How to design a FPC board?

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FPC description:

FPC model:HQ050
FPC Name: 5050RGB LED STRIP BOARD
FPC features: Double layer board, double-sided film coating, whiteboard, black text, OSP antioxidant

I. Main Technical Parameters​
(1) Dimension Parameters​
The maximum size of precision FPC is 240mm × 500mm (with a limit of 250mm × 500mm), and there is no restriction on the minimum size. For roll material boards, the maximum width is 240mm and the maximum length can reach 100 meters. This size range can meet the production needs of various FPC products, including FPC LED strip boards. Since FPC LED strip boards need to adapt to different installation scenarios, they have high requirements for size flexibility, and the size characteristics of precision FPC make it well - suited for this.​
(2) Number of Layers of the Board​
Single - layer board: It has a simple structure with only one layer of copper foil and a single conductive path. It is applicable to fields with relatively simple circuits such as industrial control and electronic instruments. In some simple FPC LED strip boards, if the circuit design is simple, the single - layer board can also meet the basic conductive requirements.​
Double - layer board: Compared with single - layer FPC, the double - layer board contains two layers of copper foil. It forms complex conductive paths by adding vias, with higher circuit integration. It is widely used in products such as mobile phones and automotive instruments, and is also a common structure for FPC LED strip boards. Because FPC LED strip boards need to integrate multiple LED components and control circuits, double - layer boards can more efficiently realize circuit connection and signal transmission.​
(3) Solder Mask Color​
The solder mask colors of FPC mainly include yellow, black and white, each suitable for different scenarios:​
Yellow solder mask: It is applicable to most FPC products, such as various cable products. With strong versatility, it is widely used in conventional FPC and some simple FPC LED strip boards.​
Black solder mask: It is often used in high - end FPC products or those requiring light absorption, such as automotive electronics, mobile phone components and FPC LED strip boards. In display scenarios of FPC LED strip boards, the black solder mask can reduce light reflection interference and improve the display effect.​
White solder mask: It has an additional white coating compared with the yellow one, with good light - reflecting performance. It is suitable for FPC products that need light reflection, such as lighting fixtures, LED displays and medical beauty products. In FPC LED strip boards, if it is necessary to enhance the utilization rate of LED light, the white solder mask is an ideal choice.​
(4) Copper Foil Thickness​
The selection of copper foil thickness for different types of FPC is as follows:​
Precision FPC: For single - layer boards, 18μm (0.5oz) and 35μm (1oz) are optional; for double - layer boards, 12μm (0.33oz), 18μm (0.5oz) and 35μm (1oz) are available.​
Ordinary FPC: For single - layer boards, 18μm, 25μm, 35μm (1oz) and 50μm can be selected; for double - layer boards, 18 - 25μm, 25 - 25μm, 35 - 35μm and 35 - 70μm are optional.​
FPC LED strip boards often choose 18μm or 35μm copper foil to balance conductivity and flexibility. The 18μm copper foil is suitable for FPC LED strip boards with high flexibility requirements, while the 35μm copper foil has more advantages in high - current scenarios.​
(5) Copper Foil Thickness Specifications​
Precision FPC: Single - layer boards can choose 18μm (0.5oz) and 35μm (1oz); double - layer boards can select 12μm (0.33oz), 18μm (0.5oz) and 35μm (1oz).​
Ordinary FPC: Single - layer boards have options of 18μm, 25μm, 35μm (1oz) and 50μm; double - layer boards can be 18 - 25μm, 25 - 25μm, 35 - 35μm and 35 - 70μm.​
The selection of copper foil thickness for FPC LED strip boards should consider current load and flexibility requirements. For low - power FPC LED strip boards, 18μm copper foil can meet the needs; for high - power ones, 35μm and above copper foil can better ensure conductive stability.​
(6) Minimum Line Width/Spacing​
The smaller the line width and spacing, the greater the difficulty in FPC production and the higher the defect rate. It is generally recommended that the minimum line width/spacing should not be less than 3mil. This parameter is particularly critical for FPC LED strip boards. The precise control of line width and spacing in FPC LED strip boards directly affects their conductive performance and service life due to their dense circuits.​
II. Service Process​
(1) Consulting Services​
With 16 years of focus on the design, R & D and manufacturing of FPC and FPC LED strip boards, we can provide customers with personalized solutions, including optimization of design drawings, guidance on new product development and relevant technical support, helping customers solve technical problems in the application of FPC and FPC LED strip boards.​
(2) Quotation Services​
We provide quotations for samples or bulk orders of FPC and FPC LED strip boards with similar technologies and materials. Relying on advanced technology and optimized material selection, we achieve price advantages and greatly reduce costs for customers.​
(3) Professional Strength​
The company is equipped with advanced production equipment and technologies from Germany, Japan, Taiwan, China and other regions, realizing professional and large - scale production of FPC and FPC LED strip boards. The factory covers an area of nearly 20,000 square meters, with more than 800 employees and 50 senior technical backbones, providing a guarantee for the high - quality production of FPC and FPC LED strip boards.​
(4) Design Services​
We can provide customers with full - process solutions for FPC and FPC LED strip boards. Passing a number of international system certifications, we cover one - stop services such as substrate production, wiring design, principle design, mold development, patch, plug - in and steel mesh production. With 16 years of professional technical accumulation, we ensure reliable design support for FPC and FPC LED strip boards.​
(5) Prototyping Services​
We specialize in the prototyping and customization services of FPC and FPC LED strip boards, equipped with an expedited production line. For example, prototypes of FPC double - layer boards (including FPC LED strip board double - layer boards) can be completed within 5 - 7 days.​
Note: All pictures on this website are taken on site. Due to differences in light, shooting angle and display resolution, there may be visual color differences. As a professional circuit board manufacturer with 16 years of history in China, GongDong HongQi updates and upgrades products such as FPC and FPC LED strip boards every year, focusing on various FPC prototyping and customization services. If you have needs for FPC or FPC LED strip boards, you can inform us of specific requirements, and we will provide professional solutions and one - stop services including substrate production and wiring design. Welcome to consult online or contact us by email, and our professional sales team will provide you with one - on - one services.​

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