FPC Prototype in Humanized Way

Quick FPC, Rigid-flex PCB prototype and PCB Assembly

Flex PCB Blog
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What is FPC
Special attention points for flexible circuit wiring
Multilayer PCB Stack-up Basics | PCB Knowledge
PCB Protection: Potting or Conformal Coating? | PCB Knowledge
FPCway: Specialized manufacturer of flexible printed circuit boards and rigid-flexible printed circuits
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Control Impedance Between Rigid PCB and Flex PCB
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About RA Copper and ED Copper
Introduction of Flexible PCB
5 Tips For Designing Flexible PCB
Advantages of FPC (Flexible PCB)
Evolution of the Flex Printed Circuit Board
Benefits of Using Flex Circuit Boards
Why Rigid-Flex PCBs are Economical?
Flexible PCB vs Rigid PCB
Development of Flexible printed circuit board (FPC) market
Traditional Manufacture Engineering of FPC Substrate
Development Trend of FPC Board
Flex PCB and the Manufacturing
About Flex PCB design
About Flex PCB and Assembly
How to Ensure Flex PCB Design Success
How to Select the Appropriate FPC Materials?
The Differences In Rigid PCB, Flex PCB and Rigid-Flex PCB
Flex-Rigid PCB Design Guidelines
Beneficials for Polyimide Flex PCB Boards
About Stiffener on Flex PCB FPC circuit Boards
PCB Surface Finish Comparison
Copper Thickness for FPC Boards
Interconnect Solutions for Flexible Printed Circuits and Etched Foil Heaters
Advantages and Disadvantages of Rigid-Flex PCB
About FPC Plating Process
About EMI shield design for Flex Printed Circuit Board
PCB Assembly Blog
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About PCB Assembly
QFP and BGA and the Development Trend in PCB assembly
Why some components need be baked before reflow soldering
About Flex PCB Assembly
Manual Soldering in SMT Assembly Manufacturing Process
BGA Components and BGA Assembly
Quick Understanding for PCB Assembly Process
About SMT Assembly (Surface Mount Technology)
About THT Assembly (Through-Hole Technology)
About Reflow Soldering
PCB Assembly Inspections and Tests
Panel Requirements for PCB Assembly
About SMT (Surface Mount Technology)
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
Research on Layout Design Method of Ultra-thin FPC_3_Analysis of Layout Design Methods
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
Analysis of Vibration Characteristics of FPCBs _4_Summary
Analysis of Vibration Characteristics of FPCBs _3_Finite Element Analysis
Analysis of Vibration Characteristics of FPCBs _2_Theory of Vibration Analysis
Analysis of Vibration Characteristics of FPCBs Under Random Vibration_1_Introduction
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
Application of FPCB in PC motherboards
A Bus Planning Algorithm for FPC Design _4_Experimental result
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

Flexible circuits offer compact, low-mass packaging that can reduce space and weight by some 75%. While flexible circuits have been around for years, the clamor from medical-device manufacturers for smaller and lighter applications are bringing flexible circuits to the forefront as a viable way to meet the demands.

Limited knowledge of flexible circuitry means engineers are only just beginning to learn ways that flexible circuits can be used in their designs. Here are five tips for designing with flexible circuits.


1. Learn how flexible circuits work


Knowing the types of flexible circuits and their capabilities and applications, will provide guidelines for designing with them. Knowing what doesn't work can be just as important. When possible, contact a reputable flex-circuit manufacturer for guidance on material properties and limitations.


2. Build a flex circuit mock-up


The best way to determine the viability of a design is to create a physical flex circuit mock-up. This involves first determining the system points to be electrically connected via flex circuitry and a termination method such as mating connectors, pins, or ZIF. Next, determine an approximate circuit “footprint” that will provide conductor routing to each termination location. Review the schematic or net-list details along with special electrical requirements, such as plane layers, to determine an approximate layer count. Examine sample circuits of similar layer counts to see if the proposed design will provide sufficient flexibility. If no sample circuits are available, you might get free samples from a flex-circuit manufacturer.


Then review the mechanical requirements to ensure that bend radius fall within acceptable values for circuit thickness and layer count. Refer to IPC-2223 for guidelines on acceptable bend radii. Construct a “paper doll” outline of your flex circuit using heavy paper and use it to check for fit. Make modifications as necessary. Continue constructing paper prototypes and make modifications until the fit works. Lastly use 0.010-in. (0.25 mm) polyester film to reconstruct the prototype to make a representative mockup. Install it in a prototype housing and make dimensional adjustments as necessary.


3. Get a mechanical sample


Before investing a lot of time and money creating a functional flex-circuit prototype, test a mechanical sample to ensure the flex circuit has the right form and fit. Form refers to the physical size, shape, and mass of the part, while fit refers to its environmental interfaces. A mechanical sample helps avoid installation problems or latent mechanical issues that could cause failures.


4. Minimize circuit costs


The big cost drivers for flexible circuitry are the overall circuit size, number of layers, and feature size. Line widths and spaces, pad sizes and small hole sizes cost more. Follow recommended tolerances wherever possible and design unbonded areas only where they are absolutely necessary. If there are no SMT components, or they are on only one side, consider using a stiffened flex in lieu of a rigid flex. Stiffeners can be far less expensive than a rigid-flex circuit. And use standard materials whenever possible.


5. Don't ignore the minimum bend radius


Several problems arise when bending a circuit too sharply. Compression on the inside radius can cause wrinkles in the cover coat. Stretching on the outside bend can tear the cover material and break conductors. Start the mechanical design by establishing the bend radius. If the radius is at least ten times the material thickness, there is a good chance the circuit will function reliably. To improve reliability, reduce the overall thickness in the flex area so it withstands flexing.


Feel free to contact us for further enquiries for your flex PCB project.

Contact us

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  • Tel: 086 18576671093
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About us

  • Based in Shenzhen China, FPCway is professional at Flex PCB,
    Rigid-flex PCB and PCB assembly services
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