Thick copper FPC is a type of circuit board made of flexible copper-clad board as the substrate, characterized by an increase in the thickness of the conductive layer copper foil compared to traditional FPC. This increased copper foil thickness is usually designed to meet specific electrical performance requirements, such as withstanding higher current densities and providing better heat dissipation performance. The structure of thick copper FPC is similar to traditional FPC, including insulation film, conductive layer (copper foil), adhesive and other components.

High current carrying capacity: Due to the thick copper foil layer, thick copper FPCs can withstand higher current densities, making them suitable for applications that require high current transmission.
Good heat dissipation performance: A thicker copper foil layer facilitates rapid heat conduction and dissipation, thereby improving the heat dissipation performance of the circuit board.
Enhanced mechanical strength: The thick copper foil layer increases the overall mechanical strength of the circuit board, making it more durable and reliable.
Adapting to complex environments: Thick copper FPC still maintains the bendable and foldable characteristics of flexible circuit boards, and can adapt to various complex shapes and spatial layout requirements.

The manufacturing process of thick copper FPC is relatively complex and requires improvement and optimization on the basis of traditional FPC manufacturing process. The main process steps include:
Substrate preparation: Select suitable flexible copper-clad laminates as substrates to ensure excellent electrical performance and mechanical strength.
Copper foil processing: Thick copper foil layers are produced using methods such as electrodeposition or plating to meet specific electrical performance requirements.
Circuit fabrication: Creating circuit patterns on copper foil through processes such as photolithography and etching.
Layering and bonding: laminating and bonding components such as insulation films and copper foil layers to form a complete circuit board structure.
Surface treatment: Surface treatment of circuit boards, such as immersion gold, gold plating, etc., to improve their solderability and corrosion resistance.
Testing and Inspection: Conduct circuit connectivity and functional testing to ensure product quality meets standards.

Thick copper FPC is widely used in various fields due to its unique performance and advantages:
Automotive electronics: used for connecting components such as car displays, sensors, controllers, etc., to meet the complex working environment and high reliability requirements inside automobiles. Meanwhile, thick copper FPC can withstand high current density and provide good heat dissipation performance, making it suitable for high current transmission and heat dissipation requirements in automotive electronic systems.
Medical equipment: Thick copper FPC is often used in the signal transmission part, control module, etc. of medical equipment. Its flexible characteristics make the device more compact and lightweight, while the thick copper layer provides stable electrical performance and mechanical strength.
Aerospace: In the navigation and control circuit of aircraft or drones, thick copper FPC can provide stable and reliable electrical performance, and maintain its reliability in harsh environments.
Industrial control: Thick copper FPC also plays an important role in applications that require high-density integration and high reliability connections, such as industrial control equipment and measuring instruments.

If pursuing cost-effective FPC manufacturing services, choosing a Chinese manufacturer is the best choice. As a manufacturing powerhouse, China has abundant resources, cheap labor, and a large number of technical personnel. We recommend Haibo, a Chinese FPC assembly service provider with over 10 years of experience, who has performed outstandingly in various aspects

Efficient and reasonable quotation:There is an efficient quotation process to assist you in making decisions, providing reasonable prices and highly competitive quotes in China.
High quality and reliable products:Produce high standard printed circuit boards, manufacture and test according to specifications, international standards, and internal controls, and conduct pre production inspections to ensure robust processes.
Quick and on-time delivery:The assembly equipment is in good condition, with high productivity, minimal downtime, short delivery time, and also provides urgent services.
Timely and effective response:Always respond to customer needs, provide accurate information, answer questions through multiple channels, and offer one-stop services.
Strong technical strength:China's FPC manufacturing technology is leading, and Haibo has a complete SMT solution that covers assembly, inspection, and other capabilities. It also provides prototype production and customization services.