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.

Company Profile

Founded in 2003, Shenzhen Bicheng Electronics Technology Co., Ltd is an established high frequency PCB supplier and exporter in Shenzhen China, severing cellular base station antenna, satellite, high frequency passive components, microstrip line and band line circuit, millimeter wave equipment, radar systems, digital radio frequency antenna and other fields worldwide for 18 years. Our high frequency PCBs are mainly built on 3 high frequency material brands: Rogers Corporation, Taconic and Wangling. Dielectric constant ranges from 2.2 to 10.2 etc.

Bicheng PCB is headquartered in Shenzhen, a city with great economic vitality. Based in China, we adhere to the philosophy of servicing small and medium sized companies offering variety of circuit boards to meet the demands of market.

Main Business & PCB Applications

We maintain the highest standards which support products that exhibit exceptional quality, performance and reliability. We also have divisions of FR-4 circuit board, flexible circuits and metal core PCBs featured as prototypes, small runs to mass production. We actively research and build such high value added PCB projects as HDI, quick turn, impedance control, heavy copper and backplane board etc. This has made our PCB products generate an effective prolongation and complementation, as well as formation of integrated products line ranging from low-end to high-end.The circuit boards are used in the industries of home appliances, portable and consumable electronics, medical filed, aerospace as well as telecommunications etc.

Main Material Partners