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Evolution of the Flex Printed Circuit Board
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Development of Flexible printed circuit board (FPC) market
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About Stiffener on Flex PCB FPC circuit Boards
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Copper Thickness for FPC Boards
Interconnect Solutions for Flexible Printed Circuits and Etched Foil Heaters
Advantages and Disadvantages of Rigid-Flex PCB
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PCB Assembly Blog
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FPC Research Blog
Preparation of FPC based on ultrasonic spraying method_4_Experimental Results
Preparation of FPC based on ultrasonic spraying method_3_Experimental Procedure
Preparation of FPC based on ultrasonic spraying method_2_Experimental Platform and Principle
Preparation of FPC based on ultrasonic spraying method_1_abstract
Research on Layout Design Method of Ultra-thin FPC_4_Analysis of Layout Design Methods
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Research on Layout Design Method of Ultra-thin FPC_2_Analysis of Layout Design Methods
Research on Layout Design Method of Ultra-thin FPC_1_introduction
Research progress on polyimide FPC_2_the field of FPC
Research progress on polyimide FPC_1_Introduction
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Analysis of Vibration Characteristics of FPCBs _3_Finite Element Analysis
Analysis of Vibration Characteristics of FPCBs _2_Theory of Vibration Analysis
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Design Methods for FPCBs_5_Practical Application
Design Methods for FPCBs_4_Electrical Circuit Design and Examples
Design Methods for FPCBs_3_Structure Design Method and Examples
Design Methods for FPCBs_2_Component Selection Methodology and Examples.
Research on Design Methods for FPCBs
Application of MPW technique for FPCBs _4_Summary
Application of MPW technique for FPCBs_3_Experimental results
Application of MPW technique for FPCBs_2_Experimental setup
Application of MPW technique for FPCBs_1_Principle of MPW
Application of FPCB in PC motherboards_4_ Results and discussion
Application of FPCB in PC motherboards_3_ Numerical analysis
Application of FPCB in PC_2_ Experimentation
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A Bus Planning Algorithm for FPC Design _3_Proposed Algorithm
A Bus Planning Algorithm for FPC Design _2_Preliminaries
A Bus Planning Algorithm for FPC Design _1_Introduction

A majority of our daily existence is intertwined with a wide range of electronic devices including cell phones, medical devices, wearables, computers, servers and many more, regardless of their sizes, shapes, and uses. While most devices are flexible, efficient, and lightweight, have also have another thing in common—each includes at least one flexible printed circuit board. There are several advantages of using flexible circuit boards over the usual rigid types. These are listed below in order of their importance.


High Flexibility


As the name suggests, the most prominent benefit flex circuit boards offer is flexibility. The elastic nature of flex circuits allows them to be packaged, folded, and positioned around folds and edges. That means flex circuits especially are helpful in electronic devices that require connections in all the three axes. It also implies flex circuits can almost replace all wiring, eliminating failure of wired connections, thereby increasing the reliability of the device.


Weight and Space Savings


Typically, flex circuit boards take up only 10% of the weight and space of wires within a device. Being thin and lightweight, use of flex circuits allow a substantial decrease in the dimensions and weight of devices—to the extent of 60% compared to that used up by rigid PCBs or wire harnesses.


Bending Cycles


Flexible circuit boards are made with polyimide as the standard base material, capable of as many as 200,000 bending cycles. Again, this eliminates connectors and wiring harness failures in equipment with moving parts, such as printers, medical devices, and advanced cell phones.


Reliability and Durability


Being flexible and lightweight, flex circuits can absorb and reduce effects of shock and vibration to itself and related solder joint connections. This helps improve the performance and reliability of the device.


Flex circuits can dissipate heat at much better rates than do other dielectric materials typically used for rigid PCBs, while still offering the benefits of flexibility.


Apart from polyimide, flex circuits can be made from materials with properties such as water resistant, moisture resistant, shock resistant, high-temperature resistant, and oil and corrosion resistant. That enables the use of flex circuits in harsh operating environments—offering excellent UV exposure and radiation resistance.


Materials used for flexible circuits show exceptional thermal stability. Medical and military equipment make substantial use of this feature of the flex circuits in applications requiring high reliability.




Designers can reduce the packaging and material costs of the finished assembly, because the thin and flexible polyimide film requires a far smaller area. This also is reflected in the final assembled product, as it lower costs for the PCB assembly. For instance, flex circuits eliminate wire routing errors, which offers benefits such as reduction of test and rework times, and rejects.


Design Benefits


Depending on the application, designers use four varieties of flex circuits, as specified by IPC 6013:



All of them offer benefits of reliable 3-D circuitry applications along with providing a stable platform for components, stiffeners, flex PCB pins, heat streaks, and more. Designers prefer to use flex circuits because they offer improvements in impedance control, noise reduction, signal integrity, and reliability.


Flex circuits offer designers improvements in design freedom, as they reduce the device weight and mechanical space. For instance, the rigid-flex PCB, with HDI micro-vias, offers an inexpensive alternative to multilayer flexible printed circuit boards.

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