Flexible PCB
Flexible printed circuits board (Flexible PCB) is a kind of electronical conductors with conductive pathway printed on a bendable film that acts as an insulating (dielectric) base material and coated with a dielectric cover layer on the top. Depands on your interface requirements, the Flexible PCB can be developed using polyester or polyimide (Kapton) as the base material.
The structure can be rigid or flexible to reduce interconnection and incorporate tails directly into the circuit. Flexible PCB can be designed from simple single layer copper flex on polyester(single layer FPCB), to complex double sided on polyimide(double layer FPCB), and even intricate multi-layer composition.
High-quality flexible PCB and efficient OEM/ODM service
Elcom insists in providing high-quality and high-reliability flexible PCB to our clients. All flexible PCB products pass strict quality control processes. The customized flexible PCB/PCBA are available with our well-established and efficient OEM/ODM procedure. If you are interested in our flexible PCB products, please feel free to contact our service-oriented project managers!
- Single Sided Flexible PCB
Single layer Flexible PCB consisted of one conductive layer, suitable when space is limited.
- Double Sided Flexible PCB
Double layer Flexible PCB is make of two conductive layers with an insulating layer between. It is a ideal product when circuit density is required.
- Multi Layer Flex
The multi-layer flex is the FPC combines either single sided Flexible PCB and double sided Flexible PCB. It's a efficient solution when met the unavoidable crossovers.
| Maximum Size | 500 x 1000mm |
|---|---|
| Plating | Tin-Lead, Nickel and Gold |
| Minimum Spacing Between Circuits | 3 mil |
| Minimum Drill Size | 0.2mm |
| Minimum Annual Ring | 4 mil |
| Peel-Off Strength | 1.0N/mm |
| PTH Wall Copper Thickness | 0.025mm |
| Standard Line Width: 0.25mm, Minimum Line Width: 0.10mm | |
| Standard Trace Pitch: 0.5mm, Minimum Trace Pitch: 0.2mm | |
Thickness Tolerance of Flexible PCB:
| Single Sided | 0.013mm |
|---|---|
| Double Sided | 0.025mm |
| Rigid Flex | 0.050 to 0.178mm |
| Hole Dia. Tolerance(PTH) | ±0.05mm |
| Outline Tolerance | ±0.1mm |
Materials of Flexible PCB:
| Base Material and Thickness | Polyimide (0.025mm , 0.050mm) or Polyester (0.076mm, 0.127mm) |
|---|---|
| Conductor (Copper-RA or ED) | 1/3oz, 1/2oz, 1oz |
| Coverlay Layer and Thickness | Polyimide (0.025mm), Polyester (0.050mm) |
| Stiffener Material | FR-4, Mylar or Kapton |
Benefits of flex circuits board compared to traditional cabling and rigid boards include:
- Reduced wiring errors
- Elimination of mechanical connectors
- Unparalleled design flexibility
- Higher circuit density
- More robust operating temperature range
- Stronger signal quality
- Improved reliability and impedance control
- Size and weight reduction