Guide: Pinout, Operating Modes, and Circuit Examples 10 Min Read](https://www.flux.ai/p/blog/555-timer)[ ![Inverting Op-Amp Circuits: Formula, Gain, and Design Examples](https://www.flux.ai/p/assets/blogs/inverting-op-amp/main.webp) ### Inverting Op-Amp Circuits: Formula, Gain, and Design Examples 10 Min Read](https://www.flux.ai/p/blog/inverting-op-amp)[ ![How to Wire a Potentiometer: Pinout, Diagrams, and PCB Examples](https://www.flux.ai/p/assets/blogs/how-to-wire-a-potentiometer/main.webp) ### How to Wire a Potentiometer: Pinout, Diagrams, and PCB Examples 8 Min Read](https://www.flux.ai/p/blog/how-to-wire-a-potentiometer) See All (113) ## Let’s start building. Let’s build your idea together. All you need to do is describe what you want to make, or what problem you want to solve. Flux will work with you to make it a reality. [Try it Free](https://www.flux.ai/signup) ![Close-up of a Flux-designed printed circuit board](https://www.flux.ai/p/assets/homepage-v2/mission-visual.webp)