Polyimide PCB 25um FPC 2-layer 0.24mm Thick Immersion Gold

We are excited to introduce our newly shipped SF305 Halogen-Free Flame-Resistant Flexible PCB, a high-performance solution designed for advanced flexible electronic applications. Developed using Shengyi Technology’s SF305 adhesive double-sided flexible copper-clad laminate (FCCL), this PCB is engineered to meet the demanding requirements of high-frequency signal transmission and dynamic bending scenarios. Ideal for industries such as foldable mobile phones, wearable devices, automotive electronics, and medical devices, this PCB combines cutting-edge technology with exceptional reliability and performance.

Why Choose the SF305 Flexible PCB?
 

1. Unmatched High-Frequency Performance:
With a dielectric constant (Dk) of 3.3 and a dissipation factor (Df) of 0.0019 at 10GHz, this PCB ensures minimal signal loss, making it perfect for high-frequency and millimeter-wave applications.

2. Exceptional Flexibility and Durability:
Designed to withstand repeated bending, the SF305 PCB boasts a peel strength of ≥1N/mm and outperforms industry standards in dynamic bending tests. It’s the ideal choice for foldable and wearable devices that demand long-term reliability.

3. Built to Survive Harsh Conditions:
Rigorously tested for high-temperature and high-humidity environments (double 85) and thermal shock resistance (-40°C to 125°C), this PCB is engineered to thrive in the most demanding settings. Its moisture absorption rate of ≤1.5% and chemical resistance of ≥80% further enhance its durability.

4. Eco-Friendly and Safe:
Compliant with UL94 V-0 flammability standards, the SF305 PCB is halogen-free, making it an environmentally friendly choice for modern electronics.

5. Cost-Effective
Offering a superior cost-performance ratio compared to imported alternatives like DuPont Pyralux AP.

PCB Stackup and Construction Details
The SF305 Flexible PCB is a 2-layer flexible PCB designed for high reliability and performance. Here are the key construction details:

Copper Layers: 35 μm (both layers)

Adhesive Thickness: 20 μm (top and bottom)

Core Material: SF305 Polyimide (25 μm)

Board Thickness: 0.24 mm

Surface Finish: Electroless Nickel Immersion Gold (ENIG)

Solder Mask: Yellow (top and bottom)

Silkscreen: White (top only)

Via Plating Thickness: 20 μm

Minimum Trace/Space: 14/16 mils

Minimum Hole Size: 0.5 mm

Electrical Testing: 100% tested prior to shipment

The board dimensions are 75 mm x 62 mm, with a tolerance of ±0.15 mm, ensuring a compact and accurate fit for your applications.

The artwork is supplied in Gerber RS-274-X format, ensuring compatibility with standard PCB design tools.

Manufactured to IPC-Class-2 quality standards, this PCB guarantees reliability and durability. Additionally, it is available for worldwide shipping, making it accessible for global projects.

Applications
The SF305 Flexible PCB is a versatile solution for a wide range of industries, including:

Consumer Electronics: Foldable smartphones, wearable devices, digital cameras, and VCRs.

Automotive Systems: Advanced driver-assistance systems (ADAS), sensors, and control modules.

Industrial Equipment: Office automation devices, robotics, and control systems.

Medical Devices: Flexible circuits for diagnostic and monitoring equipment.

Get in Touch
If you’re looking for a flexible PCB that combines cutting-edge technology with unmatched reliability, the SF305 Halogen-Free Flame-Resistant Flexible PCB is the perfect choice. Our team is here to provide production service and fast delivery to meet your project needs.