Double-Sided Flexible Polyimide PCB with 0.22mm Flex Thickness,
Yellow Coverlay, and ENIG Finish
(All PCBs are custom-manufactured. Reference images and parameters
may vary based on your design requirements.)
Hi, I’m Sally from Bicheng Technologies Limited, and today I’m here
to introduce one of our high-quality PCB products: the Double-Sided Flexible Polyimide PCB. This PCB is designed for applications requiring flexibility,
durability, and precision, making it ideal for industries such as
automotive, computers, mobile devices, and office automation
equipment. Let me take you through the details of its construction,
features, and applications so you can better understand its
capabilities.
1. Overview of the Double-Sided Flexible Polyimide PCB
This double-sided flexible PCB is built using a flexible polyimide
base material and features a yellow coverlay solder mask on the top side. It’s engineered for applications
where flexibility and reliability are critical.
With a finished flex thickness of 0.22mm and 2oz copper weight on both outer layers, this PCB ensures excellent electrical
performance and mechanical stability.
The PCB also incorporates PI and FR4 stiffeners, which enhance structural integrity in specific areas where
additional support is required.
The combination of flexible polyimide and ENIG surface finish ensures high-quality solderability and corrosion resistance. This
design is compliant with IPC-Class-2 standards, and every board is
subjected to a 100% electrical test before shipment.
2. PCB Construction Details
| Parameter | Specification |
| Base Material | Flexible Polyimide |
| Layer Count | Double-sided |
| Board Dimensions | 51mm x 35mm ± 0.15mm |
| Minimum Trace/Space | 5/5 mils |
| Minimum Hole Size | 0.4mm |
| Flex Thickness | 0.22mm |
| Flex + PI Stiffener Thickness | 0.3mm |
| Flex + FR4 Stiffener Thickness | 1.34mm |
| Finished Copper Weight | 2oz (2.8 mils) outer layers |
| Via Plating Thickness | 20 μm |
| Surface Finish | Electroless Nickel Immersion Gold (ENIG) |
| Top Solder Mask | Yellow Coverlay |
| Bottom Solder Mask | No |
| Top Silkscreen | White |
| Bottom Silkscreen | No |
| Electrical Testing | 100% tested prior to shipment |
This PCB’s flexible design allows it to be folded, twisted, or bent
without compromising its electrical performance, making it suitable
for compact and dynamic devices.
3. Features and Applications
Key Features of the Flexible Polyimide Material
- Thermal Resistance: With a UL94 V-0 flammability rating, it
withstands high temperatures.
- Electrical Stability: Offers a dielectric constant of 3.31-3.34 and
a dissipation factor of 0.0188-0.0191 at 10 GHz.
- Flexibility: Retains its integrity even under mechanical stresses
like bending or twisting.
- Moisture Resistance: Maintains performance with a low absorption
rate of 1.37-1.46%.
- Chemical Resistance: Provides up to 85% resistance, ensuring
durability in harsh environments.
Applications
This flexible PCB is highly versatile and finds usage in a wide
range of industries, including:
- Computers: Ideal for compact circuit designs in laptops and
desktops.
- Mobile Devices: Used in smartphones and tablets for its lightweight
and flexible properties.
- Digital Cameras and VCRs: Ensures reliable performance in devices
requiring high precision.
- Automotive Electronics: Suitable for infotainment systems, sensors,
and control units.
- Office Automation Equipment: Perfect for printers, copiers, and
other automated systems.
By combining flexibility, stability, and performance, this PCB is a
strong choice for modern electronics that demand robust and
reliable circuit designs.
Why Choose Bicheng Technologies?
At Bicheng Technologies Limited, we understand the importance of
delivering high-quality PCBs that meet your specific needs. Our
Double-Sided Flexible Polyimide PCB is manufactured with precision
and care, ensuring electrical reliability, mechanical durability,
and cost-efficiency.
If you have any technical questions or want more information, feel
free to reach out to me at sales30@bichengpcb.com. I’ll be happy to assist you in finding the perfect PCB solution
for your project.
Thank you for choosing Bicheng Technologies Limited!
