Flexible Circuits With FR-4 Stiffener 1-layer Printed Circuit Board

Flexible Circuits With FR-4 Stiffener 1-layer Printed Circuit Board

Introduction:

Flexible Circuits, also known as flex circuits or flexible printed circuit boards, are a breakthrough in circuit board technology. Unlike traditional rigid PCBs, these innovative circuits offer unparalleled flexibility in design and application. Made from flexible materials such aspolyimide orpolyester, they can bend, twist, and conform to fit any desired shape or space requirements. The combination of flexibility and functionality makes them ideal for a wide range of industries and applications.

Purpose of Flexible Circuits:

Flexible circuits serve multiple purposes, including:

1.Interconnections: They provide reliable interconnections between printed circuit boards and other components, enabling seamless communication and data transfer.

2.Three-dimensional substrates: They serve as three-dimensional substrates for mounting Surface Mount Technology (SMT) components, making them suitable for applications in photographic and video cameras, where space is limited.

3.Dynamic flexing: Flexible circuits are designed to withstand dynamic flexing, making them suitable for applications that require frequent bending, such as wearable devices or robotics.

4.Flex/rigid circuit boards: They can be incorporated into flex/rigid circuit boards, combining the advantages of both flexible and rigid PCBs to meet specific design requirements.

Basic Types of Flexible Circuits:

There are four basic types of flexible circuits:

1)Single-Sided Flexible Circuits: 

This type consists of a thin and flexible base material with a copper foil laminated to it using adhesive. A covercoat is often added to the copper side for protection.

2)Double-Sided Flexible Circuits:

These circuits have a thin and flexible base material with copper foil laminated on both sides. Covercoats are applied to the outer sides for added durability.

3)Multilayer Flexible Circuits:

Multilayer flexible circuits comprise multiple thin and flexible base laminates with copper foils laminated together using adhesive. Covercoats are bonded to the outer sides.

4)Flexible Circuits with Rigid Areas:

In cases where heavy components or connectors need support, a stiffener is bonded to the flexible circuit. The stiffener can be an additional layer of polyimide or a glass/epoxy laminate.

SF201 Series Polyimide:

Our Flexible Circuits with FR-4 Stiffener are based on Shengyi's SF201 series materials. These adhesiveless flexible copper clad laminates are made from polyimide substrates. With a dielectric constant of less than 3.7 and a dissipation factor of less than 0.01 at 10 GHz, these flexible materials provide excellent electrical performance. They are available in thicknesses of 12.5um, 20um, and 25um, with copper options of 12um, 18um, 35um, and 70um.

Features:

1-layer Flexible Circuits With FR-4 Stiffener offer a range of features that make them a reliable choice for various applications:

1.Excellent soldering reliability, dimensional stability, and chemical resistance ensure long-lasting performance and durability.

2.Outstanding flexibility and electrical properties allow them to adapt to different shapes and configurations while maintaining optimal functionality.

3.Halogen-free and UL94 V-0 flammability rating ensure compliance with safety standards and provide peace of mind.

4.Compatibility with the EU RoHS directive guarantees that our circuits are free from harmful substances such as lead, mercury, cadmium, and certain flame retardants.

FPC Stackup:  1-layer flexible PCB

Coverlayer (Solder mask)

Copper_layer_1 - 35 m

Polyimide - 0.025 mm (1mil)

Adhesive

PI stiffener - 1mil

PCB Construction Details:

The Flexible Circuits With FR-4 Stiffener have the following construction details:

PCB Statistics:

Our Flexible Circuits With FR-4 Stiffener have the following statistics:

Some Typical Applications:

The Flexible Circuits With FR-4 Stiffener are suitable for a wide range of applications, including:

1)Computers:

These flexible circuits can be used in laptops, tablets, and desktop computers to provide interconnections between various components and enable flexible form factors.

2)Mobile Phones:

The slim and flexible nature of these circuits makes them ideal for mobile phones, where space is limited. They can be used for interconnecting components and enabling bending or folding designs.

3)Digital Cameras and VCRs:

Flexible circuits are commonly used in digital cameras and video cassette recorders for their ability to withstand dynamic flexing and provide reliable interconnections.

4)Flat Panel Displays:

Flexible circuits are essential components in flat panel displays, enabling the transmission of signals and power to the display pixels while maintaining flexibility.

4)Apparatus and Instruments:

These circuits can be found in various apparatus and instruments, such as medical devices, test equipment, and industrial control systems, where flexibility and reliability are crucial.

5)Automotive Electronics:

Flexible circuits are increasingly used in automotive applications, including infotainment systems, instrument clusters, and advanced driver-assistance systems (ADAS), due to their ability to withstand vibration and fit into tight spaces.

Conclusion:

The Flexible Circuits With FR-4 Stiffener provide a flexible, reliable, and high-quality solution for a wide range of applications. With their innovative design and exceptional performance characteristics, these circuits offer unparalleled flexibility, excellent electrical properties, and reliable interconnections. They are constructed using Shengyi's SF201 series materials, ensuring superior soldering reliability, dimensional stability, and chemical resistance.

The PCB construction details showcase precision and attention to detail, from the board dimensions and minimum trace/space requirements to the surface finish and silkscreen options. Additionally, the 100% electrical test conducted prior to shipment guarantees the functionality and reliability of each circuit.

Whether you are designing cutting-edge consumer electronics, automotive systems, or industrial equipment, our Flexible Circuits With FR-4 Stiffener are the ideal choice for your flexible PCB needs. Trust in our high-quality materials, advanced manufacturing processes, and commitment to delivering reliable and innovative solutions. Experience the flexibility and performance of our flexible circuits and unlock new possibilities for your designs.