{"id":1339,"date":"2026-02-26T16:41:58","date_gmt":"2026-02-26T08:41:58","guid":{"rendered":"https:\/\/jkrglo.com\/?page_id=1339"},"modified":"2026-04-15T17:13:58","modified_gmt":"2026-04-15T09:13:58","slug":"flexible-pcb","status":"publish","type":"page","link":"https:\/\/jkrglo.com\/es\/flexible-pcb\/","title":{"rendered":"Circuito impreso flexible"},"content":{"rendered":"
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Circuito impreso flexible<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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INICIO<\/a><\/span><\/span><\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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What is a Flexible PCB?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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A Flexible PCB (also called flex PCB or FPC) is a type of printed circuit board that can bend, fold, and twist without breaking. Unlike rigid boards, flexible PCBs are designed to adapt to tight spaces and dynamic environments, making them ideal for compact and lightweight electronic devices.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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How Flexible PCBs Differ from Rigid PCBs<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Rigid PCBs are built on FR4 substrates, which makes them stiff and less adaptable to tight spaces. Flexible PCBs, in contrast, use polyimide substrates that allow the board to bend and twist without damage. Conductive copper layers carry signals across the base material, while protective coverlays or conformal coatings ensure durability. Thanks to this flexibility, FPCs save space, withstand vibration better, and enable 3D packaging solutions that rigid boards simply cannot achieve.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Structure and Properties of FR4<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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The structure of a Flexible PCB is built on thin, bendable substrates such as polyimide (PI) or PET, which provide excellent mechanical flexibility and heat resistance. Copper foil is laminated onto the substrate to form the conductive traces, while coverlays or solder masks protect the circuits. Depending on the application, stiffeners can be added in certain areas to strengthen connectors or mounting points without affecting the overall flexibility.<\/p>

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Flexible PCBs combine mechanical adaptability with electrical reliability. They can be bent, folded, or twisted to fit into compact or irregularly shaped devices, all while maintaining stable electrical performance.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Key properties include:<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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High Flexibilit<\/span>y<\/span>\u00a0–<\/strong> withstands repeated bending without damage.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Lightweight and Thin<\/span>\u00a0–<\/strong> saves space and reduces overall device weight.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Durability<\/span>\u00a0–<\/strong> resistant to vibration, thermal stress, and dynamic movement.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Design Versatility<\/span>\u00a0–<\/strong> supports complex layouts with fewer connectors and cables.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Advantages of Flexible PCBs<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Space and Weight Savings<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Flexible PCBs are very thin and lightweight. They reduce the need for bulky wires in a system where space is a constraint. And because of this flexibility, we can design compact devices.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Durability and Flexibility in Harsh Environments<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Flexible PCBs come with superior bend endurance. They enhance the overall bending ratio and bending frequency. Due to their good thermal stability, FPCs perform well in applications exposed to mechanical stress and vibrations.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Improved Signal Integrity<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Thickness is reduced, which means less spacing between layers and shorter ground return paths. This will reduce the overall crosstalk and improve signal integrity in high-speed designs.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Benefits of FR4 PCB Material<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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1. Bend Radius and Layer Count <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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The minimum bend radius defines how tightly a flexible PCB can be bent without causing cracks or delamination. This parameter depends on both the layer count and material type. In general, more layers reduce flexibility, so designs requiring frequent bending should minimize layer count.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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2. Material Selection <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Polyimide (PI) is the most commonly used material thanks to its excellent thermal resistance and mechanical durability. Its ability to withstand high temperatures makes soldering components reliable and secure.<\/p>

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Polyester (PET) is a cost-effective alternative, suitable for low-cost or disposable devices. However, it has limited heat resistance and is not ideal for applications requiring repeated soldering.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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3. Trace Routing and Pad Design <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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To ensure mechanical reliability, designers often use curved traces, staggered vias, and teardrop pads. These techniques help reduce stress concentration points, preventing cracks and enhancing long-term durability.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Common Applications of FR4 PCBs<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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1. Consumer Electronics <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Flexible PCBs are widely used in smartphones, wearables, and laptops to save space and enable ultra-slim designs. By allowing components to connect within tighter spaces, FPCs make compact and lightweight devices possible.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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2. Medical Devices <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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In medical technology, weight and reliability are critical. FPCs are commonly used in pacemakers, hearing aids, and diagnostic equipment. Their ability to bend and flex allows them to withstand natural body movements without compromising performance.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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3. Automotive Electronics <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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From electric vehicles to in-car audio systems, FPCs play a vital role. Unlike rigid boards that are prone to vibration damage, flexible PCBs can endure both heat and mechanical stress, making them ideal for sensors and control systems.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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4. Aerospace and Aviation <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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In aerospace and aviation, reducing weight is critical. FPCs are used in satellites, avionics, and other flight systems because their lightweight design helps lower launch costs and improve fuel efficiency without sacrificing reliability.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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JKRGLO Flexible PCB Manufacturing Capabilities<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Flexible PCB Manufacturing Capabilities <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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\n Features <\/td>\n \n Capabilities <\/td>\n <\/tr>\n
\n Minimum Dimensions <\/td>\n \n No limit. Panel suggested if dimension \uff1c 20\u00d720mm. <\/td>\n <\/tr>\n
\n Maximum Dimensions <\/td>\n \n Regular: 234 \u00d7 490mm <\/td>\n <\/tr>\n
\n Absolute limit: 250 \u00d7 600mm with edge rails <\/td>\n <\/tr>\n
\n Dimension Tolerance <\/td>\n \n \u00b10.1mm\/\u00b10.05mm(extra charged) <\/td>\n <\/tr>\n
\n Coverlay Color <\/td>\n \n Yellow \/ Black \/ White\/ Transparant <\/td>\n <\/tr>\n
\n Acabado superficial <\/td>\n \n ENIG. Thickness: 1u\" \/ 2u\" <\/td>\n <\/tr>\n
\n Min. Via hole size\/diameter <\/td>\n \n \u2460Regular: 0.15mm\/0.35mm <\/td>\n <\/tr>\n
\n \u2461Extreme: 0.10mm\/0.3mm (extra charged) <\/td>\n <\/tr>\n
\n Minimum Plated Slot <\/td>\n \n 0.50 mm <\/td>\n <\/tr>\n
\n Minimum Non-Plated Slot <\/td>\n \n No limit <\/td>\n <\/tr>\n
\n Annular Ring for PTH <\/td>\n \n \u2265 0.25 mm. Absolute limit: 0.18mm <\/td>\n <\/tr>\n
\n Minimum Trace Width\/Spacing <\/td>\n \n \u2460 12\u03bcm (1\/3oz) copper: 3\/3mil (absolute limit 2\/2mil) <\/td>\n <\/tr>\n
\n \u2461 18\u03bcm (0.5oz) copper: 3.5\/3.5mil <\/td>\n <\/tr>\n
\n \u2462 35\u03bcm (1oz) copper: 4\/4mil <\/td>\n <\/tr>\n
\n Stiffener Material <\/td>\n \n PI(0.1mm, 0.15mm, 0.20mm, 0.225mm, 0.25mm) <\/td>\n <\/tr>\n
\n FR4(0.1mm, 0.2mm, 0.4mm, 0.6mm, 0.8mm, 1.0mm, 1.2mm, 1.6mm) <\/td>\n <\/tr>\n
\n Stainless Steel(0.1mm, 0.2mm, 0.3mm) <\/td>\n <\/tr>\n
\n 3M Tape(tesa8854, 3M9077, 3M468) <\/td>\n <\/tr>\n <\/table>\n<\/div>