Types of Flexible PCB
Sienta specializes in manufacturing high-precision flexible PCBs in 1-10 layers for quick-turn prototypes and mass production. ISO 9001:2008, UL, ISO 14001, ROHS, and TS16949 approval demonstrate our commitment to quality control.
Flexible PCB Fabrication Capabilities
| PROCESS | ITEM | UNIT | CAPABILITY | ||
| Limit Tolerance | Normal tolerance | Remark | |||
| Board cutting & thickness | Layer | / | 1-10 layer | 1-10 layer | |
| cutting size: 250mm | mm | 250*1000mm | 250*500mm | ||
| Min. thickness | mm | 0.075mm | 0.10mm | ||
| Other auxiliary material | Adhesive stiffener | um | PSA:50um | PSA:50um | |
| hot setting adhesive | um | 12.5/25/40um | 12.5/25/40um | ||
| PI stiffener | um | PI: 1.0-13mil | PI: 1.0-13mil | ||
| Other stiffener type | / | steel, Al, silicon steel sheet | |||
| Drilling | Min. drilling hole size | mm | 0.1 | 0.2 | |
| hole diameter tolerance | mm | ±0.075 | ±0.1 | ||
| PTH | hole wall copper thickness | um | 8/15/25 | 8/15/25 | |
| Exposure | Min line width/space | mm | 0.05/0.05 | 0.075/0.075 | |
| hole ring | mm | 0.125 | 0.2 | ||
| offset tolerance | mm | 0.1 | 0.15 | ||
| Line width tolerance | mm | ±0.03 | ±0.04 | ||
| Distance between hole edge to outline | mm | ≥0.4 | ≥0.5 | ||
| Lamination | Cover-layer tolerance | mm | 0.15 | 0.2 | |
| PI stiffener with outline | mm | ±0.3 | ±0.3 | ||
| Sensitive PSA | mm | ±0.3 | ±0.3 | ||
| FR4 location tolerance | mm | ±0.3 | ±0.3 | ||
| Ink | Soler mask thickness | um | 8 | 15 | |
| Silk screen thickness | um | 8 | 15 | ||
| Profile | R angle for etching cutting die | mm | 0.5 | 0.5 | |
| Steel die tol. | mm | LS: ±0.075 | LS: ±0.075 | ||
| mm | HS: ±0.01 | HS: ±0.01 | |||
| Cutting die tol. | mm | Etching: ± 0.20 | Etching: ± 0.30 | ||
| mm | Wooden: ± 0.30 | Wooden: ± 0.50 | |||
| Laser tol. | mm | ± 0.05 | ± 0.05 | ||
| Offset tol. for fingers | mm | ± 0.10 | ± 0.10 | ||
| Surface treatment | Immersion gold | um | Ni: 2.0~5.0 | Ni: 2.0~5.0 | |
| Au: 0.03~0.08 | Au: 0.03~0.08 | ||||
| Plating tin | um | 8~20 | 8~20 | ||
Benefits Of Flexible Circuit Boards
-
High-density wiring
FPC can accommodate more wiring in a small space, making it ideal for high-density applications.
-
Lightweight and Thin
FPC is made from flexible materials such as polyimide or polyester film, making it lightweight, compact, and thin, which is suitable for applications that require a lightweight and thin design.
-
Flexible and foldable
FPC can be bent, folded, and rotated without damaging the circuit, making it adaptable to different shapes and spatial layout requirements.
-
Three-dimensional assembly
FPC has excellent spatial layout capabilities and can achieve three-dimensional assembly, integrating component assembly and wire connection.
-
High reliability
Because FPC uses flexible base materials, it has strong resistance to shock, vibration, and stress cracking, which enhances the reliability of the circuit board.
-
Low production cost
Compared with rigid circuit boards, FPC has lower production costs, is more flexible, and can be manufactured with automated processes, which improves production efficiency.
-
Q What is your MOQ(Minimum Order Quantity)?
We have no MOQ limited.Sample and mass production all can support.
-
Q What is needed for quotation?
FPC&rigid-flex PCB&PCB:Quantity, Gerber file and Technical requirements(material,surface finish treatment, copper thickness,board thickness ,...)
PCBA:PCB information, BOM list -
Q Can you manufacture my PCB from a picture?
No, we cannot accept BMP, GIF, TIFF, or JPG pictures as the manufacturing file.If you do not have gerber file, you can send us sample to copy it.
-
Q Are my files safe?
We ensure complete safety and security of your files and protect our customers' intellectual property throughout the entire process. Any documents provided by our customers are kept strictly confidential and are never shared with any third parties.
-
Q How long will it take to receive my quotation?
We will respond your quotation within 24 hours to the quotation requests.
-
Q How can I pay?
We accept payments by PayPal, cash, bank transfer (T/T),WU,Alipay. If need other payment method please contact us (sienta@sienta.com.cn).
-
Q What's your transport method?
We use UPS, FedEx, or DHL to ship the boards. If you have your own freight forwarding company, we can also work with them.
-
Q Do you offer free sample?
We can offer samples, but you must pay for them first. If you go ahead with mass production later on, the cost of the samples will be deducted.We look forward to establishing a long-term business relationship with you!
-
Q What is your standard lead time?
As FPC&PCB belong to customized products,generally it is 3-7 days for samples and 10-20 days for mass products.The actual delivery date according to difficulty of the products, the quantity and etc.Please contact us to get different product lead time.
-
Q How do you control the product quality?
We adhere to strict quality control standards set by ISO 9001, ISO 14001, IATF 16949, and SGS. All boards undergo 100% testing and we offer a range of inspection options including visual, X-ray, AOI, and ICT/FCT.
-
Q How many layer can you produce for flexible PCB?
For FPC, we can produce from 1 layer to 8 layers.
-
Q How many layer can you produce for Rigid flexible PCB?
For Rigid flexible PCB board, we can produce from 2 layer to 8 layers.
-
Q Which surface treatment can you produce for FPC, PCB and rigid flexi PCB?
We can produce Immersion gold, immersion silver, OSP, hot air Levelling(L/F), Gold plating,ENIPIG, Immersion tin and etc.
